Top-rated independent heating and cooling across California's Central Valley and the Sierra foothills

Gas Furnace Repair in Modesto, CA

If you smell gas, leave the house now, call 911 or your gas utility from outside, then call us. With that clear, gas furnace repair in Modesto usually comes down to an igniter that no longer glows, a flame sensor coated in residue, a failed inducer motor or a pressure switch reading a blocked flue. We test the ignition sequence, watch the burners light and check the heat exchanger for cracks. Reach us by phone, or use the quote form and describe what the furnace does when it tries to start.

Call (888) 381-2953

A real person answers
Open 7 days
Written quote before work starts

Taking calls until 5:00 PM PT

All major brands repairedCarrier Trane Lennox Goodman Rheem York American Standard Bryant

What brings Modesto homeowners to this job

There is a boom or rumble when the heat kicks on Delayed ignition from dirty burners or a gas pressure problem
The thermostat says heat but nothing turns on at all Thermostat wiring, a tripped breaker, a blown fuse on the board, or a door safety switch
The furnace blows but the air is cold Ignition failure, flame sensor fouling, or a gas valve not opening

What a gas furnace repair visit involves

We start with what the furnace is actually doing, so tell us what you heard and when it stopped. From there we watch a full heating cycle: call for heat, inducer, ignition, flame, blower, and shutdown. Most failures show themselves somewhere in that sequence. We read the control board diagnostics, check gas pressure and airflow, and look at the heat exchanger. Then we tell you the failed part, what caused it, and whether repair or replacement makes better sense for the age of the unit.

What we check on the unit

Common culprits are the igniter, flame sensor, pressure switch, inducer motor, limit switch, gas valve, and control board. A dirty flame sensor will light the burners and drop them seconds later, which homeowners usually describe as the heater teasing them. We also check filters, return airflow, and duct static, because a starved furnace overheats and trips its limit again and again. On attic and package equipment we inspect the flue, condensate path, and blower wheel while we are up there.

How we decide repair is the right call

We weigh the age of the furnace, the cost of the failed part, and the condition of the heat exchanger and blower. A ten year old unit with a bad igniter is a straightforward repair. A furnace with a cracked heat exchanger is a safety problem and gets shut down, not patched. If the same part has failed twice, we look upstream for the real cause, usually airflow or a wiring fault. You get both options in plain language before we touch anything.

Modesto coverage

From Modesto we also cover Ceres, Turlock, Riverbank, Oakdale, Salida, Ripon, Manteca, Escalon and Patterson.

95353
95354
95355
95356
95357
95358
95366
95367

What Modesto requires, and what it may pay back

Power here comes from Modesto Irrigation District (MID), gas from Pacific Gas and Electric (PG&E).

Before you buy, look at TECH Clean California heat pump incentives and Energy Upgrade California. We will not promise something that closed last quarter, but we will tell you what is running when we quote.

Replacements fall under California Title 24, Part 6 and normally need a permit, with HERS verification and CF2R/CF3R registration on most changeouts. City of Modesto Building Safety Division handles them.

The federal 25C Energy Efficient Home Improvement Credit applies to qualifying equipment, and the efficiency tier it requires is worth checking before you choose a system.

Related furnace repair work in Modesto

All furnace repair in Modesto → · Gas Furnace Repair across the region →

The same on every visit

The quote comes first, in writing

Covering 123 cities across California, Nevada.

Phones answered by people

Open 7 days, 8:00 AM to 5:00 PM PT.

Independent of every manufacturer

Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.

Gas Furnace Repair in Modesto — quick answers

My gas furnace lights then shuts off after a few seconds. What is wrong?

Usually a dirty or failing flame sensor, sometimes a flue or pressure switch problem. The furnace proves flame, loses the signal, and closes the gas valve on purpose. It is a repair visit, not a homeowner fix.

Should I keep resetting the breaker to get heat?

No. Resetting once is reasonable. If it trips again, stop and call us. Repeated trips mean a motor, board, or wiring fault that gets worse and can become a fire risk.

How fast can you get to my house in Modesto?

Call us and we will give you a real window for the day rather than a guess. During a July heat run our schedule fills early, so morning calls usually get same-day or next-day attention. If your AC is out and you have young kids, someone elderly at home, or an indoor temperature climbing past the mid 80s, tell us on the phone and we will move you up the list.

How it works

Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That tells us whether to bring parts for a cooling fault or a heating fault.
Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and coil, refrigerant pressures, and the outdoor unit. You get told what failed and why, in plain words, before anything is replaced.
Step 3
Repair and verify
We make the repair, then run the system and measure the results at the vents. If a part needs ordering, we say so and give you a realistic window instead of a vague promise.

Call (888) 381-2953

A real person answers
Open 7 days
Written quote before work starts

Why homeowners call us

Built for real valley heatWe work in areas where afternoons sit above 110 degrees and systems run for months without a break. That shapes how we size repairs, check capacitors and contactors, and judge whether a compressor is genuinely done.
Attic and package unitsPlenty of homes across the region run attic air handlers or rooftop package units instead of a garage furnace and a side-yard condenser. We are used to the access, the duct runs, and the drain issues those setups bring.
Dust and debris we expectAg dust, cottonwood fluff and grass clippings pack condenser coils and starve a system of airflow. We clean what we find and show you the difference, rather than adding refrigerant to a unit that just could not breathe.
Heating too, not only ACFurnace repair, heat pump faults and no-heat calls get the same attention as summer work. Ignition problems, cracked or failing components and short cycling all get diagnosed before we recommend anything larger.
All major brands, gas & electricFrom Carrier and Trane to Lennox, Goodman, Rheem and Bryant, serviced independently.
Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.