Sammamish's housing stock skews newer and larger than most Eastside cities. Average home size pushes us into 4-ton and 5-ton heat pump territory, which means premium equipment and higher install scope.
The math:
- PSE rebate $1,200 instant — Sammamish is fully PSE territory
- Federal IRA tax credit Up to $2,000
- Operating cost savings $500 to $800/yr on larger plateau homes
- AC included Critical for west-facing plateau homes during summer heat domes
For a 3,200 sq ft Klahanie home replacing a 2001 gas furnace, the 10-year net cost picture favors a heat pump by about $6,000 to $9,000 after rebates and operating savings. Larger homes get bigger operating savings.
The plateau is also more wind-exposed than the lowlands, so backup generator pairing is more common here. We bundle the panel work for both at once.