What is HSPF?

Many people are very confused with the parameter “HSPF” when purchasing the heat pumps. Me too. After some research, I got some basic information.

HSPF is the short name of Heating Seasonal Performance Factor, a little complicated, right?

To be simple, the higher HSPF is, the better the heat pump is, or the more energy efficient. HSPF is just one parameter to check how the heat pump works.

The minimum HSPF allowed for a residential heat pump is 6.8.

Usually, the HSPF above 8.0 is OK, which can be considered high efficiency.

Therefore, what you know at least is to choose the heat pump with the HSPF more than 8.0 when purchasing online or in the local store. 

The higher, the better.