Can domestic air conditioning heat a home in Glasgow?

Yes. Many modern domestic split systems are air-to-air heat pumps, meaning the same unit can reverse its cycle and provide heating as well as cooling. This can be useful for individual rooms such as home offices, bedrooms, lofts or garden rooms.

It does not automatically mean one wall unit should replace the entire existing central-heating system. The heating capacity, outdoor temperature performance, room heat loss and where indoor units are positioned all matter. A system designed for one bedroom should not be assumed to heat several closed rooms elsewhere in the house.

Doherty's Glasgow air-conditioning service specifically covers both cooling and heat-pump heating. The correct approach is to size each proposed system around the room rather than choosing equipment only by the floor area figure on a product listing.