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Understand your home's HVAC before anyone quotes it

Plain-language guides written for Seattle homes — pre-war Craftsmans, mid-century ramblers, new townhomes — by a shop that's been working on them since 1938. Learn first; the sales conversation can wait.

Heating

4 in-depth guides for Seattle-area homes

Browse Heating

Air Conditioning

4 in-depth guides for Seattle-area homes

Browse Air Conditioning

Heat Pumps

4 in-depth guides for Seattle-area homes

Browse Heat Pumps

Ductless Mini-Splits

4 in-depth guides for Seattle-area homes

Browse Ductless Mini-Splits

Indoor Air Quality

4 in-depth guides for Seattle-area homes

Browse Indoor Air Quality

Maintenance & Tune-Ups

4 in-depth guides for Seattle-area homes

Browse Maintenance & Tune-Ups

All guides

Heating How long does a furnace last in Seattle? Heating How does a gas furnace actually work? Heating Why does my furnace keep turning on and off? Heating Still heating with oil in Seattle? Here's the honest picture Air Conditioning How does central AC work with the furnace I already have? Air Conditioning How do I get my Seattle home ready for the next heat wave? Air Conditioning Why is my AC running but blowing warm air? Air Conditioning What size AC does my house need — and why isn't bigger better? Heat Pumps How does a heat pump heat a Seattle home? Heat Pumps What's a heat pump's balance point — and do I need backup heat? Heat Pumps Why is my heat pump steaming, whooshing, or icing up? Heat Pumps What is a dual-fuel (hybrid) heat pump system? Ductless Mini-Splits How do ductless mini-splits actually work? Ductless Mini-Splits Why is ductless the go-to for Seattle's older homes? Ductless Mini-Splits How should a multi-zone mini-split be laid out? Ductless Mini-Splits What's the right heating and cooling for an ADU or backyard cottage? Indoor Air Quality What should my HVAC do when wildfire smoke rolls in? Indoor Air Quality MERV, HEPA, UV: what does each actually do? Indoor Air Quality Why is my Seattle home damp — and what actually fixes it? Indoor Air Quality Are my ducts the real problem? Leaks, airflow, and honest fixes Maintenance & Tune-Ups What does a professional HVAC tune-up actually include? Maintenance & Tune-Ups When should HVAC service happen — and what gets checked in each season? Maintenance & Tune-Ups HVAC filters: which one, which way, how often? Maintenance & Tune-Ups How do maintenance records protect my HVAC warranty?

When you're past learning

Decision Guides

Repair or replace, heat pump or furnace, which brand tier — frameworks with honest trade-offs.

Cost Guides

Sourced Seattle-area price ranges for every major job, plus the active rebate stack.

HVAC Glossary

Every term a quote or spec sheet will throw at you, defined in plain English.

87 years of answering these questions

Everything here reflects what our technicians actually see in Greater Seattle homes. When you'd rather just ask, the shop picks up.

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Whether it's a furnace that quit on a cold morning or a whole new system, the Glendale team is ready. Honest pricing, expert work, and 87+ years behind every visit.

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