A few years ago, my neighborhood went through an extended blackout, and I had to take a few ice cold showers during the cold weather, and that reminded me that I shouldn’t take hot water for granted.

Yet, most people don’t spend much time thinking about their hot water heaters. And when they break down, most of us just replace them with the same type and move on. But heating up that water is expensive—typically close to 20% of your home’s total energy footprint goes into hot water, and it’s usually the second-largest energy-related expense. That’s why you should consider a heat pump water heater—if you can make it work.

How does a heat pump water heater work?

Where traditional water heaters use gas or electricity to directly heat water, a heat pump water heater works like a reverse refr

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