If my math checks out (which is doubtful) then yes, heat pump could be more expensive than gas heat on the worst cold days like last week (10F). However, a heat

If my math checks out (which is doubtful) then yes, heat pump could be more expensive than gas heat on the worst cold days like last week (10F). However, a heat pump handles heating and cooling. So it’s cheaper to install 1 system that does everything rather than 2 systems to save money on a few cold days. Add a few solar panels and the heat pump cost goes to 0. However, we put in a gas combi-boiler for hot water. Since we were renovating a townhouse, it was easy to throw in some radiant heaters on all floors. It’s a quiet, comfortable heat. I have the heat pump set to assist if the temps drop below 68F inside. All that said, insulation and air sealing is by far the most important thing to do first. FYI: I checked the specs on my unit. It claims a 3.3X COP. So that’s $3 per therm, same as gas.