Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • NATE-certified technicians • Carrier Factory Authorized Dealer
Heat pump installation in Issaquah, WA
A heat pump heats and cools your home with one system by moving heat rather than burning fuel. Home Comfort Alliance installs, repairs and maintains ducted, ductless and dual-fuel heat pumps in Issaquah from our Redmond branch. Call (425) 645-0404 for a free installation estimate.
Issaquah homeowners have an unusual advantage: the city is part of Energy Smart Eastside, a heat pump campaign it runs with Bellevue, Kirkland, Mercer Island, Redmond and Sammamish (Energy Smart Eastside, heat pump incentives). Combined with Puget Sound Energy rebates, it can take a meaningful share off the cost of switching. Home Comfort Alliance is an Energy Smart Eastside approved contractor and a PSE Trade Ally.
Energy Smart Eastside incentives (September 2026)
- $1,000 rebate for homeowners who buy a qualifying Mitsubishi, Bryant/Carrier or Day & Night heat pump, ducted or ductless, installed by an approved contractor.
- Up to $5,000 bonus for moderate-income households earning below 150% of area median income, for a fully electric system with no furnace backup. That brings the program total to as much as $6,000.
- Hybrid systems (a heat pump paired with a gas furnace) qualify for the $1,000 rebate only.
- Rebate codes are valid for up to 90 days, so the timing of the install matters.
Source: Energy Smart Eastside, heat pump incentives. The City of Issaquah describes the steps as signing up, attending a virtual workshop and having your home assessed before installation (City of Issaquah, Energy Smart Eastside). We can guide you through each step.
PSE rebates
- Electric heat to heat pump: $1,500 when a heat pump replaces electric baseboards, wall heaters or an electric furnace, plus up to $2,400 through Efficiency Boost for income-qualified households (PSE electric resistance to heat pump rebate).
- Hybrid heat pump: $1,500 for PSE gas customers who add a heat pump to a gas furnace, plus up to $2,400 through Efficiency Boost (PSE hybrid heat pump rebate).
Which combination of Energy Smart Eastside and PSE incentives applies depends on your current heat, equipment brand and household income. We check eligibility for your address before you commit. PSE heating rebates require a PSE Trade Ally or registered installer, and several programs have application windows after installation, so we track the paperwork and deadlines as part of the job rather than leaving them to you.
What a heat pump costs
Seattle-area estimates before incentives, from Angi, Seattle heat pump installation costs, updated July 2026 and Angi, Seattle mini-split costs, 2026 data. Not our prices.
| System | Installed cost range |
|---|---|
| Standard efficiency, ducted | $3,160 to $6,670 |
| High efficiency, ducted | $6,670 to $13,850 |
| Premium efficiency, ducted | $13,850 to $20,000 |
| Seattle-area average, ducted | About $10,218 |
| Ductless mini-split, single zone | $2,222 to $5,555 |
Get a free estimateAn in-home visit and a written, upfront price before any work begins.
Choosing the right setup
Your current heating decides the most sensible path:
| Current heat | Recommended setup | Incentives that may apply |
|---|---|---|
| Electric baseboards | Ductless mini-split, several zones | Energy Smart Eastside; PSE electric heat conversion |
| Electric furnace with ducts | Ducted heat pump and air handler | Energy Smart Eastside; PSE electric heat conversion |
| PSE gas furnace, keeping it | Dual fuel (hybrid) | Energy Smart Eastside $1,000; PSE hybrid |
| PSE gas furnace, going all-electric | Ducted heat pump, electric backup | Energy Smart Eastside, including bonus if income-qualified |
The Energy Smart Eastside bonus requires a fully electric system with no furnace backup, so households that qualify for it should weigh going all-electric carefully with us.
Ducted or ductless?
Both are heat pumps; the difference is how conditioned air reaches the rooms.
- Ducted systems use your existing ductwork and a central air handler. Only vents and a thermostat show inside. They suit homes that already have ducts in good condition, and they filter the whole house through one filter.
- Ductless systems put a wall, ceiling or floor unit in each zone, connected to the outdoor unit by a small line set. They suit homes heated by baseboards, additions and bonus rooms, and they let each room run at its own temperature.
- Mixed setups are common: a ducted system for the main floors and a ductless head for the room the ducts never reached.
For Issaquah’s many multi-level homes, a ducted system can be zoned, or a second small system added for the upper floor, rather than oversizing one unit to cover everything.
Heat pump water heaters
If your water heater is near the end of its life, consider replacing it with a heat pump water heater at the same time. It uses much less electricity than a standard electric tank, and PSE offers $1,000, or $1,100 with Efficiency Boost, on qualifying models (PSE heat pump water heater rebate). Planning both together lets our electricians size the panel work once. Our Issaquah plumbing page covers water heater options.
Is a heat pump right for your home?
A heat pump is usually a strong fit when you heat with electric resistance, want to add cooling, or are replacing an old AC anyway. It needs a closer look when the ductwork is undersized or leaky, when the panel is at capacity, or when you plan to keep an efficient gas furnace for years. We give a straight answer at the estimate, including when a furnace repair or a dual-fuel setup makes more sense than going all-electric.
Performance in cold weather
Variable-speed heat pumps keep heating well below freezing, though output drops as temperatures fall. We size for your home’s heat loss at design temperature and plan backup heat accordingly: electric strips in all-electric systems, or the gas furnace in dual-fuel systems. We also set the thermostat so modest setbacks do not call for backup heat every morning, which protects the savings.
Electrical capacity
A heat pump needs a 240-volt circuit and disconnect; an all-electric system with backup strips needs more capacity still. Before quoting, our electricians check the panel with a load calculation and recommend load management, a subpanel or a service upgrade only when needed. This matters most for households going fully electric for the Energy Smart Eastside bonus.
Installation day
Issaquah generally requires a mechanical permit from the City of Issaquah Permit Center for heat pump installs, plus an L&I electrical permit for new wiring (City of Issaquah, Do I Need a Permit?; City of Issaquah, electrical permits). We file both. A ducted install usually takes one to two days, a single-zone ductless system about a day. Before leaving, we pressure-test and evacuate the lines, verify charge and airflow, set up the thermostat, and walk you through filters and settings.
Service and repair
Already have a heat pump? We repair and maintain ducted and ductless heat pumps, including capacitors, contactors, refrigerant leaks, defrost controls, reversing valves, fan motors and ductless drain lines. Because heat pumps run in both seasons, schedule a fall check before heating season and, if you rely on cooling, a spring check too. Between visits, keep filters clean and keep two feet of clearance around the outdoor unit, trimming back shrubs and clearing needles and moss after storms.
Warranty and Home Comfort Club
We support the manufacturer’s warranty on covered equipment parts, and we stand behind our heat pump installations with a 1-year labor warranty from installation.
Join our Home Comfort Club, a monthly membership starting at $15 a month, and a new system we install gets extended labor coverage for as long as your membership stays active, up to 5 years from installation. Ask your technician or comfort advisor for the current plan details.
Issaquah heat pump FAQ
What is Energy Smart Eastside?
A heat pump campaign run by Issaquah with Bellevue, Kirkland, Mercer Island, Redmond and Sammamish. It offers a $1,000 rebate on qualifying heat pumps installed by approved contractors, plus a bonus of up to $5,000 for moderate-income households going fully electric.
Is Home Comfort Alliance an approved Energy Smart Eastside contractor?
Yes. We are an approved contractor and a PSE Trade Ally for HVAC.
Which heat pump brands qualify for Energy Smart Eastside?
Mitsubishi, Bryant/Carrier and Day & Night, ducted or ductless.
Can I combine Energy Smart Eastside with PSE rebates?
That depends on your current heat, equipment and income. We check which incentives apply to your project before you commit.
How much does a heat pump cost in Issaquah?
Seattle-area data puts ducted heat pumps between about $3,160 and $20,000 depending on efficiency, averaging about $10,218, before incentives (Angi, July 2026).
Do I need a permit for a heat pump in Issaquah?
Generally yes: a City of Issaquah mechanical permit and an L&I electrical permit. We handle both.
What warranty comes with your work?
We support the manufacturer’s warranty on covered equipment parts, and our labor warranty covers installations for 1 year from installation. Home Comfort Club members (monthly membership starting at $15 a month) with a new system installed by Home Comfort Alliance get extended labor coverage for as long as their membership stays active, up to 5 years from installation.
Why Choose Home Comfort Alliance in Issaquah?
Your Comfort is Our Promise
We promise...
Reliable heating, air conditioning, plumbing and electrical service, all from one trusted company.
To educate and guide you through your options so you’ll find the right solution at the right price.
Knowledgeable and respectful workers who ensure both your own comfort during the installation process, and lasting comfort from your home systems.
Outstanding service, communication, and follow-up, so your home is comfortable now and for years to come.
Get a heat pump estimate in Issaquah
A Redmond-based comfort advisor will size the system, confirm your Energy Smart Eastside and PSE incentives and give you written options with financing.
Get an estimate
A Redmond-based comfort advisor will call you to set up your visit.