The short answer
FrostPoint AC Repair diagnoses and repairs gas furnaces, heat pumps, thermostats, and ductwork in Monte Sereno homes, working from our San Jose base about 7 miles away. A working furnace never has to be replaced to meet Bay Area Air District rules, so repair is often the practical choice when the system is otherwise in good shape.
Monte Sereno winters are mild by most standards, but the damp nights and chilly mornings are when a furnace or heat pump problem shows up. FrostPoint AC Repair is based in San Jose, about 7 miles east, and we repair gas furnaces, heat pumps, and the ductwork and controls that connect them. This page explains what heating repair looks like for Monte Sereno homes, which problems we see most often, and how current Bay Area rules affect whether repair or replacement makes sense.
Heating problems we fix in Monte Sereno homes
The Santa Clara Valley has a Mediterranean climate with dry summers and mild, damp winters. Many heating systems here sit idle for months and then run hard on cold nights. That on-and-off pattern brings out problems that built up quietly over the off-season, such as dust on burners and sensors, worn igniters, and weak capacitors.
When you call, tell us what you are noticing. A specific symptom helps us bring the right parts and spend less time guessing. These are the calls we handle most often:
- Furnace runs but blows cool or lukewarm air
- No heat at all, or the system won't start when the thermostat calls
- Furnace starts, then shuts off after a few minutes (short cycling)
- Burning smell that lingers past the first few minutes of the season
- Banging, squealing, rattling, or loud clicking from the unit or ducts
- Heat pump stuck in defrost, iced coils, or weak heat on cold mornings
- Some rooms much colder than others
- Thermostat that doesn't respond, or a system that won't turn off
How a heating repair visit works
We start by confirming the basics: thermostat settings and wiring, power to the unit, the filter, and gas supply on a furnace. Many no-heat calls come down to a clogged filter that tripped a safety limit, or a thermostat issue, and we would rather find that first than replace parts you don't need.
From there we test the components tied to your symptom. On a gas furnace that usually means the igniter, flame sensor, pressure switch, inducer motor, blower, and control board. On a heat pump we check refrigerant-side performance, the reversing valve, the defrost controls, and the outdoor fan and compressor. We also check for safe venting and look for signs of a cracked heat exchanger, because a furnace problem can be a safety problem as well as a comfort problem.
Before any repair, we explain what failed and why, describe the options, and get your approval. If a part needs to be ordered, we tell you so and make sure the system is left in a safe state until we return.
Hillside homes, older systems, and uneven heat
Many Monte Sereno homes are larger, spread-out houses on sloped lots, and some have furnaces in attics, crawlspaces, or garages with long duct runs. In those layouts, cold bedrooms are often a duct issue, not a furnace issue. Disconnected or crushed flex duct, leaky joints in an unconditioned attic, or closed dampers can starve rooms at the far end of the house.
We check airflow at the registers and inspect the ductwork we can reach. When the fix is sealing or reconnecting a duct, that is usually much simpler than adding equipment.
Repair or replace under current Bay Area rules
Under Bay Area Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. These rules do not require you to replace working equipment. They apply only when an existing furnace fails or is replaced.
That means a repairable furnace can keep running. If your furnace is aging and needs a major part, we will lay out the repair alongside the replacement option so you can plan, rather than make a rushed decision on a cold night.
If you are weighing a heat pump, note that the federal Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025, and it is not available for 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 a quote.
Serving Monte Sereno and nearby cities
Monte Sereno is in Santa Clara County, a short drive from our San Jose base. We also handle heating repair in nearby Los Gatos, Saratoga, Campbell, Cupertino, and Santa Clara, so if you have a rental or a family member's home in one of those cities, we can help there too.
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