Voted #1 Furnace Service In Hayward
Heating Installation and Repair in the Bay Area, San Francisco, CA
Airstars HVAC is the trusted provider of emergency heating and furnace repair services in Hayward, Fremont, Union City, and the entire Bay Area.
When the temperature drops, you need a heating system that works. Whether your furnace is making strange noises, blowing cold air, or refusing to turn on, our team is ready to help. We provide 24/7 emergency heating repair to ensure your family stays warm and safe.
Our NATE-certified technicians are experts in diagnosing and fixing all types of heating systems, including gas furnaces, wall heaters, heat pumps, and ductless mini-splits. We don’t just fix the symptom; we solve the problem.
6 Signs Your Heater Needs Professional Repair
Ignoring a furnace problem can be dangerous. Gas furnaces produce Carbon Monoxide (CO), and a malfunction can put your family at risk. According to the CDC (Centers for Disease Control), regular heating maintenance is the #1 way to prevent accidental CO exposure in the home.
Call us immediately if you notice:
1. Blowing Cold Air
If your furnace is running but the air coming out of the vents is cool, you may have a dirty flame sensor, a pilot light issue, or a problem with the gas supply.
2. Loud or Unusual Noises
- Banging/Booming: A dangerous ignition delay. The gas builds up before lighting, causing a small explosion. Call us immediately.
- Squealing: A slipped belt or dry motor bearing.
- Rattling: Loose panels or a cracked heat exchanger.
3. Yellow Pilot Light
A healthy furnace flame should be blue. A yellow or flickering flame often indicates incomplete combustion, which can lead to a carbon monoxide leak.
4. Frequent Cycling (Short-Cycling)
If your heater turns on and off every few minutes, it is overworking. This is often caused by a clogged air filter or an overheating safety switch tripping the system.
5. Weak Airflow
If you can barely feel the heat coming from your registers, your blower motor may be failing, or your ductwork may be disconnected.
6. High Energy Bills
If your PG&E bill has spiked without a change in usage, your furnace is losing efficiency. This often happens when internal parts wear out and the system has to run longer to reach your set temperature.
The Airstars Repair Process: Safety First
We treat your home like our own. Our repair process focuses on safety, transparency, and speed.
- Safety Inspection & Diagnostic ($69): We perform a 21-point safety check, including testing for carbon monoxide leaks and inspecting the heat exchanger for cracks.
- Upfront Pricing: We explain the issue clearly and provide a flat-rate price for the repair. You approve the cost before we start.
- Expert Repair: Our trucks are stocked with universal parts (ignitors, flame sensors, control boards) so we can fix most furnaces on the spot.
- System Test: We don’t leave until we verify the system is cycling correctly and the air is warm.
Brands We Service
We are trained to repair all major heating brands found in California homes:
Williams / Cozy (Wall Heaters)
Carrier / Bryant / Payne
Trane / American Standard
Lennox / Armstrong
Rheem / Ruud
Goodman / Amana
York / Coleman
Our Achievements
Stay Warm and Safe This Winter in Hayward, Fremont, and the East Bay. Call Airstars
Don’t take chances with your heating system. Trust the experts at Airstars to keep your home comfortable and safe.
- Hayward
- Fremont
- San Leandro
- Union City
- Oakland
- And Surrounding Areas
$69 Furnace Tune-Up Special
What Our Clients Say About Us
★★★★★
I had problems with my heater not starting I call 5 companies and Airstars was the first to respond I make appointment for the same day and the technician came with parts same day and fix the heater good quality service, thank you
Miguel B.
★★★★★
I have nothing but the highest praise for Juan. He was diligent, knowledgeable, friendly, polite, shared some great info. I had initially hired Airstars to just replace a thermostat in an old oven but ended up purchasing a completely new one. No regrets. They made it painless. Will 100% hire them again for whatever appliance needs.
EM S.
★★★★★
Rafael and team have been very responsive, thorough, and accommodating to ensure my HVAC and ductwork are back in better shape than ever. They took pictures and explained everything to me to ensure I knew every step and the extra effort they put in to create a great customer experience!
Dustin S.
Frequently Asked Questions About Heating Repair
How much does furnace repair cost in Hayward? Repair costs depend on the part needed. A simple flame sensor cleaning or capacitor replacement is inexpensive, while a blower motor or control board replacement costs more. We offer a $69 diagnostic to identify the exact issue so you can make an informed decision.
Is a cracked heat exchanger dangerous? Yes, extremely. The heat exchanger separates the breathing air from the combustion gases. If it cracks, carbon monoxide can leak into your home. If we find a crack, we are required by law to shut down the unit for your safety.+1
How often should I service my furnace? We recommend a yearly heating tune-up in the fall. Regular maintenance ensures your warranty stays valid and prevents breakdowns during the coldest nights of the year.
Do you fix floor furnaces and wall heaters? Yes! Many older homes in San Leandro, Castro Valley, and Oakland still use these units. We are one of the few local companies with the expertise to service and repair them safely..