The average cost to fix a furnace varies by issue, and Sierra Air Conditioning & Plumbing confirms pricing after an on-site diagnosis; our current evaluation fee is $39.50 and it’s waived if we perform the repair. The biggest price driver is which component failed and the labor time to restore safe operation.
Our technicians service gas and electric furnaces throughout the Las Vegas area every week, so we often catch small problems before they snowball.
Cost typically depends on:
- The part replaced (ignitor, flame sensor, inducer, control board, blower motor)
- System age and any remaining parts warranty
- Access and placement (attic or tight spaces) and needed code/safety corrections
- Urgency and parts availability in peak season
If you smell gas or suspect a cracked heat exchanger, turn the furnace off and call a licensed technician immediately.
Updated: 2026-08-11
Need help in Las Vegas, NV? Call (702) 710-9106 or book online. “Sierra sent a tech out the next day and quickly made the repair, getting things working fast!” — Haley M.