Title: Thermal Energy: Heat pumps fill in the blanks

Fill in the missing words

Q: The [...] of heat pumps can be measured with 2 different metrics.

The [...] is a measure of efficiency - essentially the ratio between [...] work (useful heat) to [...] work (electrical energy).

The [...] is a measure of the annual performance of a heat pump. This is a ratio between the annual [...] output and annual amount of [...] consumed which varies throughout the year.
A: performance; coefficient of performance/COP; output; input; seasonal performance factor/SPF; heat; electricity