Seattle's combination of mild winters and increasingly hot smoke-affected summers makes heat pumps the right answer for almost every home considering a furnace replacement.
The math:
- PSE rebate $1,200 instant
- Federal IRA tax credit Up to $2,000
- Operating cost savings Typically $400 to $600/yr vs gas (PSE rates, average Seattle home)
- AC included No separate $5,000 to $7,000 cooling system needed (more critical now during smoke season)
For a 2,200 sq ft Seattle craftsman replacing a 1998 gas furnace, the 10-year net cost picture favors a heat pump by about $4,000 to $7,000 after stacking rebates, credits, and operating cost savings. That gap widens for homes in west-facing locations where summer cooling matters more.
The exception: homes with active knob-and-tube wiring that can't safely support the new load. In those cases we rewire first, then install the heat pump.