Heat Pump Installation in Seattle, WA

A ducted heat pump installation in Seattle typically costs $13,800 - $21,600, depending on your home's size, existing ductwork condition, and the equipment tier you choose. We offer Good, Better, and Best options from Day & Night, Carrier, and American Standard. Seattle's Clean Heat program rebates can significantly reduce your out-of-pocket cost. We provide free in-home estimates with transparent pricing — no hidden fees or pressure tactics.

Yes. The mechanical permit is issued by Seattle Department of Construction & Inspections (SDCI), and Washington State requires one for this work. We handle the whole thing — application, fee, and meeting the inspector for the final — so you never contact the permit desk yourself. In Seattle, exterior equipment may additionally need sign-off from the Seattle Landmarks Preservation Board and the neighborhood historic districts (Ballard Avenue, Columbia City, Pioneer Square, Harvard-Belmont), which we factor into placement before we quote. Every install meets or exceeds the current Washington State mechanical and energy codes.

Most ducted heat pump installations in Seattle are completed in a single day. Our crew arrives in the morning, removes the existing furnace, installs the new indoor air handler and outdoor condenser unit, connects refrigerant lines, and commissions the system by afternoon. Complex installations involving ductwork modifications may extend to a second day, but we will communicate the timeline clearly before work begins.

Absolutely. Seattle's Pacific Northwest climate is ideal for heat pump operation. The marine-moderated temperatures along the Puget Sound waterfront keep winter lows mild, allowing heat pumps to operate at peak efficiency. The Day & Night and Carrier systems we install maintain heating efficiency down to well below freezing. Heat pumps also provide cooling during summer — increasingly important as Seattle summers get warmer.

Yes, for Seattle properties near the Puget Sound waterfront, we recommend coastal-rated heat pumps with BlueFin or Gold Fin corrosion-resistant coil treatments. Salt air accelerates wear on outdoor condenser coils and refrigerant lines, so proper equipment selection is essential. We also recommend semi-annual maintenance instead of annual service for coastal properties to keep condenser coils clean and extend equipment life. This proactive approach protects your investment and maintains peak efficiency.

Seattle is served by Seattle City Light, so the program that applies to your home is Seattle's Clean Heat program: a $2,000 instant rebate for oil-to-heat-pump conversions on qualifying equipment, plus up to $4,000 more for moderate-income households (81–150% AMI) on installs completed by Sept 30, 2026. Rebate programs change, and eligibility turns on your existing heating system, the equipment's efficiency rating and sometimes your household income — we confirm what you actually qualify for before it goes in your quote, and we file the paperwork after the install. The federal 25C tax credit expired on December 31, 2025, so do not budget around it.

The Washington State Energy Code lists Seattle at a 24°F winter design temperature (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between equipment that carries the house on its own and equipment that leans on expensive backup heat every cold snap. A cold-climate heat pump holds its rated capacity well below that, which is why heat pumps genuinely work here rather than being a compromise. Gas here comes from Puget Sound Energy, and for some homes a hybrid — heat pump for most of the year, gas furnace for the coldest mornings — is the right answer. We will tell you if it is.