Premium furnaces, ACs, and heat pumps — the flagship line we've installed for decades.
Glendale is an independent Lennox dealer serving the Greater Seattle area. Lennox builds some of the most efficient residential HVAC equipment sold in the U.S., and our installers and in-house sheet metal shop fit it to Pacific Northwest homes properly — sized, sealed, and supported after the install.
As an independent Lennox dealer, our technicians install and service Lennox systems day in and day out — from entry-level Merit units to the Dave Lennox Signature Collection.
Dave Lennox Signature Collection models carry a 10-year limited warranty on covered components, and Lennox furnace heat exchangers carry 20-year or lifetime limited warranties (per Lennox published warranty terms). We handle registration and warranty service locally.
We offer financing for Lennox equipment through Service Finance, with terms to fit your budget — subject to credit approval.
Seattle's bread-and-butter heat — Lennox tops the industry on efficiency.
Rare heat waves are getting less rare — high-SEER2 cooling pays off here.
All-electric heating + cooling — the direction Seattle utilities are paying you to go.
Specifications from the manufacturer's official published materials (lennox.com — SLP99V / furnace product specifications, 2026; Lennox SL28XCV / SL25XPV product bulletin, 2026; glendaleheating.com/lennox-glendale/ (dealer relationship), 2026). "Up to" ratings depend on the exact model and matched components.
These are the same published Seattle-area market ranges from our pricing explorer — not Glendale quotes. Your exact number depends on your home, and the estimate is free.
$4,000 – $9,000
Typical Seattle-area range
Merit-tier furnaces land toward the lower half of the Seattle range; Signature Collection modulating units trend to the top.
$5,100 – $9,800
Typical Seattle-area range
Higher-SEER2 Lennox ACs sit in the upper part of the range but cost less to run each summer.
$8,000 – $16,000
Typical Seattle-area range
Lennox ducted heat pumps typically price mid-to-upper range — before utility rebates.
These are typical Seattle-area market ranges compiled from published cost guides (Angi, HomeGuide, and Seattle-area 2025–2026 cost studies) — market context, not a quote from Glendale Heating & Air Conditioning. Your home's size, equipment, ductwork, electrical, and permits change the number. National figures are marked; Seattle-area labor typically runs above national averages.
High-efficiency Lennox heat pumps commonly qualify for Seattle City Light and PSE heat-pump rebates — eligibility follows each program's equipment list (efficiency thresholds), not the brand name, so we confirm your exact model qualifies before you sign.
They're Lennox's three product tiers. Merit is the value line, Elite adds efficiency and comfort features like two-stage operation, and the Dave Lennox Signature Collection is the premium line with the highest efficiency and quietest operation. We'll price options across tiers so you can compare honestly.
The flagship Lennox SLP99V reaches up to 99% AFUE — essentially every unit of fuel becomes heat. Mid-tier Lennox furnaces still commonly reach the 80–96% AFUE range. Higher AFUE matters in Seattle's long heating season.
Per Lennox's published terms, Dave Lennox Signature Collection models carry a 10-year limited warranty on covered components, and furnace heat exchangers carry 20-year or lifetime limited warranties. Glendale also backs its own workmanship with a 60-day guarantee.
Often, yes — Seattle City Light and PSE rebates are based on the program's qualified-equipment lists and efficiency thresholds rather than brand. Many high-efficiency Lennox heat pumps qualify. We check your specific model against the current list before you commit.
Comparing brands? See all the equipment we install or ask us — we'll tell you honestly which one fits your house.
Free estimates on new systems, honest tier-by-tier comparisons, and rebate paperwork handled for you — the way we've done it since 1938.
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