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Heat Pumps & Hybrid HVAC Systems in Industrial Settings

Inergy Guest — Thu, 25 Jun 2026 12:21:36 +0000

Heat pumps are no longer just a residential solution – they’re increasingly used in industrial and commercial buildings across the UK. Combined with hybrid systems, which integrate existing boilers or chillers, they offer a flexible, energy-efficient approach to heating and cooling large facilities.

For facility managers, understanding how these systems work, their benefits, and implementation strategies is essential to reduce energy costs, comply with regulations, and support ESG goals.

Ready to explore industrial heat pump solutions? Contact us today.

Why Heat Pumps Matter for Industrial Facilities

Heat pumps can deliver up to 25–30% energy savings compared to traditional systems.
Low-carbon heating solutions help facilities meet Net Zero 2050 goals.
Supports ESG reporting by lowering Scope 1 emissions.
Modern industrial heat pumps can reach higher temperatures suitable for industries like manufacturing and warehousing, as well as other large-scale commercial facilities.

Hybrid HVAC Systems: Balancing Efficiency and Reliability

Hybrid systems combine heat pumps with existing boilers, chillers, or other HVAC equipment.

This:

For example, a warehouse retrofit using a hybrid system replaced 60% of boiler heating with a heat pump, reducing energy costs by £20,000 annually.

Implementation Considerations

When planning a heat pump or hybrid system, facility managers should consider:

System Sizing: Properly sized equipment ensures optimal efficiency and avoids overspending.
Integration with Existing Infrastructure: Assess whether boilers, chillers, and ductwork can be reused.
Phased Installation: Reduces downtime in operational facilities.
Controls & Automation: Smart control systems ensure maximum energy efficiency and comfort.

To ensure a smooth installation and maximum ROI, schedule a free system review with Inergy Group.

ROI and Case Studies

Industrial Warehouse Example:

Heat pumps and hybrid HVAC systems are transforming industrial and commercial facilities in the UK. By combining energy efficiency, operational reliability, and regulatory compliance, facility managers can future-proof their HVAC systems while reducing costs and carbon emissions.

Ready to modernise your industrial HVAC system?

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Is Industrial Adiabatic Cooling the Smarter Alternative to Refrigerant-Based Systems?

Inergy Guest — Fri, 19 Jun 2026 12:50:24 +0000

In recent years, the conversation around industrial cooling has shifted. It’s no longer just about achieving the right temperature, it’s about how efficiently, sustainably, and cost-effectively that cooling is delivered.

Rising energy costs, increasing environmental regulation, and growing scrutiny of carbon emissions all combine to lead businesses to reassess traditional cooling methods. And industrial adiabatic cooling is emerging as a compelling alternative to conventional refrigerant-based air conditioning systems.

So, is it the right solution for your business premises?

Rethinking Conventional Cooling

Traditional air conditioning systems rely heavily on refrigerants and energy-intensive compressors to achieve precise temperature control. While effective, these systems come with several negatives:

High energy consumption due to continuous compressor operationHigh energy consumption due to continuous compressor operation
Environmental impact from refrigerants, many of which have high global warming potential (GWP)
Ongoing maintenance and replacement costs for refrigerant gases and system components
Significant capital investment, particularly for large-scale industrial applications

As sustainability targets tighten and operating costs rise, these factors are becoming increasingly difficult to justify.

Adiabatic cooling offers a fundamentally different approach. Instead of relying on refrigerants and compression cycles, it uses the natural process of evaporation to reduce air temperature.

The result is a simpler, more environmentally responsible cooling method, particularly suited to large, open industrial spaces including warehouses and distribution centres.

Advantages of Adiabatic Cooling

One of the most compelling benefits of adiabatic cooling is its dramatically lower energy consumption.

Because there are no compressors involved, energy use is largely limited to fans and water circulation. This can deliver:

In addition, compared to traditional air conditioning systems, adiabatic cooling typically requires:

This means reduced initial capital outlay, making it an attractive option for your business when looking to upgrade or expand your industrial cooling and temperature control systems.

In the face of escalating energy prices, this represents an immediate and long-term financial advantage.

Is Adiabatic Cooling Eco Friendly?

Adiabatic systems eliminate the need for refrigerants entirely.

This means:

As an added bonus, the lower energy demand contributes directly to reduced carbon emissions, supporting your industrial decarbonisation goals.

If you’re committed to reducing your environmental footprint, adiabatic cooling can help achieve:

By lowering both energy consumption and reliance on harmful substances, it offers a practical, immediate step toward more sustainable operations.

Is Adiabatic Cooling Better Than Air Conditioning?

Without the need for compressors or refrigerant circuits, we can reduce the system complexity you need. This leads to:

For facilities teams, this means less downtime and greater reliability.

In addition, we offer ongoing service and maintenance support throughout the lifespan of your system.

While modern refrigerant-based systems still provide superior precision for tightly controlled environments (cleanrooms, data centres, etc.), many industrial applications simply don’t require that level of control.

Adiabatic cooling delivers:

Combined with well-designed ventilation, it creates a healthier and more comfortable working environment for your team.

Adiabatic cooling is particularly effective in:

In these environments, precise temperature control is often less critical than maintaining comfortable and safe working conditions, an area where adiabatic systems excel.

Is It Right for Your Business?

Adiabatic cooling is not a one-size-fits-all solution, but for many industrial and commercial environments, it represents a clear improvement over conventional cooling methods.

At Inergy Group, we tailor our approach to every project. By understanding your facility, operational needs, and long-term goals, we can help you determine whether adiabatic cooling is the most efficient and cost-effective option for you.

Take the Next Step

If you’re looking to:

Adiabatic cooling could be the answer.

Contact Inergy Group today to explore the best solution for your business.

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What UK Facility Managers Need to Know

Inergy Guest — Thu, 04 Jun 2026 10:35:19 +0000

We can already see that 2026 will be remembered as a pivotal year for industrial and commercial HVAC in the UK. With stricter regulations, continually rising energy costs, and increasing pressure to meet ESG targets, facility managers must understand the trends shaping investment, maintenance, and upgrades.

Industrial HVAC is no longer just about keeping buildings at a comfortable temperature – it’s about efficiency, compliance, and operational resilience. In this guide, we highlight the seven trends facility managers should prioritise to stay ahead.

Ready to future-proof your facility’s HVAC systems? Contact Inergy Group today for a free consultation.

Sustainability & Regulatory Compliance

UK regulations are accelerating the transition to low-GWP refrigerants and energy-efficient HVAC systems. Non-compliance can lead to high penalties and operational disruptions. Sustainable cooling and heating are essential considerations now.

Key Sustainability Considerations:

Ensure your facility is compliant and energy-efficient—schedule a compliance review with Inergy Group.

Heat Pumps & Hybrid Systems

Heat pumps are no longer just residential solutions – they’re now viable for industrial manufacturing processes, large warehouses, and commercial campuses. Hybrid systems, which combine heat pumps with existing boilers, balance efficiency with reliability.

Benefits for Industrial Facilities:

Smart & Predictive Systems

IoT-enabled sensors, cloud-connected building automation, and AI-driven predictive maintenance are transforming industrial HVAC management.

Advantages of Smart Systems:

Maximise efficiency and reduce downtime – schedule a smart system assessment today.

Indoor Air Quality (IAQ) Goes Beyond Comfort

IAQ is no longer just a comfort feature – it directly impacts productivity, health, and regulatory compliance. Poor air quality can increase absenteeism and reduce operational efficiency.

IAQ Best Practices:

Enhance indoor air quality while reducing energy costs. Talk to Inergy Group today.

Lifecycle & Circular HVAC Solutions

Instead of full replacement, retrofitting or remanufacturing HVAC equipment extends system life, lowers costs, and reduces embodied carbon. Which will be the right choice for your facility will depend on a number of unique factors. If you’d like to discuss your options with experts to better make an informed decision, contact us directly and let us know.

Key Decision Points:

Discover circular HVAC solutions and reduce costs while meeting ESG goals.

VRF & Modular Deployment

Variable Refrigerant Flow (VRF) and modular systems allow flexible, scalable HVAC for multi-tenant and industrial spaces. These systems adapt to load variations efficiently, saving energy while maintaining comfort.

Implementation Tips:

The Takeaway for Facility Managers

The half-way point of 2026 is a perfect time to assess and future-proof your industrial HVAC systems. The most important things you can do right now are:

Ensure your facility is ready for the remainder of 2026 and beyond. Contact Inergy Group for a free industrial HVAC consultation.

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Lithium-Ion Battery Storage Safety: Why Ventilation Matters

Inergy Guest — Wed, 25 Mar 2026 09:28:46 +0000

Ensure lithium-ion battery safety with engineered ventilation. Learn why proper airflow and cooling are critical for battery storage risk management

A Growing Risk Hiding in Plain Sight

The recent fire at a vape shop in Glasgow should be a wake-up call for any business storing lithium-ion batteries.

What initially appeared to be a localised retail incident quickly escalated into a major emergency response, with extensive damage to property and disruption to the surrounding area. While investigations continue, the likely involvement of lithium-ion batteries highlights a growing and often underestimated risk.

This isn’t just a fire safety issue anymore. It’s an engineering one.

Across the UK, lithium-ion batteries are now embedded in everyday operations:

Yet many of these environments are still treated as standard storage spaces, not the high-risk zones they can quickly become.

The core challenge lies in thermal runaway – a failure mode capable of generating extreme heat, flammable gases, and rapid fire spread.

And critically, it doesn’t always start with flames.

The Gap Between Guidance and Reality

Current UK guidance is clear in principle:

“Store batteries in cool, well-ventilated areas, away from heat and ignition sources”

But in practice, “well-ventilated” is rarely defined – and even more rarely, engineered.

Too often, businesses rely on:

The result?

A hidden vulnerability that only becomes visible when something goes wrong.

Why Ventilation Is the First Line of Defence

When it comes to lithium-ion battery storage, ventilation isn’t a secondary consideration – It’s fundamental.

1. Temperature Control Reduces Failure Risk

Elevated ambient temperatures accelerate battery degradation and increase the likelihood of failure. Without controlled cooling, risk builds silently over time.

2. Gas Management Prevents Escalation

Failing batteries can release flammable gases before ignition. In confined or poorly ventilated spaces, these gases can accumulate to dangerous levels.

3. Smoke Control Protects People and Property

In a fire scenario, lithium batteries produce dense, toxic smoke and extreme heat. Without effective extract systems, evacuation, firefighting, and containment become significantly more difficult.

The Shift: From Compliance to Engineered Solutions

Forward-thinking organisations are starting to move beyond basic compliance and towards purpose-designed battery storage environments.

These typically include:

Dedicated, segregated storage areas
Independent ventilation systems with smart controls
Active temperature control with redundancy
Sensor-driven airflow response
Integration with fire detection and suppression systems

This is where HVAC design moves from a background utility to a critical safety system.

Why This Matters Now

Incidents like the one in Glasgow are increasing scrutiny from:

At the same time, battery volumes are only going in one direction – that is up.

This combination is creating a clear divide between:

In workplaces and non-domestic premises, fire safety is covered under the Regulatory Reform (Fire Safety) Order 2005. This places a legal duty on a designated ‘Responsible Person’ to conduct appropriate audits which includes the risks associated with lithium-ion batteries¹.

Where Specialist Expertise Makes the Difference

Designing ventilation for battery storage isn’t the same as designing for comfort or general industrial use.

It requires an understanding of:

This is exactly where Inergy Group is supporting clients across the UK delivering compliant solutions backed by the British Safety Council³.

By combining HVAC engineering expertise with real-world risk understanding, Inergy Group is supporting businesses:

Final Thoughts

Battery storage risk is evolving faster than many buildings are.

The Glasgow incident won’t be the last – but it should be the moment the industry rethinks its approach.

Because in this context, ventilation isn’t optional.

It’s the control that can make the difference between a contained issue and a major incident.

Start your Project with us

If your business stores or handles lithium-ion batteries, now is the time to ask a simple question:

Would your current environment stand up to a failure event?

If the answer isn’t clear, it’s worth a conversation.

References

1, 3, Fire Safety and Lithium Batteries: What You Need to Know | British Safety Council

2, https://internationalfireandsafetyjournal.com/

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How UK Industrial Facilities Can Achieve Net Zero with HVAC Decarbonisation

Inergy Guest — Tue, 27 Jan 2026 15:27:37 +0000

UK industrial and commercial facilities are under increasing pressure to reduce carbon emissions, cut energy costs, and meet Net Zero 2050 targets. Heating, ventilation, and cooling systems are often some of the largest contributors to a building’s carbon footprint.

For warehouses, factories, and logistics hubs, upgrading HVAC systems isn’t just about compliance, it’s about improving efficiency, reliability, and operational performance.

Inergy Group helps UK businesses decarbonise their HVAC systems with practical, phased, and commercially viable solutions. For more information, call us on 01204 929999.

Why Decarbonise Industrial HVAC?

Industrial HVAC is energy-intensive:

High energy use across large spaces with racking, mezzanines, and high ceilings
Uneven temperatures causing hot and cold spots, affecting staff and stored goods
Rising energy bills driven by outdated or inefficient equipment
Regulatory and ESG pressures requiring action on carbon emissions

Decarbonising HVAC allows facilities to lower costs, reduce carbon, and improve operational reliability, all without sacrificing performance.

How Inergy Group Supports UK Industrial Clients

Low Carbon Heating Systems

Switch from gas or oil to high-efficiency electric heaters, heat pumps, and hybrid systems.

Energy Efficient Cooling & Climate Control

Modern cooling technologies reduce energy use while maintaining optimal conditions for staff and products.

HVAC Retrofit & System Upgrades

Upgrade existing equipment to reduce emissions and extend lifespan without full replacement.

Smart Controls & Energy Management

Optimise operations with data-driven controls, predictive maintenance, and energy monitoring.

Preventive & Predictive Maintenance

Ensure long-term performance and carbon reduction through scheduled maintenance programmes.

Achieving Net Zero in Practice

Inergy Group works with UK businesses with warehouses, factories, and distribution centres to develop tailored decarbonisation roadmaps:

This phased approach ensures minimal disruption while delivering measurable reductions in energy use and carbon emissions.

Benefits for UK Industrial Operators

Contact Inergy Group

Decarbonising industrial HVAC systems isn’t just about regulatory compliance. At Inergy Group, we see it as an opportunity to improve efficiency, cut costs, and future-proof your operations.

We provide end-to-end support for UK industrial facilities looking to transition to net zero HVAC systems. Contact us today to book a free site assessment and start your journey towards low-carbon, efficient, and reliable HVAC operations.

The post How UK Industrial Facilities Can Achieve Net Zero with HVAC Decarbonisation appeared first on inergygroup.co.uk.

TM44 Air Conditioning Surveys: What You Need to Know

Inergy Guest — Fri, 09 Jan 2026 14:22:12 +0000

If your commercial air conditioning system is over 12kW, UK law requires a TM44 energy assessment – commonly called a TM44 survey. These surveys are more than just a legal requirement; they are a practical tool for ensuring your system runs efficiently, safely, and cost-effectively.

What is a TM44 Survey?

A TM44 survey is a legal inspection of commercial air conditioning systems designed to:

Assess energy efficiency
Identify faults or inefficiencies in the system
Ensure the system complies with UK building regulations

The survey results in a detailed report that includes recommendations to improve efficiency and reduce energy consumption.

Why TM44 Surveys Matter

Legal Compliance: Failing to carry out a TM44 survey can result in fines or enforcement action
Energy Efficiency: Systems that are poorly maintained or inefficient consume more electricity, increasing operational costs
Equipment Life Span: Identifying issues early helps prevent unexpected breakdowns, extending the life of your system
Environmental Responsibility: Optimising energy use reduces your carbon footprint, supporting sustainability goals

What Happens During a TM44 Survey?

Our Inergy Group certified engineers will:

Examine the air conditioning system and components
Review energy usage and efficiency
Check that the system operates safely and effectively
Produce a TM44 report with actionable recommendations

The report may highlight opportunities such as upgrading components, improving controls, or carrying out minor corrective maintenance to boost efficiency.

Who Needs a TM44 Survey?

Any commercial building with an air conditioning system over 12kW must have a TM44 survey. Systems include:

Office buildings
Retail outlets
Schools and universities
Hospitals and healthcare facilities

How Often Are TM44 Surveys Required?

The law requires a survey at least every five years for existing systems, and a report must be kept on-site. If changes, additions or upgrades are made to the system, a new survey may also be required.

Benefits of Acting Now

Stay fully compliant with UK regulations
Reduce energy bills and operational costs
Extend the life of your air conditioning system
Avoid fines and unexpected repair costs

Get ahead for 2026, there’s no better time to schedule your TM44 survey and ensure your air conditioning system is running safely, efficiently, and legally for the year ahead.

Book your TM44 survey today and gain peace of mind for your business, staff, and clients.

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How Infrared Heating Works in Large Warehouse Spaces

Inergy Guest — Thu, 08 Jan 2026 14:09:36 +0000

Efficiently heating large warehouse spaces has always been a challenge. With large floor areas, high ceilings and constant air movement, conventional heating systems become costly. However, infrared heating systems offer a different approach that align better with warehouse environments.

At Inergy Group, this month’s blog offers a guide to infrared heating and how it works in large warehouse spaces. For more information, call us on 01204 929999.

What is Infrared Heating?

Infrared heating works by converting electricity into radiant heat. By infrared waves that travel through the air, energy is transferred directly to solid objects. When infrared strikes a surface, it is absorbed and converted into heat, providing instant warmth.

How Infrared Heating Operates in a Warehouse Environment

In large warehouse spaces, infrared heaters are often mounted at high levels. Once activated, the heater delivers precisely where work is taking place. As a surface warms up, they release heat slowly, creating a consistent and comfortable working temperature.

High ceilings are one of the biggest sources of inefficiency for traditional heating systems, as warm air naturally rises. With infrared heating, the heat is directed downwards and there is no reliance on air circulation. This reduces temperature fluctuations and cold spots common with air-based systems.

Energy Efficiency and Running Cost Benefits

One of the main reasons warehouse operators switch to infrared heating is down to energy efficiency. With its targeted approach, you will see measurable reductions in energy use and long-term operating costs.

Warehouses are dynamic environments. As loading bay doors constantly open and close, forklifts pass through, and ventilation systems run continuously, infrared heating greatly reduces rapid heat loss.

In addition to this, you benefit from reduced maintenance and lifecycle costs. Due to their simple design, infrared heating systems typically require minimal maintenance. At Inergy Group, we offer specialist industrial and commercial heating maintenance services. We support various businesses across the UK with long-term maintenance contracts, one-off servicing and responsive repairs.

Contact Inergy Group

At Inergy Group, we provide energy efficient infrared heating systems for a wide range of warehouse premises. For further information, you can call us on 01204 929999.

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Warm Air Heating in Factories: Airflow, Filtration, and Even Temperatures

Inergy Guest — Thu, 25 Sep 2025 12:08:06 +0000

Factory floors are busy and tall. Some areas need steady background warmth. Others wrestle with dust or fumes. Doors open. Shifts change. Poor airflow planning leaves cold spots and high bills.

At Inergy Group we design warm air systems that hold even temperatures with clean, well-mixed air. We start with airflow, then add filtration matched to your process, destratification for height, the right level of fresh air, and controls that keep everything in tune.

When to Choose Warm Air Heating in Factories

Warm air suits large interiors where the goal is an even background temperature across the working area. It also anchors air quality work, because filtration and fresh air integrate cleanly with a warm air design. For the broader context and where warm air sits alongside other options, our commercial and industrial heating systems guide is a useful starting point.

There is a legal context. UK law asks employers to provide a reasonable indoor temperature. HSE guidance often uses 16 °C for most indoor work, or 13 °C for physically demanding tasks. Facilities teams can use those figures to select sensible setpoints and plan zoning strategies, as set out by the HSE.

Airflow: Throw, Mixing and Returns

Even temperatures begin with air that moves the way your building demands. Before anyone talks about plant size, the layout needs to deliver reach, mixing, and a reliable way back to the heaters.

Think about the day-to-day reality of your space. Do pallets and racking change monthly, or are the lines fixed for years. Are there mezzanines or overhead cranes that interrupt jets. Small planning decisions here avoid big running costs later, because the right throwing distance and return paths reduce the need for brute-force capacity.

Throw and spread. Select discharge patterns and mounting heights that carry warm air across the floor rather than dumping it near the unit.
Mixing and returns. Plan return paths so air comes back for reheating and does not stall behind machinery.
Outlets. In ducted schemes, use grilles and diffusers that create stable jets at your mounting height.
Unit heater layout. For open floors, place units so each jet overlaps the next, not fights it.

Commissioning turns drawings into comfort. We prove throw, mixing, and stability at handover, following the framework in CIBSE commissioning guidance.

Destratification for Tall Spaces

Warm air rises to the roof. In high bays, that is heat where no one works. Destratification fans blend warm air back to the working plane, so heaters run for fewer hours and setpoints hold with less effort.

Independent field research in active warehouses has reported double-digit cuts in heating energy, with one study indicating around a fifth less heating energy when destratification is sized and controlled correctly. Exact savings depend on height, volume, and fan control, but the direction is consistent.

Control matters. We design sensor bands at different heights so fans run in short, targeted bursts, not continuously. The aim is even temperature, not a constant draft. If you are weighing system types for big volumes, visit our comparison article on heating systems for warehouses.

Filtration that Fits the Task

Factories often need more than warmth. Dust, smoke, and mist make air quality central to comfort and compliance. A warm air system gives you space for filters without starving the fans, which is why filtration planning should happen alongside heating selection rather than after it.

Start by identifying the contaminants you care about. Ask operators where haze builds up, check housekeeping logs, and review any exposure monitoring. With a simple map of sources and particle sizes, you can match filter classes to risk and choose housings that are practical to maintain in your shifts.

Filtration Standards

ISO 16890 replaced EN 779. Filters are rated by capture performance for PM10, PM2.5, and PM1, which lets you match the filter to the contaminant sizes you care about. See the standard explained by manufacturers such as Camfil.
Energy matters. Filters with the same efficiency can have very different pressure drops. Eurovent’s guidance on selecting EN ISO 16890 filter classes explains both efficiency and energy use, so you pick a filter that cleans the air without wasting fan power. Find the framework on eurovent.eu.

Combining General Filtration with Source Capture

General filtration is not a substitute for local exhaust ventilation when a process creates harmful contaminants. The HSE’s LEV guide explains when to capture at source and how to commission it. Warm air then provides background comfort and the make-up air that balances pressure. If you want a primer on supply and extract options, our commercial ventilation guide is a useful reference.

Fresh Air and Make-Up Air

If you extract air for hygiene or a process, you must replace it. Do it right and comfort improves. Get it wrong and doors become inlets, cold edges appear, and fuel use rises.

A short site walk often reveals the story. Look for tight-closing doors that seem to fight you, notice where cardboard dust or welding smoke drifts, and ask staff which corners feel cold. These clues tell you whether the building is negative and where make-up air should enter to help, not harm.

Balance supply and extract by zone so the building does not pull uncontrolled air through gaps.
Pre-heat winter make-up air to avoid cold drafts at floor level.
Filter outdoor air to a level that suits your risk profile, then mix with return air before supply.

HSE guidance is clear: employers must ensure adequate ventilation in enclosed workplaces. Warm air systems are a clean way to integrate that fresh air into heating.

Controls that Do the Heavy Lifting

Many savings come from control logic rather than new plant. The right schedules, setpoints, and interlocks stabilise temperatures and reduce run-hours without adding complexity for operators.

Our approach is to keep controls simple to use and easy to maintain, while still responding to doors, shift patterns, and height-related temperature bands. The focus is on predictable comfort first, then on optimisation once the basics are reliable.

Zone schedules. Different areas, different times and temperatures.
Set-back and reset. Lower setpoints out of hours and reset supply temperatures to avoid overshoot.
Door interlocks. Reduce fan speed or pause heating while shutters are open.
Multi-height sensors. Control to a temperature band that reflects stratification.
Alarmed maintenance. Filters, burner run-hours, and fault prompts reduce downtime.

If your site plan is evolving, our HVAC service and maintenance tips cover the checks that protect performance and warranties.

Sizing and Selection

The numbers come first, but they only help when they reflect how your building actually runs. We start with a measured view of heat loss and air change, then we layer in production realities such as door cycles, machine waste heat, shift overlaps, and occupied zones.

Good sizing finds the sweet spot between comfort and consumption. Undersize, and heaters chase the setpoint all day. Oversize, and you pay for capacity that cycles on and off while wasting fuel. The right answer takes account of air quality too, because filtration classes and fresh air rates affect fan power and burner duty.

Selection then matches plant to layout. Unit heaters and ducted warm air each have strengths. Unit heaters suit open floors that benefit from overlapping jets. Ducted systems suit spaces that need specific discharge patterns, quieter operation, or defined returns. In both cases, we keep maintenance in mind so filters and belts are easy to access without stopping production lines.

Heat loss. Fabric, leakage, and door cycles dominate.
Internal gains. Machinery and process heat may carry part of the load.
Occupancy. Density and dwell times by zone shape priorities.
Air quality. Filtration class and fresh air rates define fan and heater capacity.

Modern warm air plant, sized and commissioned correctly, can deliver strong seasonal performance while holding steady setpoints. For a wider overview of choices and trade-offs, keep ourCommercial heating guide open as you plan.

Commissioning, Testing and Evidence

Commissioning is where performance becomes measurable. We verify throw, mixing, and temperatures at several heights before handover. We check pressure drops across filters, prove alarms, and document control responses to doors and schedules.

You receive an evidence pack that records settings and results for future optimisation, including drawings marked with measured throws and sensor locations. This structure follows the commissioning codes published by CIBSE, so anyone maintaining the system can see what “good” looks like.

Avoiding Pressure Drop

Dirty filters raise pressure drop. Fans draw more power and heaters work harder to keep up. Track filter condition and change on evidence, not guesswork, using logged pressure readings and alarm thresholds that reflect your shifts. Selecting energy-rated, ISO 16890-classified filters helps hold consumption down between changes.

Planned service should also include burner checks, gas rate, safety interlocks, flues, and proof that destratification and sensors behave as intended.

Quick Wins

Tune destratification. Add sensor control, not a permanent on switch. Studies show savings when fans mix briefly and stop.
Fix return paths. Many cold corners are return issues rather than heat output.
Seal the envelope. Gaps around doors and voids create unwanted inlets.
Reset schedules. Do not hold full setpoint during breaks or changeovers.
Pick the right filter class. Use ISO 16890 ratings and Eurovent guidance to match risk and energy.

Common Questions

Is warm air too inefficient for high bays?
Not if you design for throw and returns, add destratification, and commission correctly. Evidence supports meaningful energy reductions when stratification is controlled in tall spaces.

How often should filters be changed?
It depends on contaminant load and run-hours. We track pressure drop and set alarms. Change filters before they push fan energy up.

What temperature should we aim for?
Use a sensible baseline. Many factories work well in the mid-teens Celsius for general tasks.

Do we need LEV as well as filtration?
If a process creates harmful dusts, fumes, or mists, yes. Capture at source with LEV, then use warm air and ventilation for comfort and balance.

Warm Air Heating in Factories from Inergy Group

Ready to even out temperatures and cut wasted run-hours? Start with a site survey. We will measure heat loss, check return paths, and size filtration and make-up air, then come back with a clear design and costs. If a hybrid makes sense, we can pair warm air with radiant heating. Get started on the Warm Air Heating systems page.

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Distribution Centre Heating: Radiant vs Warm Air

Inergy Guest — Tue, 23 Sep 2025 13:42:12 +0000

Picking the right heat for a busy distribution centre is never simple. High bays, endless racking, doors that keep cycling. Heat drifts up, people work at floor level, and energy costs keep climbing.

This guide sets out a clear, practical way to choose between radiant and warm air heating. We show where each option excels, how to zone a DC, and how to use controls to cut waste. We also cover hybrids that blend the strengths of both. As Inergy Group, we design, install and maintain these systems across the UK, so the examples here reflect what we see on real sites.

Distribution Centre Heating: Everyday Problems

Distribution centres are hard to heat evenly. Roofs run high, aisles create canyons, and loading bays leak heat with every movement of goods. Without the right approach, warm air collects at the roof while the ground stays cool. This thermal stratification is a major reason heating bills run higher than they need to in large spaces. The Carbon Trust’s Warehousing and logistics guide shows that targeted controls and good air management are often the biggest win.

Workplace comfort also has a regulatory backdrop. HSE guidance expects a reasonable indoor temperature. In many workrooms a minimum of 16 °C is usually appropriate, or 13 °C for more strenuous work. Those numbers help set realistic setpoints without overheating.

How Radiant Heating Works

Radiant systems heat people and surfaces directly, not the air. In practice that means faster perceived warmth at floor level, especially in spaces with high ceilings or frequent door openings. Radiant tubes over pick faces and docks are a smart way to put heat exactly where people stand.

Best-fit zones: pick faces, marshalling areas, loading bays, workstations.
Strengths: quick comfort, less wasted heat at the roof, ideal for spot heating.
Watch-outs: radiant is line-of-sight. Large obstructions can cast “shadows”. We plan mounting heights, spacings and outputs to avoid this.

Want to learn more? Get full details on the benefits of this type of system on our radiant heating page.

How Warm Air Heating Works

Warm air heating works by raising the air temperature and distributing it across the volume. They suit open areas where even background temperatures matter, and they integrate well with filtration and fresh-air strategies.

Best-fit zones: open pick areas, packing halls, general circulation, welfare spaces.
Strengths: even temperatures, quick warm-up, compatible with air quality control.
Watch-outs: without destratification fans, heat can pool near the roof in high bays.

Modern warm air units can reach high seasonal efficiencies when properly set up and maintained, which is why they remain a strong choice for large buildings.

For more details, read our ultimate guide to commercial heating systems, or our comparison of warehouse heating options.

Radiant vs Warm Air: Decision Grid

Use the table below to shortlist the primary approach by zone. Many distribution centres will combine both.

Factor	Typical condition	Primary approach	Why
Ceiling height	Over ~8–10 m with high racking	Radiant at work areas	Direct warmth at floor level and less roof loss
Ceiling height	Lower bays or mezzanines with open volume	Warm air	Efficient volumetric heating and even background temperatures
Door cycles & docks	Frequent door openings	Radiant at loading bays	Reduces perceived cold during door events
Door cycles & docks	Occasional openings	Warm air with door interlocks	Holds setpoint and trims fan speeds when doors open
Racking density	Dense aisles and tall racks	Radiant for pick faces + destratification	Avoids shadowing and brings warmth back down
Racking density	Open picking or packing	Warm air	Even temperatures across larger open zones
Air quality	Dust or process emissions	Warm air with filtration/make-up air	Integrates with ventilation and filtration
Air quality	Minimal process loads	Radiant	Leaner, targeted heat where people work

What is destratification?
In tall spaces, warm air can pool at the roof and leave cooler air at floor level. Destratification fans gently mix the air to reduce the roof‑to‑floor temperature difference and cut run-time.

Why Destratification Matters in Tall DCs

Thermal stratification wastes heat by lifting warm air away from people. Destratification fans mix the air and can materially cut heating energy. Peer‑reviewed research reports a ~19.3% reduction in warehouse heating energy with fans operating, and a separate case study reports a 26.4% reduction in gas use. Results vary by height, layout and control logic.

We design destratification as part of warm air systems and also in hybrids. Fan selection, sensor placement and control logic make the difference between a fan that runs constantly and one that actually reduces run-hours.

For design fundamentals across large warehouses, our HVAC design guide outlines how airflow and plant rooms fit together.

Hybrid Heating in Distribution Centres

Many DCs achieve the best comfort and lowest running cost with a hybrid: radiant where people work, warm air for background. Typical pattern:

Radiant at docks and pick faces for instant comfort in draught‑prone areas.
Warm air for open zones to maintain an even temperature across shifts.
Destratification above racking to reduce roof losses and bring warmth back down.
Smart zoning and controls to coordinate everything.

Our overview of workshop and warehouse heating solutions shows how these elements work together, including the role of controls and staged upgrades.

Energy Saving Controls

Controls are where many quick wins sit:

Zoning by use: docks, pick faces, packing, offices.
Schedules and set‑backs: lower temperatures out of hours and between shifts.
Door interlocks: drop warm air fan speeds or pause heating while shutters are open.
Sensor strategy: temperature sensors at multiple heights to manage stratification.
Maintenance prompts: filters and safety checks scheduled via BMS alarms.

For warehousing and logistics, heating and controls are key energy hotspots, and tightening control routines often gives the first chunk of savings with minimal disruption.

Costs, Carbon and Payback

There is no single payback number that fits every distribution centre. That said, three levers tend to drive quick results:

Fix stratification: destratification cuts run-time and fuel use in tall bays. The ~19% research figure gives a sense of potential. Real results hinge on height, volume and fan control.
Appropriate background heat: warm air units with high seasonal efficiency and correct throw reduce overshoot and short‑cycling.
Targeted radiant islands: heat the work, not the void, especially at docks.

As the UK continues to decarbonise, reducing gas use through efficient heat and better controls supports wider net‑zero plans, while cutting operating costs.

Compliance, Safety and Maintenance

Plan for safe combustion air, flue routes, clearances and gas safety checks. Build a servicing calendar for burners and filters so performance stays high. The law asks for a reasonable indoor temperature and a sensible approach to thermal comfort. Use that framework to set policy and training for winter operations.

Our Commercial & Industrial Heating Systems page outlines ongoing maintenance services if you want one partner from design to aftercare.

Distribution Centre Zoning Example

Zone 1: Loading bays and marshalling. Radiant tubes over each bay, interlocked to doors.
Zone 2: Pick faces and conveyor feeds. Radiant islands along workstations.
Zone 3: Open pick and packing. Warm air heaters, balanced with destratification fans.
Zone 4: Mezzanine or offices. Smaller warm air units or splits with local control.
Zone 5: Returns and QC. Mixed, depending on draughts and occupancy.

For more on matching technology to warehouse areas, read our guide on how to heat a warehouse.

Frequently Asked Questions

Will radiant heaters cause hot spots near packaging?
Design and mounting height prevent hot spots. At Inergy Group, we space tubes and set outputs to suit working clearances and materials.

Can we combine radiant and warm air in one building?
Yes. Hybrids are common in DCs and can lower running costs when zones have different demands. The key is getting controls and destratification right so systems do not fight each other.

What temperature should we aim for?
Base setpoints on your tasks and HSE guidance. Many DCs operate comfortably around the mid‑teens Celsius for general activity, with local radiant boosting perceived warmth at workstations.

How fast will radiant feel warm at docks?
Usually within minutes at the work area because radiant heats people and surfaces directly rather than waiting to warm the volume.

Do destratification fans really save money?
When sized and controlled well, yes. Independent studies show material reductions in heating energy. Poorly placed fans can just move air. We model before we specify.

Are warm air heaters efficient enough for tall spaces?
Modern units can achieve high seasonal efficiency and perform well with destratification to cut roof losses.

Ready to improve comfort and cut wasted energy in your distribution centre? Book a free site assessment with Inergy Group.

Call 01204 929 999
Email info@inergygroup.co.uk
Or request a callback via our contact form

We will survey your site, model zones and controls, and give you a clear plan with costs, timelines and projected savings.

The post Distribution Centre Heating: Radiant vs Warm Air appeared first on inergygroup.co.uk.

Air Curtains for Loading Bays and Retail Entrances

Inergy Guest — Thu, 18 Sep 2025 15:07:41 +0000

Every time a loading bay or retail entrance door opens, conditioned air is lost and unfiltered air is allowed inside. The result is rising energy consumption, inconsistent temperatures, and increased strain on building systems. Traditional solutions such as lobbies, roller shutters, or plastic strip curtains often compromise either efficiency or practicality.

Air curtains provide a more effective approach. By creating an invisible barrier of high-velocity air, they prevent heat loss, improve comfort, and protect against dust and pollutants. For organisations seeking reliable, long-term performance, air curtains can deliver measurable reductions in energy use while maintaining compliance with UK standards. At Inergy Group, we design and install these systems as part of our wider heating and ventilation projects, ensuring each installation is matched to the specific site conditions.

What an Air Curtain Does at Doors and Bays

At its core, an air curtain is designed to reduce uncontrolled air movement through an open doorway. By projecting a uniform sheet of air across the full width of the opening, it separates internal and external environments. This barrier slows down the natural buoyancy-driven exchange of warm and cold air, which is one of the main causes of heat loss in winter and unwanted heat gain in summer.

The benefits extend beyond temperature control. Air curtains also limit the entry of dust, fumes, and insects. In a warehouse environment, this helps to protect stored goods and maintain consistent operating conditions. In retail spaces, the result is a more comfortable entrance area without the need for obstructive lobbies or plastic strip curtains.

Effectiveness depends on correct specification and installation. The air stream must cover the doorway fully and maintain the correct velocity profile down to floor level. Guidance from recognised industry bodies highlights the importance of correct placement, mounting height, and airflow uniformity to ensure performance. Poorly selected or incorrectly installed units risk creating draughts or leaving gaps where infiltration occurs.

By managing thermal separation at loading bays and retail entrances, air curtains directly contribute to energy savings and compliance objectives. This makes them a practical alternative to more intrusive physical barriers, while improving both comfort and cleanliness inside the building.

Selecting the Right Unit

Not all air curtains are the same, and selecting the right unit depends on the application. The first consideration is whether the unit should be ambient or heated. Ambient models project an unheated sheet of air across the opening, which is often sufficient for internal doorways or entrances where the primary objective is preventing dust and draughts. Heated air curtains, either electric or supplied from low-pressure hot water (LPHW), add warmth to the airflow. This helps offset cold infiltration in exposed loading bays or busy retail entrances during colder months.

Industrial and warehouse models are built for higher duty. They typically feature larger casings, powerful fans, and greater mounting heights to deal with wide or tall doorways where forklift trucks or delivery vehicles pass through. These units are designed to provide a deep, consistent airflow that can cope with adverse conditions such as wind pressure or rapid door cycling.

By contrast, commercial and retail entrance units prioritise quiet operation and appearance as well as performance. Slimline casings, concealed grilles, and low-noise fans are common, helping to create a welcoming environment for customers while still controlling energy loss.

Key performance factors include mounting height, doorway width, and the velocity profile of the air stream. To ensure the chosen air curtain achieves full coverage and effective thermal separation, it is important to rely on certified performance data rather than estimated values. Reputable testing standards confirm whether a unit will deliver the required airflow density at floor level, which directly affects its ability to control infiltration.

Choosing the right duty unit at the outset reduces running costs, prevents performance issues, and ensures compliance with design guidance. This is where Inergy Group supports clients by matching the correct type of air curtain to each site condition, from high-traffic warehouses to high-street retail stores.

Controls and Integration

Air curtains deliver the greatest benefits when they are integrated with the wider building system. A correctly selected unit should not run constantly; it should respond to door usage, occupancy levels, and internal conditions.

Door interlocks are one of the most effective control strategies. By linking the air curtain to automatic doors or roller shutters, the unit operates only when the opening is in use. This ensures airflow is maintained during critical moments, while unnecessary operation is avoided. Variable fan speed control adds further flexibility, allowing the output to be matched to external weather conditions or time of day.

Modern air curtains can also integrate with thermostatic sensors and building management systems (BMS). This enables central monitoring, fault detection, and energy optimisation across multiple entrances or bays. When combined with destratification fans or other ventilation components, the air curtain becomes part of a broader energy-saving strategy rather than an isolated piece of equipment.

Inergy Group specifies control options that balance reliability with ease of operation. We prioritise systems that provide consistent performance without adding unnecessary complexity for facility teams. This ensures air curtains contribute effectively to both compliance objectives and long-term cost control.

Energy and Cost of Ownership

Energy loss through open doors is a major contributor to rising heating costs. An air curtain, when correctly specified and installed, can reduce infiltration significantly, with industry studies showing potential savings of 30–80 per cent compared to unprotected openings. By maintaining stable temperatures, less demand is placed on warm air heating or ventilation systems, reducing running hours and extending service life.

The cost of ownership goes beyond energy savings. Air curtains require relatively little maintenance: periodic filter checks, cleaning of intakes, and fan inspections are usually sufficient. Compared with alternatives such as plastic strip curtains, they provide a longer service life and avoid the hygiene issues associated with worn or damaged strips. Unlike lobbies or double-door systems, they do not restrict vehicle or pedestrian flow, making them more practical in high-traffic environments.

There are, however, situations where an alternative solution may be appropriate. For small internal openings with limited use, a full-duty air curtain may not be necessary. Likewise, in areas where doors remain closed for most of the day, destratification fans or improvements to heating distribution may provide better value. The key is selecting the right approach for each doorway, balancing capital cost, operating savings, and compliance requirements.

At Inergy Group, we assess total cost of ownership as part of our design process. This ensures air curtain installations not only deliver measurable energy reductions but also integrate seamlessly with existing systems, keeping long-term costs predictable and manageable.

Compliance and UK Guidance

Energy performance is a central focus of current building regulations. In the UK, Approved Document L sets out requirements for limiting heat loss and improving efficiency in both new and existing buildings. Because open doors can undermine these objectives, air curtains are recognised as a practical solution to reduce infiltration while maintaining accessibility.

Industry standards reinforce this approach. Guidance from organisations such as CIBSE and FETA outlines how air curtains should be specified and positioned to provide effective thermal separation. Eurovent classification schemes also define how performance is measured, giving assurance that a unit will operate as intended when installed to the correct height and width.

From a compliance perspective, the key point is that air curtains support energy performance targets without restricting day-to-day operations. They also help maintain indoor environmental quality, which has implications for health and safety standards in both commercial and industrial settings.

Inergy Group ensures that every system we supply is selected and installed with these standards in mind. By aligning our designs with UK regulations and proven industry guidance, we help organisations meet their compliance obligations while controlling long-term energy costs.

Integrating Air Curtains with Heating and Ventilation Systems

Air curtains are rarely installed in isolation. Their performance is most effective when aligned with the building’s wider heating and ventilation strategy. At Inergy Group, we integrate air curtains into complete solutions that address both comfort and compliance.

When paired with our warm air heating service, air curtains help maintain consistent internal temperatures even when doors are in frequent use. This reduces wasted energy and ensures heating systems operate at peak efficiency. In industrial settings, we often combine air curtains withindustrial ventilation systems to maintain air quality and manage internal pressure conditions. The result is a coordinated approach that balances energy efficiency, comfort, and safety.

Because every site has its own requirements, we design systems around the unique challenges of each facility. Whether it is specifying a robust warehouse air curtain for a high-traffic loading bay, or a discreet commercial unit for a retail entrance, we ensure the installation fits seamlessly with existing infrastructure. Our technical team also provides guidance on controls, maintenance planning, and long-term cost of ownership.

This integrated approach allows organisations to gain more from their investment. Instead of viewing air curtains as standalone equipment, they become part of a complete strategy for energy savings and compliance across the building.

Applications

Loading Bays

Loading bays are among the most challenging environments for energy control. Large doorways, exposure to external weather, and the constant movement of vehicles create conditions where uncontrolled infiltration can quickly raise energy costs.

High-duty industrial air curtains are designed for this exact purpose. They deliver a deep, powerful air stream that resists cross-drafts and maintains coverage across wide openings. Units can be mounted horizontally above the doorway or vertically along the sides, depending on clearance and structural constraints. Correct positioning ensures that even in windy or exposed locations, the barrier remains effective.

In these settings, heated models are often specified to counter cold air ingress, especially during winter months. By stabilising indoor conditions, they support both energy efficiency and operational continuity in warehouses and distribution centres.

Retail Entrances

Retail entrances require a different balance of performance and aesthetics. Here, the objective is to maintain customer comfort without creating draughts or visual obstructions. Slimline casings and low-noise fans make commercial air curtains suitable for shopfronts and high-street units. Ambient models are common, but heated air curtains are often used in colder climates to provide an additional layer of comfort for people entering the store.

Effectiveness depends heavily on placement. The air stream must fully cover the entrance, with enough velocity at floor level to resist infiltration without generating discomfort. By managing these factors, retail air curtains deliver measurable energy savings while also enhancing the shopping environment.

In both loading bay and retail applications, the right choice of model, mounting method, and control strategy ensures the system achieves long-term reliability and compliance. Inergy Group provides the technical expertise to make these decisions with confidence, ensuring every installation meets both operational and regulatory expectations.

Frequently Asked Questions

Do air curtains work in very cold or windy conditions?

Yes, when correctly specified. Industrial-duty models deliver higher air volumes and velocity to resist strong cross-drafts. Placement and mounting height are critical to ensure full coverage of the opening.

Are air curtains noisy or uncomfortable to stand beneath?

Modern units are designed with low-noise fans and carefully directed airflow. In retail environments, slimline casings and optimised discharge angles minimise draughts at head height.

What maintenance do they require?

Air curtains are relatively low-maintenance. Routine checks involve cleaning intake grilles, replacing filters if fitted, and inspecting fans. With planned servicing, units typically achieve long service lives and predictable running costs.

Can they be integrated with automatic doors and fire safety systems?

Yes. Air curtains can be interlocked with automatic doors so they run only when needed. They can also be connected to building management systems and fire alarm circuits for safe shutdown in an emergency.

Are heated units more cost-effective than ambient?

It depends on the application. Heated air curtains add comfort by offsetting cold infiltration, especially in loading bays or winter retail conditions. Ambient units, however, provide the same barrier effect at lower running cost where heating is not required.

By addressing these common concerns, we help ensure that organisations understand both the capabilities and the limitations of air curtain systems before specification. Inergy Group provides tailored advice to match each installation with site conditions and compliance needs.

Air Curtain Systems from Inergy Group

Air curtain projects are effective only when backed by the right design, installation, and long-term support. At Inergy Group, we deliver this by combining product knowledge with a strong local presence. We cover locations across the UK, supporting both single-site and multi-site organisations.

We understand that every facility is different. A warehouse may require a high-duty heated model to stabilise temperatures during constant door operation, while a retail entrance might benefit from a discreet, ambient unit to maintain comfort without visual impact. Our technical team evaluates these conditions in detail, ensuring that each installation delivers long-term value.

For those exploring wider heating strategies, our guide to warehouse heating systems provides additional insight. This complements our air curtain expertise, helping organisations build complete solutions that balance energy efficiency, compliance, and cost of ownership.

If you are considering air curtains for a loading bay, retail entrance, or part of a larger heating and ventilation project, we invite you to speak with us. Inergy Group can provide design advice, specification support, and installation services tailored to your facility.

The post Air Curtains for Loading Bays and Retail Entrances appeared first on inergygroup.co.uk.