One way to do this is by looking out for air-conditioners that bear a five-tick rating from the National Environment Agency.

A room air conditioner can be a lifesaver when temperatures soar. Do your research before you buy so you get what's best for ...

Designing a high-performance air-conditioner doesn’t usually involve space-age technology — unless you are Mitsubishi Heavy ... distributed evenly around the room rather than patchy zones ...