“Window AC units have a SEER rating of 13 to 20. Central AC systems can range from 14 to 26 SEER,” said Veggeberg. Because they’re used for both heating and cooling, heat pumps have a SEER ...
An AC’s energy-efficiency features and upfront cost determine your cooling system ... options such as solar-powered water heaters. In addition to low-cost units, Ruud offers financing options ...