How to Choose a Warehouse Heating System Before Winter

Shopping storage warehouse

The right warehouse heating system depends on far more than the size of the building. Ceiling height, insulation, door use, occupied zones, stock requirements, operating hours and future plans all influence which system will work best. Starting early gives operators the best chance to complete surveys, design work and any required installation or maintenance before peak winter demand.

Why plan warehouse heating before winter?

Waiting until temperatures drop can turn a planned improvement into an urgent repair or replacement. Surveys, design work, equipment availability, access arrangements and commissioning all take time, particularly in large or busy distribution buildings. Early planning also allows operators to consider the commercial impact of the work. Installation may need to fit around shifts, vehicle movements, racking, loading areas or seasonal peaks. A system that is specified and tested before winter is less likely to create avoidable disruption when reliable heating matters most.

Identify weaknesses before the existing system is working at full winter demand.
Allow time for a proper site survey and heat-loss assessment.
Plan access, equipment positioning and installation around warehouse operations.
Compare whole-life cost rather than accepting the quickest available replacement.
Commission controls and zones before the coldest weather arrives.

1. Define what the heating system must achieve

A good specification begins with the required outcome. Some warehouses need comfortable conditions throughout the building, while others only need heat in packing areas, loading bays or fixed workstations. In other cases, the main priority is protecting products, equipment or processes from low temperatures. Confirm whether the system needs to:

Maintain a consistent temperature across the full warehouse
Heat defined working zones without heating unused storage space
Keep stock above a minimum temperature
Provide frost protection during unoccupied periods
Warm the building quickly at the start of a shift
Replace unreliable equipment while allowing for future layout changes

These objectives can lead to very different designs. Heating the whole air volume of a high-bay warehouse may be appropriate in one building and unnecessary in another.

Practical example: the Eddie Stobart warehouse project

The Eddie Stobart project shows why the operating requirement must come first. The warehouse measured 200 metres by 100 metres, giving a total area of 20,000 square metres, and the products stored inside needed to remain above 10°C. IHC installed an LPG-fired Nor-Ray-Vac system with 35 burners across six zones. The zoned design provided control over different parts of the building and allowed the system to remain versatile for both the immediate use and potential future uses of the warehouse. The lesson is not that every large warehouse needs the same equipment. It is that the temperature requirement, scale of the building and need for flexible control should shape the solution from the outset. Read the Eddie Stobart case study.

2. Assess how the warehouse operates

A heating system cannot be selected accurately from floor area alone. The survey should consider the daily movement of people, vehicles, stock and air through the building.

Where do employees spend most of their time?
Are there fixed workstations, packing benches or inspection areas?
How frequently do loading doors open, and for how long?
Does racking restrict airflow or block radiant coverage?
Are some areas used only occasionally?
Does the building operate one shift, several shifts or continuously?
Will the warehouse layout or purpose change in the next few years?

This operational picture helps determine whether the entire warehouse needs heating or whether separate zones would provide better control.

3. Understand the effect of the building

Large industrial buildings present heating challenges that are less significant in offices or smaller commercial premises. High ceilings create a large air volume, and warm air can collect at roof level instead of remaining where people work. Loading doors, roof construction, insulation and uncontrolled air leakage can all increase heat loss. A professional warehouse survey should review:

Building length, width and ceiling height
Wall, roof and door construction
Insulation levels and obvious air leakage
Number, size and opening frequency of loading doors
Existing gas, LPG and electrical supplies
Ventilation requirements and extract systems
Racking, machinery and other obstructions
Safe access for installation and future maintenance

These details allow the contractor to assess heat demand and equipment positioning rather than simply matching a heater output to a square-metre figure.

4. Compare the main warehouse heating options

Warm air heating

Warm air systems draw in air, pass it across a heat exchanger and distribute the heated air through the space. They can provide fast, effective heating in open industrial buildings where a substantial proportion of the warehouse needs to be warmed. Warm air may be suitable when:

The majority of the warehouse requires heat
The layout allows air to circulate effectively
Rapid warm-up is important
The building is reasonably well insulated

The design must account for warm air rising. Destratification fans, suitable controls and careful unit positioning may be needed to return heat to occupied level and reduce temperature differences between the floor and roof. Learn more about warm air heating systems.

Radiant heating

Radiant heating transfers heat primarily to people and surfaces within its coverage area. This can reduce the need to bring the entire air volume to a uniform temperature, which may be useful in high buildings, defined working zones or warehouses where doors open frequently. Radiant heating may be suitable when:

Employees work in specific areas
The roof is high and heating the full air volume may be less practical than targeting occupied areas
Loading doors create frequent air changes
The operator needs separate control over different zones

Positioning is critical. Racking, stored goods and machinery can interrupt radiant coverage, so the design should be based on the actual layout. IHC provides radiant heating systems for commercial and industrial premises.

Zoned or combined systems

A single technology is not always the best answer. One warehouse may benefit from radiant heating above occupied work areas, warm air heating in general storage zones, air curtains at busy entrances and destratification fans where heat gathers at roof level. Zoning gives operators more control over when and where heat is used. It can also make the building easier to adapt if racking, shifts or tenant requirements change.

5. Give controls the same attention as the heaters

A well-selected heater can still perform poorly if the controls do not reflect how the warehouse operates. Controls should make it easy to avoid heating empty areas or running the system outside the required hours. Useful control considerations include:

Separate temperature zones
Time schedules matched to shifts
Frost-protection settings
Remote access or monitoring
Door interlocks where appropriate
Different settings for weekends and shutdown periods
A clear, accessible control interface for site staff

Controls should remain straightforward for site staff while providing enough flexibility to match heat output to actual demand.

6. Compare whole-life cost, not only installation price

The cheapest installation may not deliver the lowest whole-life cost. Warehouse operators should compare energy use, servicing, reliability, parts availability and the commercial cost of downtime. Ask each contractor to explain:

Why the proposed system suits the building and operating pattern
How the heating will be zoned and controlled
What maintenance the equipment will require
How easily parts and qualified support can be obtained
Whether one failure could disable a large part of the system
How the installation could accommodate future changes and support longer-term energy or carbon objectives

Ongoing commercial heating servicing and maintenance should form part of the planning process, especially where temperature control is important to stock or operations.

7. Plan installation around warehouse operations

Large heating installations may require access platforms, roof-level work, temporary closures or coordination with vehicle and pedestrian routes. These practical issues should be discussed before the project programme is agreed.

Can work be phased by zone?
Will aisles, loading bays or racking need to be cleared?
Can installation take place outside peak operating periods?
Will temporary heating be required?
When must the system be fully commissioned?
Who will coordinate access, permits and site safety?

Planning these details early reduces disruption and gives the contractor a realistic programme. Starting before peak winter demand also improves the likelihood that surveys, procurement and installation can be completed at the right time.

8. Arrange a warehouse heating survey before setting the final budget

A budget based on incomplete information can lead to unsuitable equipment, missed installation costs or poor control of the finished system. A detailed survey should establish the following before the final design and quotation are approved:

Required internal and minimum stock temperatures
Occupied zones and shift patterns
Building heat loss and air leakage
Door-opening and ventilation patterns
Available fuel and electrical capacity
Suitable positions for heaters and controls
Access for installation and maintenance
Future layout or use changes
Programme, operational constraints and winter deadline

This gives operators a clear, practical basis for comparing quotations and helps ensure the chosen system meets the actual commercial requirement.

Warehouse heating checklist for winter planning

Record the warehouse dimensions and ceiling height
Identify occupied areas and temperature-sensitive stock
List loading door sizes and opening patterns
Review current energy and maintenance records
Confirm available gas, LPG and electrical supplies
Note shift patterns and seasonal peaks
Identify planned changes to layout or use
Arrange a site survey before winter demand limits equipment and installation availability

Frequently asked questions

Is radiant or warm air heating better for a warehouse?

Neither is automatically better. Warm air can suit open buildings where most of the air volume needs heating, while radiant systems can be effective for high spaces or defined working zones. The correct choice depends on occupancy, layout, heat loss, door activity and the required temperature.

Can one system heat an entire warehouse?

Yes, in some buildings. In larger or mixed-use warehouses, separate zones or a combination of technologies may provide better control and flexibility than one uniform system.

How can heat loss through loading doors be reduced?

The solution may include improved door management, air curtains, local zoning, suitable controls and changes to operating practice. The right measures depend on the door size, opening frequency and activities around the loading area.

Should an older warehouse heater be repaired or replaced?

Consider its age, reliability, repair frequency, parts availability, current running cost and whether it still suits the way the building is used. A survey can compare the cost and risk of continued repairs with a planned replacement.

Choose a system based on how your warehouse operates

The best warehouse heating system is the one designed around the building’s real operating conditions. Starting early gives operators time to assess heat loss, define occupied zones, compare suitable technologies and plan installation without unnecessary winter disruption. Independent Heating & Cooling has delivered commercial and industrial heating projects since 1987, including large-scale warehouse systems. To discuss a new installation, replacement or winter-readiness survey, contact IHC about a warehouse heating survey.