3 ms·
Burning Desire for Efficiency (2012)
- kurthr 8y agoIt's worth noting that a heat pump (like the hot end of an air-conditioner) can have nominal efficiency in excess of 100%. According to the DoE heat pump based water heaters can be 2-3x as efficient as a standard gas water heater. https://www.energy.gov/energysaver/water-heating/heat-pump-water-heaters https://www.energy.gov/energysaver/water-heating/heat-pump-w...