Editorial: Surprising Turnabout at Energy Star

March/April 2007
A version of this article appears in the March/April 2007 issue of Home Energy Magazine.
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March 10, 2007
For the first time, Energy Star is decertifying an entire category of product—the programmable thermostat—because it doesn’t reliably save energy (see “Energy Star Changes Approach to Programmable Thermostats,” p. 10). Field studies in diverse climates demonstrated that homes with programmable thermostats used no less—and often more— energy than similar homes without the smart thermostats.  As a result, the programmable thermostat will no longer receive the kind of Energy Star endorsements and promotions enjoyed by efficient furnaces, TVs, and refrigerators. 

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