The short answer
PrimeAir HVAC Repair Service repairs gas furnaces in Menlo Park homes. We diagnose problems like no heat, short cycling and ignition failures before replacing any parts. We offer 24/7 emergency service, and Bay Area Air District rules do not require you to replace a furnace that still works.
When a furnace quits on a cold, damp Menlo Park night, you want a clear answer about what's wrong and what it will take to fix it. PrimeAir HVAC Repair Service repairs gas furnaces in homes throughout Menlo Park (94025), from the first sign of trouble through a full safety check. We come over from our base in Fremont, about 8 miles northeast, and we offer 24/7 emergency service for no-heat calls and safety concerns. Below is what we look for, how a repair visit works, and how current Bay Area rules affect your choices if your furnace is getting older.
Furnace problems we see in Menlo Park homes
Many furnaces here sit idle for much of the year, then run hard during stretches of chilly weather. Because of that on-and-off pattern, problems often show up the first time the heat comes on in fall. Dust settles on burners and sensors, filters get forgotten, and small parts that worked fine last winter can fail at startup.
Some of these are simple fixes. Others point to a failing inducer motor, control board, igniter or limit switch. We test before we replace anything, so you aren't paying for parts you don't need.
- Furnace runs but blows cool or lukewarm air
- Burners light, then shut off after a few seconds, often caused by a dirty flame sensor
- No ignition at all, or repeated clicking without a flame
- Blower runs constantly or won't come on
- Short cycling, where the furnace turns on and off every few minutes
- Banging, squealing or rattling from the cabinet or ducts
- Uneven heat between rooms or floors
- A thermostat that doesn't seem to control the furnace
What happens during a furnace repair visit
We start by asking what you've noticed: when the problem started, any sounds or smells, and whether it happens constantly or comes and goes. Then we check the thermostat, filter, gas supply, ignition sequence, flame sensor, safety switches, blower and venting.
Once we find the cause, we explain it in plain terms and walk you through your options before any work begins. Many repairs can be finished on the first visit. If a part has to be ordered, we'll tell you how long it should take and whether the furnace can run safely in the meantime.
We also look at combustion and venting on every gas furnace call. A cracked heat exchanger or blocked flue can let carbon monoxide into the home, and you want problems like those found early.
Repair or replace? What Bay Area rules mean for you
Bay Area Air District appliance rules do not require you to replace a furnace that's working. They apply only when an existing furnace fails or is replaced. If your furnace can be repaired safely and reasonably, repair is still a normal choice.
Looking ahead, gas furnaces manufactured from 2029 must meet a zero-NOx emission standard under the Air District's Rule 9-4. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. If your furnace is older and needs frequent repairs, it can make sense to plan for that change now instead of during a no-heat emergency.
If you're considering a heat pump, keep in mind that the federal 25C tax credit only covered qualifying heat pumps placed in service before December 31, 2025. It is not available for new installations after that date. Local incentives may still help. BayREN and your local clean energy provider run programs that change by funding cycle, so we confirm what's currently offered before including it in any quote.
When to call right away
Some furnace problems shouldn't wait for a convenient appointment. PrimeAir offers 24/7 emergency service for Menlo Park homes. If you smell gas, leave the house first and call your gas utility or 911 from outside before calling us.
- You smell gas near the furnace or anywhere in the house
- Your carbon monoxide alarm goes off
- You see scorch marks, melted wiring or soot around the furnace
- The furnace trips a breaker repeatedly
- You have no heat and someone in the home is elderly, very young or ill
Serving Menlo Park and nearby communities
We work in homes across Menlo Park's 94025 ZIP code, from older houses with original ductwork to remodeled homes with updated equipment. Furnaces here may be installed in garages, attics, closets or crawlspaces, and we come prepared for tight access.
We also repair furnaces in nearby East Palo Alto, Atherton, Redwood City, San Carlos and Newark. If you're not sure whether we cover your street, just ask when you contact us.
More services in Menlo Park
- AC Repair in Menlo Park
- Heating Repair in Menlo Park
- Heat Pump Installation in Menlo Park
- AC Installation in Menlo Park

