The short answer
PrimeAir HVAC repairs gas furnaces, heat pumps, and thermostats in Atherton, CA, and offers 24/7 emergency service. Under Bay Area Air District rules, a working furnace never has to be replaced, so repair is usually the first option worth considering. If replacement makes more sense, we'll explain how upcoming rules and current incentives affect your choice.
When the heat stops working in your Atherton home, you want a clear answer about what failed and what it takes to fix it. PrimeAir HVAC Repair Service sends technicians from our Fremont base, about 11 miles northeast, to homes throughout Atherton (94027). We repair gas furnaces, heat pumps, and the thermostats and ductwork that connect them. We also offer 24/7 emergency service for cold nights that can't wait until morning.
Heating Problems We Fix in Atherton Homes
Most heating calls come down to a handful of problems. Systems often sit idle through the dry summer months, and the first cool, damp evenings of fall tend to expose worn parts. A system that ran fine last spring can struggle the first week you turn it back on.
If your home has more than one system or zone, one area may stay warm while another stays cold. That usually points to a specific component, thermostat, or damper rather than the whole system. We diagnose each unit on its own so you're not paying to fix parts that are still working.
- Furnace won't ignite, or the burners light and then shut off
- System short cycles, turning on and off every few minutes
- Blower runs but the air from the vents is cool
- Some rooms are noticeably colder than others
- Heat pump stuck in defrost, iced over, or blowing lukewarm air
- Banging, squealing, or rattling from the furnace or air handler
- Burning or electrical smells when the heat comes on
- Thermostat that's blank, unresponsive, or doesn't match the room temperature
What Happens During a Repair Visit
Our technician starts by asking what you've noticed: when the problem started, whether it comes and goes, and any sounds or smells. Then we inspect the system. That includes the ignition and flame sensor, the safety switches, the blower motor, the filter and airflow, and the electrical connections. On heat pumps, we also check refrigerant-side performance and the defrost controls.
Before any work begins, we explain what we found and what the repair involves. If more than one approach is reasonable, we lay out the options so you can decide. Many common repairs can be finished the same visit. When a part has to be ordered, we tell you that up front and make sure the system is left in a safe condition.
Repair or Replace? What the Bay Area Rules Mean for You
Atherton is in San Mateo County, within the Bay Area Air District. Some homeowners worry that new rules will force them to tear out a furnace that still works. They won't. 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. Repairing your current furnace is allowed.
The rules do matter for future planning. Under 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. If your furnace is aging and needs frequent repairs, it may be worth thinking now about whether your next system will be a heat pump.
On cost, keep two points in mind. 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.
When to Call for Emergency Heating Service
We offer 24/7 emergency service. Call us any time if your heat is out and someone in the home is elderly, very young, or has a health condition affected by cold. You should also call right away if the furnace is making loud new noises, tripping breakers, or producing a burning smell.
If you smell gas, don't try to troubleshoot the furnace. Leave the house, then call your gas utility or 911 from outside. Once the utility has confirmed it's safe, we can come out to diagnose and repair the equipment.
Serving Atherton and Nearby Peninsula Communities
We handle heating repair throughout Atherton's 94027 ZIP code. We also serve neighboring communities, including Menlo Park, East Palo Alto, Redwood City, San Carlos, and Mountain View. When you call, have your system type ready if you know it (gas furnace, heat pump, or both) along with a short description of what's happening. That helps us arrive prepared.
More services in Atherton
- AC Repair in Atherton
- Heat Pump Installation in Atherton
- AC Installation in Atherton
- Furnace Repair in Atherton
