The usual suspects
Settings and schedules
A hold, a schedule override, or HEAT-vs-EM-HEAT confusion — the thermostat doing what it was accidentally told.
A broken W-wire connection
The single wire carrying "make heat" breaks at a splice or terminal — screen fine, furnace deaf.
Equipment-side lockout
The furnace heard the call but locked out on a fault — its LED blink code says why.
A failed thermostat relay
The stat’s internal switch dies; everything looks right, nothing switches.
We find where the signal dies.
Stat, wiring or equipment — a meter finds the break in minutes. Priced upfront, fixed fast.
Book My Same-Day Visit60 seconds online · or call (206) 486-6373
Worth trying first (5 minutes, free)
- 1
Setpoint 5°F above room temp, no holds or eco modes active.
- 2
Listen at the furnace when someone raises the setpoint: a click within minutes = signal arrives.
- 3
Check the furnace LED through the little window — count the blink pattern and tell us.
- 4
Battery-powered stat? Fresh ones — weak batteries fail at the relay moment.
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 furnace clicks but never fires — equipment side; book it.
- No click at all with fresh batteries — wiring or stat; book it.
- The furnace LED blinks a repeating code.
- Any gas smell — the usual rule: out first, PSE second.
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
How do I tell if it’s the thermostat or the furnace?
The click test above splits it: signal arriving but no ignition is a furnace problem; no signal is thermostat or wiring. Either way it’s a quick professional find.
My smart thermostat says "heating" — is it lying?
It reports what it COMMANDS, not what happens. A broken wire downstream leaves it heating an imaginary house.
What’s the usual fix?
A wire re-termination, a relay, or clearing the furnace fault — small fixes found by meter. You approve the price before we do anything.
Done guessing?
Every day of "it says heat" is a cold day. Book and be done with it.
Book My Same-Day Visit60 seconds online · or call (206) 486-6373
More: all problems · heating service · AC service · 24/7 emergency