How much does furnace repair cost?
Quick answer: maintenance starts at $150. Our recent furnace repairs cost between $350 and $990, and a typical one is around $690. If the furnace needs to be replaced, expect to pay from $5,000 for the unit.
We always diagnose first, and you get the final price in writing before any work starts. Prices can change, so your technician will confirm the exact cost.
| Job | Price |
|---|---|
| Service call (included in the repair price if you approve the repair) | $59 |
| Heating maintenance | From $150 |
| Blower motor capacitor (start device) replacement | From $350 |
| Control board replacement | From $620 |
| Draft inducer (exhaust fan) replacement | From $680 |
| Blower motor wiring repair and cleaning | From $690 |
| Ignition control replacement | From $940 |
| Furnace replacement | From $6,000 |
Based on our prices in the East Bay and Marin County. Prices last updated: October 22, 2026.
This page in short
| Service | Diagnostics, repair, maintenance and replacement of gas and electric furnaces and heating systems |
|---|---|
| Area | East Bay (Alameda and Contra Costa counties) and Marin County |
| Hours | 7am–7pm |
| Typical cost | From $150 maintenance, service call $59 (included in the repair price if you approve the repair) |
| Not covered | Boilers, radiators and hydronic heating — outside our C-20 license |
| Credentials | C-20 licensed (CSLB #1143205), insured, factory-trained technicians |
| Contact | (925) 302-2429 · support@fusesmt.com |
Recent repairs: what broke and how we fixed it
Real furnace jobs from the past season. If you smell gas, shut off the supply at the valve and call from outside the house.
| Problem | City | Cause | What we did |
|---|---|---|---|
| Blower won’t start | Pittsburg | Failed blower motor start device | Replaced the start device. The furnace is old, so we recommended planning a replacement |
| Furnace won’t light | Oakland | Failed ignition control and ignition module on a 30-year-old furnace | Replaced both parts, cleaned the flame sensor and blower, adjusted the gas valve |
| Furnace won’t light | Lafayette | Failed ignition control | Replaced the ignition control and serviced the furnace |
| No heat, controls dead | Mill Valley | Failed control board and control transformer | Replaced the board and transformer, checked the full heating cycle |
| Electrical fault at the blower | Concord | Bad electrical connection at the blower motor | Took out the control board and blower, repaired the connection, cleaned the blower assembly |
| Exhaust system fault | Tiburon | Failed draft inducer | Repaired the exhaust and replaced the draft inducer assembly |
“Once I’ve got the furnace open for a repair, I’ll clean the flame sensor and the blower and check the gas valve if they need it. It takes a few extra minutes and can save you another call in January”
Alex, lead HVAC technician
Recent furnace work across Alameda, Contra Costa and Marin
Service area
We cover Alameda, Contra Costa and Marin counties, from Berkeley and Oakland up to Novato and out to Danville and San Ramon, from three shops in Richmond, Walnut Creek and Danville. See all cities we serve.
Furnace repair questions
Do you offer same-day furnace repair?
It depends on the shedule of our technician, so we can’t say that same-day is available always. We work 7am–7pm and same-day slots are sometimes available across Alameda, Contra Costa and Marin counties. The first cold week of the season fills up fast, so call early.
Is a repair on an old furnace covered by warranty?
Our warranty covers the parts we install and the work we do. On an older furnace we can’t warranty the original components, such as the heat exchanger, blower motor or gas valve, because they can fail on their own at any time.
Which furnace brands do you repair?
All of them. We install mainly Daikin and Goodman, but we repair every brand — Carrier, Bryant, Lennox, Trane, Rheem, American Standard and older units. If a part is discontinued, we tell you and lay out the options.
What is a cracked heat exchanger, and can it be fixed?
The heat exchanger separates combustion gases from the air you breathe. A crack can let carbon monoxide into the airflow. It cannot be repaired. We inspect it on every furnace we service, and if it is cracked we shut the unit down and discuss replacement.
Furnace down and the house is getting cold?
Get final price before we start. Not sure whether to fix or replace? We’ll tell you at the visit.
