Lennox HVAC in Seattle, WA

Lennox HVAC in Seattle, CA | Meadowsweet Heating & Air

We service Lennox furnaces, heat pumps, and ductless mini-splits throughout Seattle, and Seattle Furnace Repair work here looks different than it does almost anywhere else. Most Seattle homes built before 2021 have no cooling ducts at all, which means most Lennox equipment we touch is either a heat pump retrofit or a ductless system. Call (747) 966-3037 and we’ll send a background-checked technician who knows which Lennox model you have before they ring the doorbell.

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Why Seattle Residents Choose Us for Lennox Service

Luis Serrano, our owner and lead technician, trained in refrigeration and air conditioning technology and has spent two decades working on equipment from all nine major brands, including every Lennox series still running in Seattle basements and crawlspaces. He’s the one who makes sure our techs understand the difference between a Merit furnace in a postwar ranch and a Dave Lennox Signature Collection heat pump on a hillside in Queen Anne. Tell me what the house feels like, and I’ll tell you what’s actually going on.

We carry OEM Lennox parts for the repairs that matter most: ignitors, flame sensors, control boards, gas valves, and heat exchangers. For capacitors and contactors, we use vetted aftermarket components that meet spec, which keeps the repair bill honest without cutting corners. Every job includes a written price before work starts and the 365-Day Done Right Promise behind it.

We are an independent Lennox service provider. We are not authorized, endorsed, or warranty-backed by Lennox, and that’s a deliberate choice: our repair-versus-replace advice starts with the equipment in front of us, not a brand program. If the Lennox furnace in your Capitol Hill basement has a cracked heat exchanger at year 18, we’ll show you the numbers and let you decide.

Common Lennox HVAC Problems We Solve in Seattle

These are the five calls we run most often for Lennox equipment in this city:

• Ignitor and flame sensor failures on Elite and Signature furnaces. Seattle’s near-constant damp from October through April puts condensation and fine dust on the surface-mount ignitor and flame sensor, which shorts the flame sense and locks out the control board. The furnace clicks, tries to light, and shuts down on a code. We replace both with OEM Lennox parts and check the drain line while we’re in there.
• Clogged condensate pumps and drain lines on ductless heads. The MPA and MLA mini-split heads common in Seattle’s 1920s bungalows collect pollen and marine-layer moisture every spring. The pump blocks, the pan overflows, and you get water down the wall or a shutdown code. We clear the line, test the pump, and leave a clean drop cloth under the unit.
• Reversing valve and defrost board issues on heat pumps tucked under decks. A lot of Seattle homes have the outdoor unit under a deck or in a crawlspace vent well to keep it out of the rain. That traps fog and damp air around the reversing valve, and the defrost board starts cycling at odd times. It usually shows up as the system blowing cold air when it should heat.
• Cracked heat exchangers on older G-series furnaces. Seattle’s winter humidity accelerates corrosion from inside the exchanger, and we find cracks here more often than we do in dry climates. On a 15-year-old unit, we’ll price the replacement honestly against a new furnace and show you both options in writing.
• Mini-split sizing mistakes from the post-2021 rush. After the heat dome, plenty of contractors installed ductless systems fast. Some of those installs were undersized for the upstairs bedrooms they now cool. We correct the line set, add a head where it’s needed, and get the system balanced for Seattle’s hot, dry summer spikes.

Lennox Service in Seattle: What Local Conditions Mean for Your Equipment

The June 2021 heat dome reached 108°F at Sea-Tac and changed what a Lennox system in Seattle is even for. Before that week, most homes here were built to hold heat, not shed it: Craftsman bungalows in Wallingford, Beacon Hill, and Capitol Hill went up with gas or oil-fired furnaces or hydronic radiators, and no return-air ductwork at all. That means when a Seattle homeowner calls about our AC Repair in Seattle today, the question is rarely “can you fix my central AC” and almost always “can you cool this house without gutting it.” The answer is a ductless mini-split or a heat pump, and that’s the work we do most here. Traditional split-system cooling retrofits are the exception, not the rule, because the duct build-out cost on a 1920s home typically kills the project before it starts. A Lennox owner in Seattle is far more likely to have an MLA head on the wall than an Elite condenser in the yard, and our parts stock and training reflect that.

Lennox Models & Products We Service in Seattle

We work on the full Lennox lineup that shows up in Seattle homes, from the Merit series (ML14XC1 and ML17XC1 AC units, ML180 and ML193 furnaces) in mid-century ranches to the Elite series (EL296V and EL296E furnaces, EL16XC1 and EL18XPV AC and heat pumps) in newer construction. The Signature series (SL280V and SLP98V furnaces, SL25XPV and SL28XPV heat pumps) gets the same treatment. For the ductless work that dominates this city, we service the Dave Lennox Signature Collection MLA, MPA, and MPB heads. When it comes to parts, we default to OEM Lennox for anything safety- or control-related, and we stock the common ignitors, flame sensors, and boards locally so a fall lockout doesn’t mean a week without heat. If you need Lennox sales & service, we’ll help you choose the right system for a house that was never built for cooling.

Lennox Service Pricing in Seattle

FAQs - Lennox HVAC in Seattle

My Seattle house has radiators and no ducts - can you install a Lennox air conditioner without a full duct build-out? Yes, and that’s most of the Lennox cooling work we do in this city. A ductless mini-split, usually a Dave Lennox Signature Collection MLA or MPA head, mounts on the wall and needs only a small line set to the outdoor unit. No ductwork, no gut renovation. Call (747) 966-3037 and we’ll walk you through the exact layout for your house.

Is a Lennox heat pump a good fit for Seattle’s climate? Seattle is one of the best heat pump climates in the country. Winter lows average in the low 40s°F, which is nowhere near the threshold where a modern Lennox heat pump loses efficiency, and the damp, cool air means it runs clean all season. We install Elite and Signature series heat pumps in Seattle homes year-round.

Why does my Lennox furnace lock out every fall? In Seattle, the usual cause is a corroded flame sensor or a failed surface-mount ignitor. Months of damp air from the marine layer leave condensation on the flame sense, the board can’t confirm ignition, and the furnace shuts down on a safety code. We clean or replace the sensor and ignitor, and the furnace fires normally. If it’s a bigger issue like a control board, we’ll show you the exact part and price before we touch it. Call (747) 966-3037 and we’ll get you on the schedule same day.

Do you use genuine Lennox parts when you repair our system? Yes, for anything safety- or control-related: ignitors, flame sensors, gas valves, control boards, and heat exchangers. For wear items like capacitors and contactors, we use vetted aftermarket parts that meet manufacturer spec, which keeps the repair bill fair without compromising the system. We’re independent, so we choose parts based on what’s best for the equipment, not a brand program.

What does a Lennox mini-split installation look like in a steep Seattle neighborhood? On hillside streets in Wallingford or Queen Anne, the line set often runs through a crawlspace and along a foundation wall, and the outdoor unit may sit on a small pad or bracket on a slope. We route lines carefully, keep the unit off the ground where moisture pools, and leave the job site with drop cloths and shoe covers doing their job. Every install includes a photo of the clean-up before we leave. For a precise quote on your specific hillside, call (747) 966-3037.

Service Areas Near Seattle

We serve the Seattle service area and the neighborhoods around it: Capitol Hill, Wallingford, Beacon Hill, Queen Anne, and Ballard. If you’re outside the immediate city, we also run calls in the broader region, and our sister teams cover Lennox service in Nashville-Davidson and Lennox service in Las Vegas.

Book Your Lennox Service in Seattle Today

A live person answers our phones 24/7, including nights and weekends, and we’ll get a technician to your Seattle home fast. Call (747) 966-3037 for a free estimate, a written price, and a repair that respects your floors, your pets, and your sleeping kids.

Written by Luis Serrano, Owner at Meadowsweet Heating & Air, serving Seattle since 2004.