[Windguy]

Choosing an efficient air conditioner

A new innovation in air conditioner technology is the use of an inverter or variable speed drive in the motor system that drives the compressor. While these systems tend to look less efficient at full load (ie their star rating at rated capacity is not always as high as conventional air conditioners), they tend to be very efficient at part load operation, which is a more common mode in a typical household. So if you are likely to use an air conditioner for long periods because you live in a hot climate, it may be worth considering an inverter system. They are, however, more expensive to buy, as a rule.