Northern King County is one of the best places in Washington State to install a heat pump. The mild Pacific Northwest climate, Puget Sound Energy's rebate program, and the federal Inflation Reduction Act tax credits combine to make heat pumps both practical and financially attractive for homeowners in Kenmore, Bothell, Woodinville, and Kirkland.

Here is everything you need to know before making the switch.

Why Heat Pumps Work So Well in Northern King County

Heat pumps move heat rather than generate it, which makes them two to four times more efficient than resistance heating. In cold climates, this efficiency advantage shrinks — but in the Pacific Northwest, it stays strong almost year-round.

Northern King County's climate is ideal for heat pumps for several reasons:

Mild winters. Average winter temperatures in Kenmore and Kirkland rarely drop below 30°F. Heat pumps operate at peak efficiency in this range. Even on the coldest nights, a modern cold-climate heat pump maintains full heating capacity.

Warm summers. Summers have gotten meaningfully warmer over the past decade. A heat pump provides both heating and cooling in one system — replacing your furnace and your AC simultaneously.

PSE electricity rates. Puget Sound Energy's electricity rates are relatively low compared to national averages, which improves the economics of running a heat pump versus burning natural gas.

PSE Rebates for King County Heat Pump Installations

Puget Sound Energy serves most of Kenmore, Bothell, Woodinville, and Kirkland. PSE customers qualify for heat pump rebates through their energy efficiency program:

System Type	PSE Rebate
Ductless mini-split heat pump	Up to $1,200
Ducted air-source heat pump	Up to $1,200
Cold-climate heat pump (NEEP rated)	Up to $1,500
Heat pump water heater	Up to $800

These rebates are processed after installation. We handle the paperwork for our customers — you don't need to navigate the PSE portal yourself.

Federal Tax Credits (IRA)

On top of PSE rebates, King County homeowners can claim federal tax credits under the Inflation Reduction Act:

• 30% of installation cost, capped at $2,000 per year for qualifying heat pumps
• Applies to ENERGY STAR certified equipment
• Claimed on IRS Form 5695 when you file your taxes
• Available through 2032

Combined with PSE rebates, total incentives can reach $3,500–$4,700 on a qualifying installation.

What Does Heat Pump Installation Cost in King County?

Installation costs vary by system type and home configuration:

Ductless mini-split (single zone): $3,500–$6,000 installed Best for: homes without ductwork, additions, garages, or supplemental heating in specific rooms.

Ductless multi-zone (2–4 rooms): $7,000–$14,000 installed Best for: homes without ductwork that need whole-home heating and cooling.

Ducted air-source heat pump: $8,000–$14,000 installed Best for: homes with existing ductwork replacing a gas furnace and/or central AC.

Cold-climate heat pump: $10,000–$16,000 installed Best for: homes in slightly colder microclimates or those wanting maximum efficiency at low temperatures.

After PSE rebates and the federal tax credit, net costs typically run:

• Mini-split: $2,300–$4,800
• Ducted system: $4,300–$10,500

Choosing the Right System for Your King County Home

The right heat pump depends on your home's existing setup:

Homes with existing ductwork

A ducted air-source heat pump is usually the most cost-effective choice. It replaces your furnace and AC in one installation, uses your existing ductwork, and qualifies for the full PSE rebate and IRA credit.

Homes without ductwork

Ductless mini-splits are the answer. They require no ductwork, can be installed in a day or two, and are highly efficient. A multi-zone system can heat and cool your entire home.

Older homes with mixed systems

Some King County homes have a gas furnace for heating but no central AC. In this case, a heat pump can replace both — or a mini-split can add cooling while the furnace handles the coldest days (a "dual-fuel" setup).

What to Expect During Installation

A typical heat pump installation in King County takes one to two days:

Day 1: Remove old equipment (if replacing), install the outdoor unit, run refrigerant lines and electrical connections.

Day 2: Install indoor unit(s), connect controls and thermostat, test the full system, and walk you through operation.

We pull all required permits and schedule inspections. The system is ready to use the same day installation is complete.

Maintenance After Installation

Heat pumps require annual maintenance to maintain efficiency and warranty coverage. Our Comfort Club membership covers annual tune-ups starting at $149/year, with priority scheduling and discounts on any repairs.

A well-maintained heat pump lasts 15–18 years. Skipping maintenance can void manufacturer warranties and reduce efficiency by 10–25% over time.

Get a Free Estimate

We serve Kenmore, Bothell, Woodinville, Kirkland, and the surrounding northern King County area. Call 425-610-6635 or request a free estimate online.

We'll assess your home, recommend the right system, and walk you through every available rebate and incentive. No pressure — just honest advice from a family-owned company that has been doing this for over 20 years.