3 ms·
As high as that is, it looks like the price of gas in SF is (relatively) even higher. $4.50 a therm per Google, or $0.15/kWh. A heat pump would only need a COP
by ericpauley 4y ago
As high as that is, it looks like the price of gas in SF is (relatively) even higher. $4.50 a therm per Google, or $0.15/kWh. A heat pump would only need a COP of 35/15=2.33 to be a better deal (very likely since it will never be that cold in SF, and you get air conditioning for the very few days you might want it).