How much does air conditioning cost to run in Glasgow?

Running cost depends on the unit's electrical input, how hard it is working, the temperature set point, room heat gain, insulation and electricity tariff. A modern inverter system does not simply run at full power continuously; once the room approaches the target temperature, it can reduce output.

For cooling, setting an unnecessarily low temperature increases energy use. For heating, the unit operates as a heat pump and can deliver more heat energy than the electrical energy it consumes, but actual efficiency varies with outdoor conditions and the system itself.

The best estimate for a Glasgow room comes from selecting the correct capacity first, then using the manufacturer's seasonal efficiency data alongside your electricity rate. Doherty's air-conditioning survey can help avoid oversizing or poor positioning that makes a system work harder than necessary.