Ductless Mini-Split Installation in Kirkland, WA
Room-by-room heating and cooling with no ductwork required. Wall-mounted heads or ceiling cassettes, installed by the owners and backed by warranties in writing.
Northwest Thermal Solutions installs ductless mini-split systems for homeowners across Kirkland, Bellevue, Redmond, Issaquah, and the surrounding King and Snohomish County area, in wall-mount and ceiling-cassette form factors. Mitsubishi systems carry a 12-year parts warranty matched by a 12-year labor warranty, and every install includes a 24-hour response commitment.
Ductless services for Kirkland-area homeowners.
Single-Zone Installation
One indoor head for the space your central system never reaches: an addition, an office, a garage.
Multi-Zone Systems
Several indoor heads running off one outdoor unit, each room on its own temperature.
Diagnostic & Repair
Weak output, drips, or a head that won't respond, diagnosed, not guessed at.
Seasonal Maintenance
Filter and coil care that keeps a system running year-round in both directions.
Four situations where a mini-split is the right call.
Mini-splits solve the problems ducted systems can't. If any of these sounds like your house, a walk-through tells us how many zones you need and where the heads should go. You get a straight answer and a written quote, not an upsell.
Schedule a walk-through →That one room that's never comfortable
A bonus room, bedroom over the garage, or home office your central system can't keep up with.
No ductwork at all
Older homes on baseboard or wall heaters get full heating and cooling without tearing walls open for ducts.
Additions, ADUs, and garages
New square footage that would cost more to duct than it's worth. A mini-split conditions it independently.
Electric heat that costs too much
A ductless heat pump replaces resistance heat with far more efficient heating, and rebates can apply.
Mitsubishi, Bosch, and Midea, in the form factor that fits the room.
Mitsubishi
12-year parts matched with 12-year labor, the deepest coverage we offer. The benchmark for ductless, and often paired as zones with a central heat pump.
Bosch / Midea
Bosch-labeled units are built by Midea. A 12-year parts warranty and a 4-year labor warranty in writing, at a friendlier price than the premium line.
Wall-Mount or Ceiling Cassette
Wall-mounted heads for most rooms. Recessed ceiling cassettes when you want the equipment out of sight and the airflow spread four ways.
Warranties matched to the equipment, in writing.
A mini-split runs nearly year-round in both directions, so the labor warranty matters more, not less. On Mitsubishi, the labor warranty matches the 12-year parts warranty exactly.
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 |
|---|---|---|
| Mitsubishi | 12yrs | 12yrs |
| Bosch / Midea | 12yrs | 4yrs |
Placement is everything on a ductless install.
Where the head hangs, how the line set runs, where the condensate drains. Get those wrong and you hear about it for years. Mark and Vlad handle every install personally.
From walk-through to zoned comfort, in five steps.
A ductless mini-split is a heat pump, and rebates treat it like one.
PSE figures depend on your system and, in some cases, household income. Snohomish PUD covers qualifying heat pump upgrades from electric-resistance heat, which is exactly what many ductless installs replace. We handle the paperwork and apply the discount upfront, so the rebate lowers your invoice instead of arriving as a reimbursement check.
Ask about your rebate →Real reviews, not written by us.
“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…”
“They deliver on a promise! They were courteous and professional. They left the worksite cleaner than when they came.”
“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…”
Answered plainly, like a contractor would.
Real answers to what homeowners ask before they call.
What is a mini-split?+
What's the difference between a mini-split and a heat pump?+
Do mini-splits heat as well as they cool?+
Wall-mount or ceiling cassette, which should I pick?+
How many zones do I need?+
How much does mini-split installation cost in Kirkland?+
Ready to fix the room your system forgot?
We serve Kirkland, Bellevue, Redmond, Issaquah, and the surrounding King and Snohomish County area.