The short answer
FrostPoint AC Repair diagnoses and repairs gas furnaces, heat pumps, and other home heating systems in Los Altos, CA. Bay Area Air District rules do not require you to replace a working furnace, so repair is often the sensible choice. If replacement does make sense, we'll explain current rules and incentives before you decide.
Los Altos winters are mild by most standards, but they are damp, and a cold, wet night is when a furnace or heat pump tends to show its weaknesses. FrostPoint AC Repair drives up from our San Jose base, about 14 miles southeast, to diagnose and repair heating systems in homes across the 94024 ZIP code. Our goal is simple: find out exactly why your home isn't warming up, explain it in plain language, and fix what's broken without pushing work you don't need.
Common Heating Problems We See in Los Altos Homes
The Santa Clara Valley's climate means many heating systems sit idle for months, then run hard through a stretch of chilly, damp weather. That on-and-off pattern can expose parts that wore out quietly over the summer. Dust settles on burners and sensors, filters get forgotten, and thermostats that worked fine last spring suddenly stop calling for heat.
When you call us, these are the issues we most often track down:
- Furnace runs but blows cool or lukewarm air
- Burners light, then shut off after a few seconds
- Igniter or pilot problems that keep the system from starting
- Heat pump stuck in the wrong mode or not switching to heat
- Short cycling, where the system turns on and off too often
- Rattling, squealing, or banging from the blower or ductwork
- Rooms at the far end of the house staying colder than the rest
- Thermostat not responding or showing blank or error readings
How a Heating Repair Visit Works
We start by asking what you've noticed: when the problem started, whether it's constant or comes and goes, and any sounds or smells. Then we check the system step by step, from thermostat and power supply to ignition, flame sensing, airflow, and safety controls. For heat pumps, we also look at the outdoor unit, refrigerant-related symptoms, and the defrost cycle.
Before any repair work begins, we tell you what we found and what we recommend. If there are several options, such as a part replacement now versus a larger repair later, we lay them out so you can choose. We don't start work you haven't approved.
Repair or Replace? Know the Local Rules First
Many Los Altos homeowners have heard about new Bay Area Air District rules and worry they'll be forced to tear out their furnace. That isn't the case. The Air District's appliance rules do not require replacing working equipment. They apply only when an existing furnace or water heater fails or is replaced.
Looking further ahead, under the Air District's furnace rule, natural gas furnaces manufactured starting in 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when they replace a furnace after that date. If your furnace is aging, that timeline is worth factoring into a repair-or-replace decision, but it is not a reason to replace a system that can be repaired reliably today.
If you're considering a heat pump, note that the federal Energy Efficient Home Improvement Credit (25C) only covered qualifying heat pumps placed in service before December 31, 2025, so it isn't available for new installations now. Local options may still exist: Bay Area homeowners can check BayREN and their local clean energy provider for heat pump and electrification incentives. Because amounts and availability change by funding cycle, we confirm the current offer before including it in any quote.
Simple Steps to Try Before You Call
Some heating problems have quick fixes you can check yourself. Trying these first can save you a service visit, or help us diagnose the problem faster if you still need us.
- Confirm the thermostat is set to Heat and the setpoint is above room temperature
- Replace thermostat batteries if the display is dim or blank
- Check the furnace filter and replace it if it's clogged
- Make sure the furnace's power switch is on and the breaker hasn't tripped
- Check that supply vents and return grilles aren't blocked by furniture or rugs
- If you smell gas, leave the house and call your gas utility right away; don't try to fix it yourself
Serving Los Altos and Nearby Communities
Los Altos sits in Santa Clara County, and we serve homes throughout the 94024 area along with neighboring communities including Mountain View, Sunnyvale, Cupertino, Santa Clara, and Saratoga. Whether your home has an older gas furnace in the attic, a forced-air system in a crawlspace, or a newer heat pump, we'll work through the problem carefully and leave you with a clear picture of your system's condition.
More services in Los Altos
- AC Repair in Los AltosLocal service & repairs
- Heat Pump Installation in Los AltosLocal service & repairs
- AC Installation in Los AltosLocal service & repairs
- Furnace Repair in Los AltosLocal service & repairs