Furnace Blowing Cold Air? Here's What's Wrong in Farmington, Utah
Same-day diagnostic and repair across Farmington and Davis County. Honest diagnosis, fixed-price quote, the work spelled out before we lift a tool.
Quick answer
Furnace Blowing Cold Air? Here's What's Wrong in Farmington, Utah — most cases trace back to thermostat fan set to on instead of auto or furnace in lockout from failed ignition. At Your Service Pros dispatches same-day across Farmington with a $79 HVAC diagnostic (waived on approved repair), free in-home replacement estimates, and a written fixed-price quote before any work begins. Licensed and insured in Utah; 436+ verified Google + Yelp reviews. Call (801) 407-9320 or book online.
Furnace Blowing Cold Air? Here's What's Wrong — what Farmington homeowners should know
Cold air from a heat-set furnace means the burner isn't firing OR isn't staying lit, but the blower is running anyway. Five common causes — three of which the homeowner can fix.
Local note for Farmington: at 4,308 ft elevation, HVAC equipment loses roughly 17% of nameplate capacity. Issues that would be minor at sea level can become symptoms here — we factor elevation into every diagnostic.
Most likely causes in Farmington
Thermostat fan set to ON instead of AUTO
The blower runs continuously regardless of whether the burner is firing. Between heat cycles, you feel cool air at the vents. Switch fan to AUTO.
Most commonFurnace in lockout from failed ignition
Tried 2–3 times to ignite, gave up, locked out for 60 minutes. Blower may run; burner is off. See /problems/furnace-not-igniting.
CommonDirty flame sensor
Burner lights briefly then goes out within 5 seconds. Blower keeps running through the post-purge cycle then shuts off. Repeats next cycle.
CommonPilot light out (older standing-pilot furnaces only)
Pre-2000 furnaces with a constantly-burning pilot. If the pilot blows out (drafty install, dirty thermocouple), the gas valve closes.
Less commonFurnace Blowing Cold Air? Here's What's Wrong FAQ — Farmington edition
How fast can you get to Farmington for furnace blowing cold air? here's what's wrong?
Same-day on most weekday calls — typical 2-hour arrival window across Farmington and the rest of Davis County. After-hours (after 7 PM) is a flat $150 emergency dispatch, waived on approved repair. Farmington is well inside our standard service area.
Do you charge to come out to Farmington for furnace blowing cold air? here's what's wrong?
$79 HVAC diagnostic (waived on approved repair). If you approve the repair on the visit, the diagnostic fee is waived — so the diagnostic isn't an extra charge on top of the fix.
Will my air conditioner running affect the furnace?
AC and furnace share the indoor blower. If the AC is set on a different thermostat schedule, you can get 'cold air' if the AC is running with the furnace fan on AUTO. Check both schedules.
Need help with furnace blowing cold air? here's what's wrong in Farmington?
We dispatch same-day across Davis County. Honest diagnosis, fixed-price written quote before any work begins, and family-owned service that takes pride in showing up on time.