Commercial
Conditioning a warehouse is a different trade from conditioning an office. Anyone who tells you otherwise has not had to cool one. The volumes are enormous. The heat behaves strangely because of the sheer height. The doors are the size of lorries. The thing you are protecting is often stock and machinery rather than people. Treat it like a big office and you will spend a fortune to achieve very little.
Air Con North has designed supplied installed and maintained climate systems for warehouses and industrial units across the North-East of England for more than 25 years, on sites around Newcastle Sunderland Gateshead Middlesbrough and beyond. This guide covers how we approach these big demanding spaces and the choices that actually matter. In a building this size the wrong call is an expensive one to live with.
The problem of volume
A warehouse is mostly air. That air is expensive to do anything to. The floor area can be large but it is the height that really bites, because you are conditioning a volume that dwarfs anything in a normal building. Cool the whole space to office comfort and you are paying to condition a vast amount of air that no person ever occupies, most of it up near the roof where nobody works and nothing is stored.
So the first and most important question is not what system to fit. It is what you are actually trying to achieve. Are you keeping people comfortable at workstations? Are you holding stock within a temperature band? Are you protecting sensitive machinery from heat and damp? The honest answer usually points away from cooling the whole volume and towards something far more targeted. That is good news, because targeted is also a great deal cheaper.
Spot cooling versus whole-space
For most industrial units the sensible approach is to condition where it counts rather than everywhere. There is a world of difference in both cost and results between the two.
- Spot cooling. Where people work in defined areas, a packing bench a dispatch desk a quality station, we cool those zones directly rather than the whole shed. The staff get genuine relief. You are not trying to cool the entire volume just to reach a handful of people.
- Whole-space conditioning. Some operations genuinely need the entire space held within a band, often to protect temperature-sensitive stock. That is a bigger undertaking and we would specify it only where the goods or the process truly demand it.
Getting this decision right is where the big money is won or lost. We would far rather tell you that you need targeted cooling for a few work areas than sell you a system to condition a volume that does not need it. An oversized warehouse system is a mistake you pay for every single month it runs.
Evaporative cooling is worth a mention here, because it suits some industrial spaces well. Rather than a refrigerant system it cools incoming air by passing it over water, drawing in large volumes of fresh cooled air at a modest running cost. In the right building, where there is plenty of fresh air movement and the humidity is not a problem, it can take the edge off a hot shop floor far more cheaply than trying to refrigerate the whole volume. It is not the answer for a space that needs tight temperature control, but for keeping people comfortable on a warm day it is often the sensible choice. We will tell you honestly where it fits and where it does not.
Destratification
Warm air rises. In a tall building that creates a serious problem. The heat you pay for collects up near the roof, metres above anyone’s head, while the people on the floor still feel cold. You end up heating the roof space while the staff stay unhappy, which is close to the worst of both worlds and a pure waste of fuel.
Destratification fans gently push that trapped warm air back down to floor level where it is useful. In a tall heated warehouse this is one of the most cost-effective measures there is, because you are simply making use of heat you have already paid to produce. The same stratification affects your cooling strategy too. Understanding how air layers in your particular building is central to designing anything that works. We always factor it in rather than treating the space as if the air were evenly mixed from floor to roof. In a warehouse it never is.
Heating big spaces efficiently
In our climate heating a large industrial unit is often the bigger challenge than cooling it. A cold warehouse is miserable to work in as well as being hard on the stock. The inefficient way is to try to warm all that air with a conventional approach, fighting a losing battle against the volume and the big doors that swallow heat every time they open.
There are better options. Modern heat pump systems deliver heating efficiently and can cool the same zones in summer from the same kit, which suits a building that needs both across the year. Radiant heating warms the people and the surfaces directly rather than trying to heat the whole mass of air. In a high draughty space that is often far more effective and far cheaper to run. The right answer depends on the building and how it is used, which is exactly why we survey before we specify rather than reaching for a standard solution off the shelf.
Protecting stock and machinery
In many industrial units the climate is not about human comfort at all. It is about the goods or the equipment. Stored product can degrade if it gets too warm too cold or too humid. Electronics and precision machinery have operating ranges they need to stay within. Condensation forming on cold metal causes corrosion and faults that can be far more expensive than any energy bill.
For these jobs the design is driven by the specification of what you are protecting rather than by comfort. That often means controlling humidity as well as temperature, holding conditions steady rather than just keeping them pleasant for an hour. Because we handle commercial refrigeration alongside air conditioning, we can take on the whole brief where you are storing genuinely temperature-critical goods, from a controlled ambient right through to proper cold storage, under one plan and one point of contact rather than juggling two separate trades.
Condensation and humidity
Humidity is the quiet troublemaker in a lot of industrial units. A large uninsulated building that cools off overnight then warms through the day will see condensation form on cold surfaces. That moisture is bad news. It rusts steelwork. It drips onto stock. It shortens the life of electronics and it can ruin packaging and labels before the goods ever leave the door. Temperature alone does not solve it, because the real problem is moisture in the air meeting a cold surface.
Controlling humidity is a job in its own right. Dehumidification, good ventilation and holding the space at a steady temperature all play a part. The right mix depends on what you store and how the building behaves through the day. Where damp is causing damage we look at the whole picture rather than just reaching for more cooling, because cooling a humid space can sometimes make condensation worse rather than better. A building that holds steady conditions protects what is inside it far better than one that swings between warm and cold with every change in the weather.
Roof-mounted and ducted options
Where the floor is full of racking and machinery there is often nowhere sensible to put plant at low level. So for larger spaces we commonly look upward and outward. The building itself usually tells us where the kit wants to go.
- Roof-mounted units. Packaged plant on the roof keeps the equipment out of the working space entirely and makes good use of a part of the building that is otherwise dead.
- Ducted distribution. Ductwork carries conditioned air to where it is needed and lets us direct it at the working zones rather than dumping it randomly into the volume.
- High-level units. Mounted up out of the way, these clear the floor and the racking while still reaching the areas that matter.
The right mix depends on your building and the layout of racking doors and operations within it, which is why nothing beats seeing the site and walking the floor with the people who actually use it every day.
Access for maintenance deserves a thought at the design stage rather than after the fact. Plant that is mounted high up or on the roof still has to be reached for servicing, so we think about safe access from the start. Kit that cannot be got at easily tends to go unserviced, which is how a small fault turns into a big one. Where equipment sits at height we plan the access so a routine visit is a straightforward job rather than a half-day production with towers and permits. A system that is easy to look after is a system that actually gets looked after. In a warehouse that is half the battle won.
Ventilation
Ventilation is easy to overlook in a warehouse and expensive to get wrong. Processes give off heat fumes and dust. Forklift movements and loading stir the air. Workplace air quality is a genuine duty under health and safety expectations rather than an optional extra. Good ventilation clears contaminants, manages the build-up of heat from equipment and keeps the air fit to work in. That is the first job before comfort even enters the conversation.
It also interacts with everything else. Big roller doors standing open change the air balance of the whole building in an instant. Any conditioning strategy has to account for the reality of how those doors are used through a working day rather than pretending they stay shut. We design the ventilation and the conditioning together, because in a space this size they are two halves of one problem. Solving one while ignoring the other leads nowhere good.
Loading bays and dock doors
The loading bay is where a warehouse leaks hardest. Every time a dock door rolls up the conditioned air inside meets the weather outside. On a cold wet North-East morning that is a serious loss. Lorries come and go all day, so a door that is open for a few minutes at a time quickly adds up to hours. Try to hold a tight climate right up to an open dock and you are pouring money onto the yard.
The sensible approach is to treat the loading area as its own zone rather than part of the main conditioned space. Dock shelters and seals around the trailers cut the gap down to something manageable. Fast-acting doors that open and close quickly rather than standing wide reduce the time the building is exposed. High-level air curtains over the larger openings hold back some of what would otherwise escape. Where people work the bays all shift, spot heating keeps them comfortable without trying to warm the whole exposed area. We look at how your loading operation actually runs, how often the doors open and how long they stay up, then design around that reality rather than an idealised building where nothing ever moves in or out.
Talk to Air Con North
Warehouses and industrial units reward getting the strategy right. They punish getting it wrong. The only way to get it right is to see the building and understand the operation inside it. We will walk the site, work out whether you need targeted cooling destratification better heating or climate control for your stock then set out a system that fits the job without conditioning air nobody uses. Call Air Con North free on 0800 246 5430 for a no-obligation survey and quote. We will give you a straight plan for your space.
