The short answer
Prime Choice HVAC Repair Service repairs furnaces and heat pumps in Fremont homes. We diagnose the problem, explain what failed and your options before starting work, and help you weigh repair against replacement under current Bay Area Air District rules. Those rules do not require you to replace a furnace that still works.
Fremont winters rarely bring hard freezes, but the damp, chilly mornings from late fall through early spring are enough to make a working heater matter. When your heat stops, blows cold air, turns on and off too often, or starts making new noises, Prime Choice HVAC Repair Service sends a technician up from our San Jose base, about 12 miles south, to find the cause and fix it. We repair gas furnaces, heat pumps, and the thermostats and ductwork that connect them, in homes across the 94536, 94538, 94539, and 94555 ZIP codes.
Common Heating Problems in Fremont Homes
Fremont winters are mild, so many furnaces sit idle for months. That is why problems often show up on the first cold night of the season. Dust settles on burners and flame sensors, filters clog over the summer, and small issues that were easy to ignore turn into a no-heat call. Heat pumps run year-round, so their wear tends to show up differently, often as weak heating or long run times.
If you smell gas (a rotten-egg odor), leave the house right away. Call your gas utility or 911 from outside before you call us.
- The furnace clicks or lights, then shuts off within seconds. This is often a dirty flame sensor or an ignition problem.
- The blower runs, but the air coming from the vents is cool.
- The system short-cycles, turning on and off every few minutes.
- A heat pump runs constantly without warming the house, or ices up and doesn't defrost.
- A burning-dust smell lasts longer than the first few minutes of the season.
- You hear rattling, squealing, or a loud boom when the system starts.
- Some rooms stay warm while others stay cold, which can point to duct leaks or blower trouble.
How a Heating Repair Visit Works
Our technician starts by asking what you've noticed and when it began. Details like a new noise, a smell, or a recent power outage often narrow things down quickly.
On a furnace, we check the thermostat, power, gas supply, ignition, flame sensor, safety switches, blower, and filter. On a heat pump, we check the outdoor unit, refrigerant circuit, defrost controls, and backup heat. We also look at the flue and venting, because a repair should leave your system running safely, not just running.
Before any work begins, we explain what failed and what it takes to fix it. We also point out any parts that look close to failing, so you can decide what to do now and what can wait. If a part has to be ordered, we tell you up front and make sure you understand where things stand in the meantime.
Repair or Replace? What Bay Area Rules Mean for Fremont
Fremont is in Alameda County, which falls under the Bay Area Air District. Its appliance rules do not require you to replace a furnace that still works. They apply only when existing equipment fails or is replaced. If your furnace can be repaired safely and sensibly, repairing it is a reasonable choice.
Planning ahead still helps. Under Rule 9-4, natural gas furnaces manufactured starting in 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. If your furnace is older and needs a major repair, we'll lay out repair and replacement side by side so you can decide with the full picture.
The federal 25C tax credit for heat pumps applied only to systems placed in service before December 31, 2025. It is not available for new installations. Homeowners can still check BayREN and their local clean energy provider for current heat pump and electrification incentives. Amounts and availability change by funding cycle, so we confirm the current offer before quoting it.
If you're also thinking about your water heater, the zero-NOx date for small water heaters under Rule 9-6 was set for 2027. The Air District Board is considering amendments in November 2026 that could delay it, so check the current rule before planning a replacement.
Quick Checks Before You Call
A few simple checks can sometimes bring the heat back or rule out easy causes. If none of them work, turn the system off and schedule a visit. Resetting it again and again can make some problems worse.
- Make sure the thermostat is set to Heat and the setpoint is above the current room temperature. Replace the thermostat batteries if it uses them.
- Check the breakers for the furnace or air handler and for the outdoor heat pump unit.
- Confirm the furnace power switch is on. It usually sits near the unit and looks like a regular light switch.
- Look at the air filter. A badly clogged filter can cause overheating and shutdowns.
- Make sure the furnace door panel is fully closed. A safety switch keeps the furnace off if the panel is loose.
- For a heat pump, clear leaves and debris from around the outdoor unit.
Serving Fremont and Nearby Cities
We provide heating repair throughout Fremont, including the 94536, 94538, 94539, and 94555 ZIP codes. We also serve nearby Milpitas, Sunnyvale, Santa Clara, Mountain View, and Los Altos. When you contact us, tell us what the system is doing and roughly how old it is. That helps our technician arrive prepared.
More services in Fremont
- AC Repair in Fremont
- Heat Pump Installation in Fremont
- AC Installation in Fremont
- Furnace Repair in Fremont