Furnace Installation & Replacement in Issaquah, WA
A properly sized, high-efficiency furnace keeps every room warm through Pacific Northwest winters while cutting gas bills.
Older Olde Town furnaces are frequently reaching the end of their service life, while the newer construction up on the Highlands and Talus is usually still on its original, warrantied system.
Symptoms we see every week in Issaquah
- Furnace is 15+ years old or needs frequent repairs
- Uneven heating or cold spots across the home
- Rising winter gas bills from an aging unit
- Cracked heat exchanger or unreliable ignition
Spec'd to your Issaquah home
We size every system to your actual demand — not a one-size guess. Here's what a typical furnace install includes:
| Efficiency | Up to 98% AFUE |
|---|---|
| Capacity | 40k–120k BTU |
| Fuel | Natural gas or propane |
| Lifespan | 15–20 years |
Furnace Installation in Issaquah: what's different here
Olde Town's older valley homes need different equipment than the newer master-planned homes and condos up in the Highlands and Talus, where many owners have already moved to heat pumps. Issaquah homes from the 1970s and 1980s are often on their second furnace now. We size the replacement to the home rather than to the old unit's label, because many were oversized when they went in.
Permits and inspections
A furnace replacement needs a mechanical permit, and changes to the gas line are inspected too. Mechanical and plumbing permits in Issaquah go through the City of Issaquah Permit Center. When the work needs a permit, we pull it, schedule the inspection and leave you the paperwork.
Utilities and rebates
Issaquah homes get electricity from PSE, and most have PSE natural gas. Issaquah homeowners may qualify for utility, state or federal rebates. We point you to the current programs for your address before you sign.
Where we work in Issaquah
Our job records show more than 80 completed jobs for Issaquah customers across ZIP codes 98027, 98029, 98075. That includes 3 furnace installation jobs, most recently in 2025. We take furnace installation calls in Issaquah Highlands, Talus, Olde Town, Squak Mountain, Issaquah Valley and the rest of Issaquah.
Work we stand behind
10-year parts warranty, 2-year labor, and permit closure documentation provided.
Book this serviceGet a same-day quote from a real technician in Issaquah.
Straight answers for homeowners in Issaquah.
Who issues the permit for furnace installation in Issaquah?
Mechanical and plumbing permits in Issaquah go through the City of Issaquah Permit Center. For furnace installation, we apply for the permit, book the inspection, meet the inspector on site, and give you the final sign-off for your records.
Should I replace my furnace with a heat pump in Issaquah?
It depends on your ductwork, panel capacity and fuel costs. We give written options for a furnace, a heat pump and a dual-fuel system so you can compare. Issaquah homeowners may qualify for utility, state or federal rebates. We point you to the current programs for your address before you sign.
Which Issaquah neighborhoods do you cover?
Our job records show more than 80 completed jobs for Issaquah customers across ZIP codes 98027, 98029, 98075. That includes 3 furnace installation jobs, most recently in 2025. We take furnace installation calls in Issaquah Highlands, Talus, Olde Town, Squak Mountain, Issaquah Valley and the rest of Issaquah. Call (425) 615-5000 for same-day service.
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