Where a split system cannot be installed - rented premises, temporary sites, or a cabinet added after the room was built - a portable spot cooler is the fastest way to remove heat from IT and electrical equipment.
Electrical equipment converts almost all of its input power into heat, so the load is calculated directly from the power draw:
Add a margin of 20-30 % for solar gain through windows, lighting, people and duct losses, then round up to the nearest available capacity.
| Installation | Typical IT / electrical load | Suggested capacity |
|---|---|---|
| Wall-mounted comms cabinet | 0.5 - 1.5 kW | 4,000 - 7,000 BTU |
| Small rack (1-3 racks) | 2 - 4 kW | 12,000 - 18,000 BTU |
| Server room / switchgear room | 5 - 8 kW | 24,000 - 30,000 BTU |
A spot cooler is only as good as the air path. Point the supply louvre at the intake of the equipment, or use a cold-air duct kit to deliver air to the front of a rack. Avoid blowing cold air at the ceiling or into a corner, where it will short-cycle back into the unit.
Dehumidification produces water continuously. For a cabinet or a short-term job the internal tank is usually enough. For round-the-clock duty, specify a condensate pump or a gravity drain hose so the unit does not stop on a full tank.
Units used in this way run for long periods, so washable or replaceable filters and a serviceable coil matter more than in domestic use.
Many operators buy a spot cooler purely as standby capacity: it sits unused until the primary air conditioning fails, then holds the room within limits while a repair is arranged. For that duty look for auto-restart after power failure, a permanent drain connection and controls that any member of staff can operate.
Send us the capacity, market and volume you have in mind and we will reply with models, MOQ and lead time.
For small and mid-size loads, yes. A portable spot cooler handles a comms cabinet or a small rack room well. Once the load goes beyond roughly 8-10 kW a dedicated precision cooling system is the right answer, and the portable unit becomes the standby.
Multiply the equipment wattage by 3.412 to get BTU/h, then add a 20-30 % margin. A 3 kW rack therefore needs roughly 12,000-14,000 BTU of cooling.
The internal tank is fine for short jobs. For continuous operation choose the condensate pump or gravity-drain option so the unit does not shut down when the tank fills.
Yes. The models used for this application are built for long-duty operation, though the filters should be cleaned at the interval given in the manual and the coil serviced periodically.
Yes. A cold-air duct kit lets you deliver air from the supply louvre directly to the front of the rack, which is far more effective than cooling the whole room.
