Ashrae 90.1 economizer requirements11/30/2023 ![]() The energy savings alone of either technology can justify a retrofit, although doing so gets complicated. To implement either system, there's a lot to be done." They're like people – no two are the same. Callan, senior vice president of consulting engineering firm Environmental Systems Design, Inc. "Energy recovery wheels and economizers go hand in hand," says David P. But that potential will be maximized depending on the status of your existing HVAC system, the climate of your location, and your building's efficiency. Economizers and energy recovery wheels are alternative energy strategies, but choosing between them isn't like flipping a coin - the two components are actually two sides of the same coin.īoth technologies have enormous potential for energy savings: economizers because they utilize outside air, and energy recovery wheels (also called "heat wheels") because they don't waste exhaust air.
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