A well-installed warmth pump would possibly get three kilowatt hours (kWh) of warmth for every kWh of electrical energy it consumes. This ratio is named the coefficient of efficiency, or COP – the upper it’s, the higher. Warmth pump-watchers have a tendency to make use of this determine as a method of judging how nicely their gadget is working, generally in pleasant competitors with different warmth pump homeowners.