The usual suspects
The furnace switch or breaker
The light-switch-looking box on or near the furnace gets flipped by accident more than anyone admits. Then the panel breaker.
The blower door safety switch
A door panel not seated after a filter change holds the whole furnace hostage. Push it firmly until it clicks.
A thermostat problem
Dead batteries or a failed unit never sends the call for heat. Screen on doesn’t mean it’s talking.
A tripped internal safety
Rollout switches and condensate overflows lock the furnace out on purpose. Finding out why is the technician part.
Dead furnace, cold house?
We diagnose today, you approve the price first. Most power and ignition faults are one-visit fixes.
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Worth trying first (5 minutes, free)
- 1
Find the furnace switch and make sure it’s ON; check the breaker panel too. One reset only.
- 2
Re-seat the blower door until it clicks flush — the #1 after-filter-change call.
- 3
Fresh thermostat batteries, HEAT mode, setpoint above room temp.
- 4
Check the condensate: high-efficiency furnaces shut down if their drain backs up — look for water at the base.
Still not working? Then it’s a technician job — and the sooner it’s booked, the sooner the house is comfortable again. Book the visit →
Stop and book a pro if…
- The breaker re-trips — that’s a short; leave it off.
- Any gas smell — out of the house first, then PSE’s gas line.
- Burnt smell at the furnace or panel.
- It clicks repeatedly but never fires — stop retrying and book.
Why homeowners hand it to us
- You approve the price first. Upfront quote before a single screw turns.
- Same-day service. Book in a minute, hear from a tech within 1 business hour.
- 500+ jobs done by 4.9★ rated, professional technicians.
- Fixed right, guaranteed. If it’s not right, we make it right.
Quick answers
The screen is on but nothing happens. Thermostat or furnace?
Try HEAT with the setpoint 5°F above the room and listen at the furnace for a click within a few minutes. Click but no start: furnace side. Total silence: thermostat circuit. Either way it’s a quick professional diagnosis.
It was fine yesterday. What dies overnight?
Igniters, capacitors and safety switches all fail suddenly rather than gradually — and cold nights are exactly when a marginal part quits. Sudden death is usually a small component, not the furnace.
How fast can you come?
No-heat calls get priority. Book online and a tech reaches out within 1 business hour — same-day across King, Snohomish and Pierce County.
Done guessing?
The house only gets colder from here. Book now — tech contact within 1 business hour.
Book My Same-Day Visit60 seconds online · or call (206) 486-6373
More: all problems · heating service · AC service · 24/7 emergency