Renton's pre-1990 housing stock is overwhelmingly on original 100A panels. Most heat pump installs here run as combined HVAC + electrical projects: panel upgrade, heat pump install, sometimes EV charger prep all on the same permit.
The math:
- PSE rebate $1,200 instant — Renton is fully PSE
- Federal IRA tax credit Up to $2,000
- Operating cost savings $400 to $600/yr vs gas (PSE rates)
- Panel upgrade bundled One permit, one crew, one project for HVAC + electrical
For a 2,000 sq ft Talbot split-level replacing a 1995 gas furnace, the 10-year net cost picture favors a heat pump by about $5,000 to $8,000 — even factoring the panel upgrade — because the upgrade unlocks future EV charging and any electrification work.
The exception: Kennydale waterfront homes need marine-grade equipment which adds $400 to $700 to the install.