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Summer heat is here, and my home cooling system is on. A few years ago, my family swapped out window air conditioners for a mini-split heat pump system that’s more efficient. But many people either rent their homes or don’t have the money to spend up front to install a system like that.
Smaller, window-mounted heat pumps are now becoming available in the U.S., so I asked Moncef Krarti, a scholar of energy efficiency at the University of Colorado Boulder, to explain what they are, how they work and how their efficiency differs from both whole-home heat pump systems and traditional window air conditioners.
He lays out the similarities and differences, and points out some key factors to consider if you’re thinking about buying one of these units, which could help you keep your home cooler in the summer – and warmer in the winter – for less money than you might be spending now.
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Many U.S. apartments have individual heating and cooling systems that are less efficient than current technology.
Spencer Platt/Getty Images
Moncef Krarti, University of Colorado Boulder
Permanently installing a heat pump system in a building is expensive. But new window units can deliver many of the benefits with far less cost and go with renters when they move.
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Education
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W. Ian O'Byrne, College of Charleston
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Economy + Business
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