Furnace Not Heating? We'll Get Your Home Warm — Fast.
Expert furnace and heating repair for East Bay homeowners — ignition failures, heat exchanger issues, no heat, blower problems, and gas valve faults. Certified technicians, upfront pricing, most repairs in a single visit.
Book an Appointment
Pick a day & time if you like — or just leave your details and we'll call to schedule.
Or call (510) 227-8383 directly
Sound Familiar?
If your furnace isn't keeping up, we've seen it before. Our certified technicians diagnose the issue fast and fix it on the first visit whenever possible.
- Furnace blowing cold air
- System won't turn on
- Frequent short cycling
- Burning or gas smell
- Loud banging or rattling
- Pilot light or ignitor won't stay lit
Common Furnace Problems We Repair
Ignition & Pilot Failures
A failed igniter, flame sensor, or pilot assembly is one of the most common reasons a furnace won't fire. We test and replace the faulty component to restore reliable startup.
Cracked Heat Exchanger
A cracked heat exchanger can leak carbon monoxide and is a serious safety hazard. We inspect it carefully and explain your safest path forward — repair or replacement.
Blower Motor Problems
If the furnace fires but no warm air reaches your vents, the blower motor or capacitor may be failing. We test the motor, bearings, and wiring to get airflow back.
Faulty Gas Valve
A malfunctioning gas valve can prevent the burners from lighting or cause inconsistent heat. We verify gas pressure and valve operation against manufacturer specs.
Dirty or Failing Sensors
A dirty flame sensor or limit switch will shut the furnace down as a safety measure. Cleaning or replacing the sensor often restores normal operation quickly.
Thermostat & Control Issues
Sometimes the furnace is fine and the real culprit is a miswired or failing thermostat causing no heat, short cycling, or uneven temperatures.
If You Smell Gas or Suspect Carbon Monoxide
Leave your home immediately and call 911 or your gas utility from outside. Don't use light switches, phones, or any electronics inside. Once you're safe, call us and we'll prioritize your visit.
What Does Furnace Repair Cost?
Most common repairs — igniters, flame sensors, capacitors, thermostats — run $150–$500. After diagnosis, you get a firm price in writing before any work begins. No surprises, no pressure, and no "while we're here" upselling.
What to Expect During a Service Call
- 1
Safety & System Inspection
We check the heat exchanger, gas connections, electrical components, and venting to make sure the system is safe before anything else.
- 2
Diagnosis
Following the furnace sequence of operation, we pinpoint exactly which component failed and explain it to you in plain language.
- 3
Repair & Testing
We complete the repair, then run the furnace through a full heating cycle to confirm proper ignition, airflow, and temperature rise.
- 4
Recommendations
If we spot anything that could cause a future breakdown, we'll let you know — with no pressure to commit on the spot.
Why Bay Area Homeowners Choose Vargas HVAC
Same-Day Repairs
Most calls completed in a single visit. Our trucks carry common furnace parts.
Safety-First Diagnostics
Every visit includes a carbon monoxide and heat exchanger safety check.
Licensed & Insured
California Contractor License #1145667. Fully insured for your peace of mind.
We Clean Up After Ourselves
We tidy up the mess we make before we leave. Every visit.
Need Your Furnace Fixed Fast?
Our certified technicians carry common furnace parts on every truck for fast, same-visit repairs. We service all major brands.
Furnace Repair Questions, Answered
Straight answers — no jargon, no pressure.
How fast can you come out?
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Most days we can be at your home within a few hours. Call (510) 227-8383 to confirm same-day availability — and if you smell gas, leave the home and call 911 or your gas utility first.
How much does furnace repair cost?
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Most common repairs (igniters, flame sensors, capacitors, thermostats) run $150–$500. We give you a firm price before any work begins.
Should I repair or replace my furnace?
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If your furnace is over 15 years old and facing a major repair like a cracked heat exchanger or failed blower, replacement is often the smarter investment. We'll give you honest numbers for both options — no pressure either way.
Is it safe to keep running a furnace that's acting up?
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If you notice a burning smell, soot, a yellow burner flame, or your CO detector goes off, shut the system down and call us right away. Those can signal a combustion or carbon monoxide problem that needs immediate attention.
Do you service my brand?
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Yes — we repair all major furnace brands including Carrier, Trane, Lennox, Goodman, Rheem, York, Bryant, and more.
What areas do you serve?
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Livermore, Pleasanton, Dublin, Fremont, San Leandro, Hayward, Oakland, Milpitas, San Jose, and Tracy.