Furnace runs but no heat, or cycles on and off. Causes include failed igniter, flame sensor, thermostat fault, or gas supply issue.
Confirm the thermostat is set and the gas valve is open, then call a licensed heating specialist.
Typical fix cost in Round Rock: $180-$1,400. Do not attempt work on live systems - get a licensed specialist on it.
| Item | Range |
|---|---|
| Diagnosis | $75-$150 |
| Repair | $180-$1,400 |
If there is risk of damage, safety hazard or no service at all, treat it as an emergency and act now. Otherwise schedule a standard visit.
Regular maintenance catches most of these early - see the maintenance checklist in the emergency guide.