Start your air conditioner earlier on a hot day

If you know that it’s going to be a very hot day, you can start the air-conditioning slightly earlier while the air is still cooler.

Chilling cooler air uses less energy than cooling it at a later time when it’s hotter. This gives you a head start on cooling your workplace on hot days.

You can do this manually or you can set your system timer to come on earlier just before people come to work.

This approach should only be used on exceptionally hot days. During regular weather, at the start of the day you should turn on your air-conditioning as late as possible.