Straight answers, since 1938

We serve the Greater Seattle area — including Seattle, Bellevue, Renton, Kent, Burien, Des Moines, Federal Way, Auburn, Tacoma, and surrounding King and Pierce County communities. Not sure if you're in our area? Call (206) 243-7700 and we'll let you know.

Since 1938 — that's 87+ years serving Seattle families. We're family-owned and now in our third generation, with many customers whose grandparents called us first.

Yes. Glendale Heating is fully licensed and insured in Washington State (WA Lic. GLENDHA053Q2). Every technician we send is trained, background-checked, and equipped to work safely in your home.

We do. Our regular hours are Monday–Saturday, 8:00 AM – 7:00 PM, with a Sunday emergency on-call technician for urgent problems (an after-hours call-out fee applies). Furnace out on a cold morning or AC down during a heat wave? Call (206) 243-7700 and we'll get a technician headed your way.

Absolutely. Washington's mild winters are ideal for heat pumps — they heat efficiently nearly all year and cool your home in summer too. Ask us about current utility rebates that may apply to your home; it's one of the smartest upgrades a PNW homeowner can make.

It depends on age, repair cost, and efficiency. As a rule of thumb, if your system is over 12–15 years old and facing a major repair, replacement often saves money long-term. Our technician will give you the honest options so you can decide.

As an authorized Lennox dealer we specialize in high-efficiency Lennox systems, and our technicians service all major HVAC brands. We carry common parts on the truck so most repairs are handled in a single visit.

In most cases we offer same-day or next-day appointments across the Greater Seattle area. Emergencies jump to the front of the line.

Yes. During Seattle's smoke season, whole-home filtration and air purification capture the fine particulate that standard filters miss. We can design a system that keeps your indoor air clean when the air outside isn't.

It depends on your home. Many Seattle homes benefit from balanced humidity control to reduce allergens, condensation, and that damp-winter feeling. We'll assess your home and recommend the right solution.

We recommend two tune-ups a year — one in spring for cooling and one in fall for heating. Seasonal maintenance keeps efficiency high, prevents breakdowns, and protects your Lennox warranty.

Our Glendale Maintenance Plans start as low as $23/month and include professional maintenance visits (one per year on Essential, two on Elite), repair discounts of 10–20% by plan level, priority emergency scheduling, and accrual credit toward a future system replacement. See our membership plans for a full comparison.

We do. We offer flexible financing with approved credit through trusted partners — Service Finance for Lennox systems (ask about the current Lennox Summer Promotion), Synchrony for Mitsubishi systems, and GreenSky for any brand — and we help you find any utility rebates that apply. See our financing page.

Always. We quote flat, upfront pricing before any work begins — so you know exactly what you're paying.

Yes — estimates on new system installations are free. We'll assess your home, walk you through right-sized options, and give you a clear written quote.