Programmable thermostats can cut heating and cooling costs by as much as 20 percent if used properly. So it was rather surprising to read the EPA is suspending its Energy Star specifications for programmable thermostats effective December 31, 2009. In a letter to manufacturers, the EPA argues that even the best programmable thermostat won’t save energy if not used properly and it’s impossible to distinguish between an Energy Star qualified model and a non-qualified one. The EPA would rather direct efforts toward educating the public on the correct use of programmable thermostats to save money. You can get started by watching our how-to video on installing one in your home.

Credit: EPA Letter to Thermostat Manufacturers