HVAC Services for Kirkland-Area Homes
Four core services, one standard: installed to manufacturer spec by the owners, backed by labor warranties in writing and a 24-hour response commitment.
Northwest Thermal Solutions provides residential heating, air conditioning, heat pump, and ductless mini-split installation, replacement, repair, and maintenance across Kirkland, Bellevue, Redmond, Issaquah, and the surrounding King and Snohomish County area, with manufacturer-matched labor warranties on premium equipment and a 24-hour response commitment.
Four services, every home covered.
Heat Pumps
One system for heating and cooling, backed by up to a 12-year matched labor warranty. Utility rebates make it the best upgrade going, and we handle the paperwork.
Explore heat pumps →
Heating
Gas furnaces and electric air handlers installed to manufacturer spec, with a 10-year matched labor warranty and a documented startup on every install.
Explore heating →
Air Conditioning
Properly sized central cooling that holds up through Pacific Northwest heat waves, backed by a 12-year parts warranty in writing.
Explore air conditioning →
Mini-Splits
Ductless heating and cooling for additions, ADUs, and rooms your central system can't reach. Wall-mount heads or ceiling cassettes, no ductwork required.
Explore mini-splits →Not sure what your home needs? Start here.
The right answer depends on your ductwork, your current heat source, and what bothers you most about your comfort today. These four rules of thumb settle it for most homes, and a phone call covers the rest.
Talk it through with us →Want one system for heating and cooling?
A heat pump does both and earns the biggest utility rebates. Our featured service for a reason.
Furnace failing or past its prime?
Replace it right: a Trane or American Standard furnace with a 10-year matched labor warranty.
Home has ducts but no cooling?
Central AC drops into your existing ductwork. Properly sized, so it holds up in a heat wave.
A room, addition, or ADU with no ducts?
A ductless mini-split conditions it independently, no ductwork required.
The same warranty promise, on every service.
Whatever we install, the warranty is in writing: labor matched to parts year for year on Mitsubishi, Trane, and American Standard, and long parts coverage on every line we carry.
No service charge on covered calls.
Big-brand installers advertise long warranties, then charge a $200 to $300 service fee every visit. We don't. If a covered issue comes up on a system that hasn't been neglected, the visit costs nothing.
| Brand | Parts | Labor |
|---|---|---|
| Mitsubishi | 12yrs | 12yrs |
| Trane / American Standard | 10yrs | 10yrs |
| Midea | 12yrs | 4yrs |
The same five steps, whatever we install.
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…”
“Vlad and techs returned to check our units 3 months after relocating the outside fan/compressor. Found the issue and units are running great! We highly recommend NW Thermal Solutions for your HVAC systems!”
“Mark and crew did an excellent job repairing our mini-split. He does quality work for a fair price, and talked me through the process to make sure I understand the problem…”
Answered plainly, like a contractor would.
Real answers to what homeowners ask before they call.
What areas do you serve?+
Are you licensed and certified?+
Do you handle repairs, or just installations?+
How does the manufacturer-matched labor warranty work?+
Do you handle the rebate paperwork?+
How do I get an estimate?+
Tell us what your home needs. We respond within 24 hours.
No obligation. No charge for the estimate.