
The furnace symptoms we hear most
- The furnace blows but the air is cold Ignition failure, flame sensor fouling, or a gas valve not opening
- It starts, runs a minute, then shuts off Short cycling from a dirty filter, blocked flue, or a tripped limit switch
- I hear a click and then nothing happens Failed ignitor, control board relay, or a transformer that has given up
- 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
People call this furnace repair, heating repair or heater repair. Same visit, same written quote, same technician.
Safe things to check first
Worth a look before you call — sometimes it saves you the visit.
- 1Check the thermostat: fresh batteries, set to heat, and the target temperature above the room temperature.
- 2Look at your electrical panel for a tripped breaker on the furnace or air handler circuit.
- 3Pull the filter and look at it against a light. If it is grey and packed, replace it with the same size.
- 4Walk the house and confirm supply and return vents are open and not blocked by furniture or rugs.
How we compare to other HVAC companies
| Central Valley Air | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Written quote before any work | ✓ | ✕ | ✕ |
| Live answer seven days a week | ✓ | ✕ | ✓ |
| Every major brand, gas or electric | ✓ | ✓ | ✕ |
| Independent, no manufacturer quotas | ✓ | ✕ | ✓ |
| Crews familiar with homes like yours | ✓ | ✕ | ✓ |
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.Furnace Repair — quick answers
My furnace will not turn on at all. What should I do first?
Check the thermostat batteries and setting, then look for a tripped breaker, then check the filter. If all three look fine, call us. A furnace that gets power and a call for heat but stays silent usually has a control, safety switch, or ignition fault we need to test.
Do I need furnace repair or a replacement?
That depends on what failed, the age of the equipment, and whether the heat exchanger is intact. A single ignitor or flame sensor is a straightforward repair. A cracked heat exchanger or a failed compressor on a package unit changes the math, and we will show you what we found.
What does a burning smell from the vents mean?
A light dusty smell on the first cold morning is usually dust burning off the heat exchanger and fades in an hour. A sharp electrical or plastic smell is different. Shut the system off at the thermostat and call us before running it again.
I smell gas near the furnace. What now?
Leave the building immediately, take everyone with you, and call 911 or your gas utility from outside. Do not flip switches or use anything that sparks. Once the utility has made the home safe, call us and we will inspect the furnace and gas train.
Why does my electric furnace trip the breaker?
Electric heat draws hard, so a failing heat strip, a stuck sequencer, a weak breaker, or a blower motor pulling high amps can all trip it. Reset it once. If it trips again, leave it off and call us rather than resetting repeatedly.
How long does a furnace repair visit take?
Most diagnostics run under an hour, and common parts like ignitors, flame sensors, capacitors, and limit switches are often replaced the same visit. Control boards, blower motors, and inducer assemblies sometimes need ordering, and we will tell you the timeline before we leave.
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.
- 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.
Furnace Repair
Small faults become big ones on a schedule of their own
Describe the symptoms and we'll book the visit — takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
Rather not call? Get a free quote →
