Furnace Installation & Replacement in Kirkland, WA
Gas furnaces and electric air handlers, installed to manufacturer spec and backed by a 10-year matched labor warranty and a 24-hour response commitment.
Northwest Thermal Solutions installs and replaces gas furnaces and electric air handlers for homeowners across Kirkland, Bellevue, Redmond, Issaquah, and the surrounding King and Snohomish County area. Trane and American Standard equipment carries a 10-year parts warranty matched by a 10-year labor warranty in writing, with a 24-hour response commitment on service calls.
Heating services for Kirkland-area homeowners.
New Installation
Gas furnaces and electric air handlers, sized to your home and installed to manufacturer spec.
Furnace Replacement
Swap-out of an aging or failed furnace, with a documented startup before we call it done.
Diagnostic & Repair
No heat, short-cycling, or strange noises, diagnosed and explained before anything gets replaced.
Safety Inspection
Heat exchanger and venting checks, because a failing gas furnace is a carbon monoxide risk, not just a comfort problem.
Signs your furnace is close to failing.
Furnaces tend to quit during the coldest week of the year, because that's when they work the hardest. Catch the warning signs early and you replace on your schedule, not during a cold snap when every HVAC company in King County is booked out. A diagnostic visit tells you whether a repair will hold or whether replacement is the smarter call.
Schedule a diagnostic visit →Weak or uneven heat
Some rooms warm, some cold, or air from the vents that never feels properly hot.
Short-cycling
The furnace fires up, runs briefly, and shuts back down instead of completing a full cycle.
Rising gas or electric bills
A noticeable increase without any change in how you heat your home.
Age and repair creep
Repairs getting more frequent or more expensive on a furnace past its prime.
Trane and American Standard, never a budget-tier furnace.
Trane
10-year parts matched with 10-year labor. Quiet, efficient gas furnaces and air handlers built for damp Pacific Northwest winters.
American Standard
10-year parts matched with 10-year labor. The same equipment as Trane, sold under a second name.
Air Handler + Heat Pump
Replacing electric heat? An air handler paired with a heat pump heats and cools from one system, and utility rebates can apply. We'll tell you straight which makes sense for your home.
A 10-year labor warranty, matched to the parts warranty in writing.
Most contractors register the parts warranty and stop there. On every Trane and American Standard furnace we install, the labor warranty matches it, year for year.
No service charge on covered calls.
Neglect voids most manufacturer warranties anyway, so ours simply matches what the manufacturer already backs, in writing.
| Brand | Parts | Labor |
|---|---|---|
| Trane | 10yrs | 10yrs |
| American Standard | 10yrs | 10yrs |
A furnace install is only as good as the person setting it up.
Gas line, venting, airflow, and combustion all have to be right. That's why Mark and Vlad stay personally involved in every install.
From no heat to documented startup, in five steps.
Gas furnaces don't earn utility rebates. Heat pump conversions do.
We won't invent a discount that doesn't exist: current utility rebate programs are built around heat pumps, not gas furnaces. But if you're heating with electric baseboards or an aging electric furnace, switching to a heat pump can qualify. We handle the paperwork and apply the discount upfront.
Ask which applies to your home →Real reviews, not written by us.
“Mark and the crew did an awesome job by replacing our old HVAC system with a more efficient one. They also suggested changes to cool the upper floor that have worked wonders since installation…”
“They deliver on a promise! They were courteous and professional. They left the worksite cleaner than when they came.”
“Northwest team provided us excellent service to install new AC and replace the old Furnace. They are pretty professional and patience.”
Answered plainly, like a contractor would.
Real answers to what homeowners ask before they call.
How long does a gas furnace last?+
Should I repair or replace my furnace?+
Do you install gas and electric heating?+
Can a failing furnace really leak carbon monoxide?+
How does the 10-year labor warranty work?+
How much does furnace installation cost in Kirkland?+
Ready for heat you don't have to think about?
We serve Kirkland, Bellevue, Redmond, Issaquah, and the surrounding King and Snohomish County area.