Thanks for chiming in with additional info, still trying to learn more about heat pumps as this is something I’ve been installing more of as an electrician.

Living in the northeast US it says natural gas is my best opinion. So at what temperature range does the heat pump become the better option?

I cannot believe I’m hearing people recommend electric heat pumps. It would cost me more to heat my house with electric than gas so I’m sticking to gas.

Please check my math based on my last bill.

Used 77 therms of gas @ .5948 per therm for a total of $45.81

77 therms is = to 2256 kWh?

I pay .0673 per kWh

2256 kWh x .0673 is $164.68

Now include an efficiency increase going from %82 to %100

Is $135.04 for last month

Please anyone double check this.