The short answer
MasterFix repairs furnaces, heat pumps, and wall heaters in Los Gatos homes and offers 24/7 emergency service. Bay Area Air District rules do not require you to replace a working furnace, so repair is often a reasonable choice. If replacement makes more sense, we explain how the rules apply to your home.
When the heat quits on a cold Los Gatos night, you want it diagnosed correctly and fixed without guesswork. MasterFix HVAC Repair Service repairs gas furnaces, heat pumps, and wall and floor heaters in homes across Los Gatos, in both the 95030 and 95032 ZIP codes. We're based in San Jose, about 6 miles northeast, so getting to you is a short drive. We also offer 24/7 emergency service for nights when a home can't wait until morning.
Heating Problems We See in Los Gatos Homes
The Santa Clara Valley has mild, damp winters, so many Los Gatos furnaces sit idle for months and then run hard when a cold snap arrives. Long idle stretches can let dust settle on burners and flame sensors. Filters often get forgotten until the system starts struggling, and minor wear tends to show up on the first cold morning of the season.
Los Gatos also has a wide mix of homes, from older houses with original ductwork and wall heaters to newer homes with heat pumps or high-efficiency furnaces. Each type fails in its own way, and we diagnose what's actually in your home instead of applying a one-size answer.
- Furnace runs but blows cool or lukewarm air
- Burners light, then shut off after a few seconds
- Heat pump stuck in defrost, iced over, or not switching to heat
- Short cycling, rattling, squealing, or banging from the unit
- Some rooms warm while others stay cold
- Thermostat calls for heat and nothing happens
How We Diagnose and Repair Your Heating System
A good repair starts with finding the actual cause. Our technician checks the thermostat, power, and gas supply, then works through ignition, flame sensing, safety switches, the blower, and airflow. On heat pumps we check the reversing valve, defrost controls, refrigerant circuit, and outdoor unit. We also look for venting and combustion problems on gas equipment, because those affect safety as well as comfort.
Before we do any work, we explain what we found in plain terms and tell you your options. If a part needs to be ordered, we tell you so, and if it's safe we'll make the system as usable as possible in the meantime.
Repair or Replace? What the Air District Rules Mean for You
Many Los Gatos homeowners have heard about the Bay Area Air District's appliance rules and worry they must replace their furnace. They don't. The rules do not require replacing working equipment. They apply only when an existing furnace or water heater fails or is replaced. If your furnace can be repaired safely and sensibly, repairing it is allowed.
Looking ahead, gas furnaces manufactured from 2029 must meet a zero-NOx emission standard under Rule 9-4. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. If your furnace is aging and needs frequent repairs, this timeline is worth weighing. We'll give you a straight assessment of whether a repair is a good investment or whether planning a replacement makes more sense.
If you're also thinking about your water heater, note that 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 that replacement.
Heat Pump Incentives: What's Available Now
The federal Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025. It is not available for new installations after that date. Bay Area 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 including it in any quote.
Scheduling Heating Repair in Los Gatos and Nearby
We serve all of Los Gatos, along with Monte Sereno, Campbell, Saratoga, Cupertino, and Santa Clara. For routine problems we schedule a visit at a time that works for you. For a no-heat emergency, a gas smell after you've left the house and called your gas utility, or a system that's tripping breakers, our 24/7 emergency service is available.
To help us prepare, have the make of your furnace or heat pump handy if you can find it, and note any error codes, blinking lights, or unusual sounds.
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