I bought a house in Seattle in March and immediately had the old, unmaintained fossil gas (aka 'natural gas') furnace ripped out and replaced with a heat pump.

I bought a house in Seattle in March and immediately had the old, unmaintained fossil gas (aka 'natural gas') furnace ripped out and replaced with a heat pump. The heat pump worked better for warming my house from March - May than the furnace did, and has managed to make the unprecedented heat wave we experienced earlier in the summer bearable. It wasn't cheap, but a lot of HVAC companies are offering great financing deals (like 0% interest for 36 months) for the new systems.