The answer
Why is the meeting room hot when the rest of the office is comfortable?
A meeting room's load can change quickly when people and laptops arrive, while sun through its windows adds heat at particular hours. The room may need its own cooling control and a fresh-air check; a system sized from average office floor area can miss both. Find out whether the complaint is heat, stale air, draughts—or a combination—before buying more capacity.
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Describe a busy hour, not an average day
Record how many people use the room at once, how many screens or other devices run and which windows receive afternoon sun. Compare that with the time when complaints occur. The same room may need little cooling when empty but considerable cooling during a full meeting; sizing it from floor area or a quiet survey visit can miss the peak.
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Temperature does not tell you whether the air is fresh
Many room air conditioners recirculate air. The Health and Safety Executive says enclosed workplaces need adequate fresh or purified air. If the room feels stuffy when occupied, examine windows, mechanical supply and extract as well as temperature. Adding a larger cooling unit alone may leave the ventilation problem unchanged.
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Controls and placement affect comfort
A cold jet aimed at desks can make one group uncomfortable while the far side of the room stays warm. A sensor in direct sun or the unit's discharge can misread the room. Agree the indoor-unit position, sensor location and booking-hour control strategy. Show condensate drainage and service access too, so a neat-looking fit-out does not become a maintenance problem.
How would you brief a designer about the hot room?
Give the surveyor a normal booking week and an example of the fullest meeting. Note when the sun reaches the room, whether blinds are used, where laptops and screens sit and how quickly people complain after arriving. Ask the designer to distinguish a short peak load from the continuous load during ordinary office use. That helps avoid overcooling the room for most of the week to solve one busy hour.
Ask a separate question about air quality. Is outdoor air supplied mechanically, through windows or not reliably at all? A recirculating split unit can reduce temperature while the room remains stuffy. The Health and Safety Executive's workplace ventilation guidance is relevant even if the proposed equipment is mainly being sold as a comfort measure.
The final layout should show supply-air direction, sensor location, the drain and how a technician will clean and service the indoor unit. If a quick win such as solar shading or a control adjustment could reduce the complaint, consider it alongside new equipment. That is a more useful answer than simply fitting the largest unit the wall can take.
What to check next
Your next steps
Where we checked the facts
Check the original information.
These official pages back up the rules and technical details above. They can change, so check them again before spending money or starting work.
Apply this to your own property
Which rooms could you heat or cool?
A free survey checks the rooms you want to heat or cool, equipment positions and what may fit your property.