Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • NATE-certified technicians • Carrier Factory Authorized Dealer
Heating, cooling, plumbing and electrical service in Issaquah, WA
Home Comfort Alliance repairs, maintains and installs heating and cooling systems, plumbing and electrical for Issaquah homeowners. Our Redmond branch serves Issaquah, so one call to (425) 645-0404 covers furnaces, heat pumps, ductless mini-splits, air conditioning, water heaters, drains, panels, EV chargers and generators.
Issaquah stretches from the valley along I-90 up into the foothills of the Issaquah Alps, with Lake Sammamish at its north end.
Our Issaquah HVAC, Plumbing & Electrical Services
Our Redmond-based team covers every system in your Issaquah home. Explore our Issaquah services:
Heating
Cooling
Plumbing
Electrical
Nearby, we also serve Sammamish, Bellevue, Mercer Island and Redmond.
What Issaquah homes need
Few cities in the state have grown as fast. A large share of Issaquah’s homes were built in the last few decades. Most homes therefore date from the last 30 years, in neighborhoods such as the Issaquah Highlands and the hillside developments above the valley, alongside older houses in and around Olde Town. That mix means two very different kinds of service calls:
- Newer homes (built since the 1990s): original furnaces, heat pumps, water heaters and AC units reaching the end of their service life, plus upgrades such as EV chargers and heat pump conversions.
- Older homes near Olde Town: aging supply lines and drains, smaller electrical panels, and heating systems that were replaced piecemeal over the years.
Issaquah is also wet. The city gets far more rain than Seattle, so sump pumps, drainage, crawlspace moisture and weather-sealed outdoor equipment matter here.
Where we work in Issaquah
We serve homes throughout Issaquah: Olde Town and the neighborhoods along Issaquah Creek, the Issaquah Highlands, the slopes of Cougar, Squak and Tiger mountains, and the areas along I-90 and SR 900 toward Renton. The same Redmond branch also covers Sammamish to the north, Bellevue and Mercer Island to the west, and North Bend and Snoqualmie farther east along I-90.
Issaquah rebates and incentives (updated September 2026)
Issaquah homes are served by Puget Sound Energy for electricity and natural gas. Issaquah is also one of six cities in Energy Smart Eastside, a heat pump campaign run with Bellevue, Kirkland, Mercer Island, Redmond and Sammamish (Energy Smart Eastside, heat pump incentives).
| Program | Who qualifies | Amount |
|---|---|---|
| Energy Smart Eastside | Homeowners installing a qualifying Mitsubishi, Bryant/Carrier or Day & Night heat pump through an approved contractor | $1,000; hybrid (dual-fuel) systems qualify for the $1,000 only |
| Energy Smart Eastside bonus | Moderate-income households below 150% of area median income, fully electric system with no furnace backup | Up to $5,000 more (up to $6,000 total) |
| PSE electric heat to heat pump | PSE electric customers replacing electric resistance heat | $1,500, plus up to $2,400 through Efficiency Boost |
| PSE hybrid heat pump | PSE gas customers adding a heat pump to a gas furnace | $1,500, plus up to $2,400 through Efficiency Boost |
| PSE heat pump water heater | PSE electric customers | $1,000 ($1,100 with Efficiency Boost) |
Sources: Energy Smart Eastside, heat pump incentives; PSE electric resistance to heat pump rebate; PSE hybrid heat pump rebate; PSE heat pump water heater rebate. Home Comfort Alliance is an Energy Smart Eastside approved contractor and a PSE Trade Ally for HVAC and water heaters. We check which programs your project qualifies for and handle the paperwork.
Permits in Issaquah
Plumbing, mechanical and gas work in Issaquah generally needs a permit from the City of Issaquah Permit Center (City of Issaquah, Do I Need a Permit?). Gas water heaters and appliances in single-family homes can be permitted over the counter, and an electric water heater needs a plumbing permit (City of Issaquah, mechanical permits). Electrical permits are issued by Washington L&I, not the city (City of Issaquah, electrical permits). We pull the permits for our work and schedule the inspections.
What do common services cost around Issaquah?
Published Seattle-area and national estimates, not our prices. We give a written price before any work starts.
| Service | Typical range | Source |
|---|---|---|
| Furnace repair | $139 to $544, about $341 | Angi, Seattle furnace repair costs, updated August 2026 |
| New furnace | $2,762 to $6,683, about $4,683 | Angi, Seattle new furnace costs, updated July 2026 |
| Ducted heat pump | $3,160 to $20,000 by efficiency tier | Angi, Seattle heat pump installation costs, updated July 2026 |
| New central AC | $5,098 to $9,785, about $7,377 | Angi, Seattle AC replacement costs, updated August 2026 |
Get an estimateA comfort advisor will call you to set up your visit.
Booking service in Issaquah
Reach our Redmond office at (425) 645-0404, or use the form on this page. A comfort advisor confirms what is going on and books a time that suits you. The technician, plumber or electrician who arrives tests the system first, then puts the options and prices in writing, including any Energy Smart Eastside or PSE rebate that applies. Work starts only after you approve it, and we take care of permits and inspections for the jobs that need them.
Warranty and Home Comfort Club
We support the manufacturer’s warranty on covered equipment parts, and we stand behind our 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 home services FAQ
Does Home Comfort Alliance serve Issaquah, WA?
Yes. Our Redmond branch serves Issaquah for heating, cooling, plumbing and electrical work. Call (425) 645-0404.
Is Issaquah part of Energy Smart Eastside?
Yes. Issaquah is one of six Eastside cities in the program, which offers $1,000 for qualifying heat pumps installed by an approved contractor and a bonus of up to $5,000 for moderate-income households. Home Comfort Alliance is an approved contractor.
Who supplies electricity and gas in Issaquah?
Puget Sound Energy supplies both electricity and natural gas.
Who issues permits in Issaquah?
The City of Issaquah Permit Center issues plumbing and mechanical permits. Electrical permits come from Washington L&I.
Are estimates free in Issaquah?
Yes for new equipment: replacement and installation estimates cost nothing. For repairs there is a trip fee, and the advisor tells you the amount when booking.
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.
Ready to get started in Issaquah?
A Redmond-based comfort advisor will set up your visit and give you written options, Energy Smart Eastside and PSE rebate help and financing choices.
Get an estimate
A Redmond-based comfort advisor will call you to set up your visit.