What is this Heating Seasonal Performance Factor (HSPF) Anyway? 
When you see a heat pump rated at 9 HSPF, that means it puts out 9 BTU/hr. for every watt hour it consumes.

One k.w. hour is 1,000 watt hours. So, a 9 HSPF heat pump puts out 9 BTUs x 1,000 watt hours = 9,000 BTUs an hour for each k.w. consumed.

One k.w. of straight electric heat puts out 3,410 BTUs per k.w.

To find the coefficient of performance (C.O.P.) of the 9 HSPF heat pump vs straight electric heat, divide 9,000 BTU by 3,410 BTU = 2.64 C.O.P. for the heat pump.

The heat pump is giving you 2.64 times more heat using 1 k.w. than electric heat using 1 k.w. 

If you have any questions, please do not hesitate to call me. Send Bruce your operating statement! brucemartin@virginiaair.com
 
Thanks for all you do and as always “Expect More From Us”!
 
Thanks,
Bruce Martin
Dealer Business Consultant
Value Added Distributors
(757) 469-1205