The short answer
We repair gas furnaces in Campbell, including ignitors, flame sensors, inducer motors, blowers and control boards. Every visit includes a combustion and safety check, and you approve the repair before we begin.
Campbell winters are mild by national standards, but damp nights in December and January still drop low enough that a dead furnace makes a house uncomfortable fast. Because many local furnaces only run a few months each year, they often sit idle through summer and then fail on the first cold morning, when dust burns off the burners, a pilot will not light or an ignitor has finally cracked. EliteAir handles gas furnace repair throughout Campbell's 95008 ZIP code from our base about four miles away in San Jose. Below you will find the symptoms worth paying attention to, a few safety points, and what to expect when one of our technicians comes out to look at your furnace.
Signs your furnace needs attention
Furnaces rarely fail without warning. Most give hints for days or weeks before quitting entirely. If you notice any of the following, it is cheaper and safer to have it checked early.
- The burners light, then shut off within a few seconds and try again
- Air from the vents feels lukewarm even though the thermostat is calling for heat
- A rattle, squeal or booming sound when the burners ignite
- The blower runs constantly or never turns on
- A blinking light on the control board inside the furnace door
- A strong burning smell that lingers well past the first few minutes of the season
- Rooms at the far end of the house stay cold while the hallway is warm
Safety comes before comfort
If you smell gas, leave the house and call your gas utility from outside. Do not flip switches or try to relight anything. Likewise, if a carbon monoxide alarm sounds, get everyone outdoors and call for emergency help. Those situations need the utility or first responders before an HVAC company.
For everything else, it is fine to check the basics: a fresh filter, a thermostat set to heat, the furnace door properly closed so its safety switch is engaged, and the power switch near the unit turned on. Beyond that, leave the internal parts alone. A furnace has several safety controls that shut it down for good reasons, and bypassing them can be dangerous.
What our technician checks
We work through the furnace in the same order it starts up. First the thermostat call, then the inducer motor that clears the flue, the pressure switch that confirms draft, the hot surface ignitor or pilot, the gas valve, the flame sensor and finally the blower. Watching that sequence tells us exactly where it stops. Many Campbell furnaces sit in hall closets, garages or attics, and each location has its own issues, such as blocked combustion air in a tight closet or rodent damage to wiring in an attic.
We also inspect the heat exchanger area and the venting, measure temperature rise across the furnace, and check for carbon monoxide at the supply registers. If something is unsafe, we explain why and shut off the gas to the unit until it is fixed. If it is safe but worn, we tell you which parts are likely to need attention soon so you can plan ahead.
Older furnaces and the Air District rule
Some homes in Campbell still run furnaces that have been in place for decades. Parts for those units can be harder to find, and cracked heat exchangers become more likely with age. When a repair is not the sensible choice, it helps to know where the rules are heading. Under Bay Area Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard, which effectively steers future replacements toward heat pumps. The Air District does not require anyone to remove a working furnace, so a good repair today is still a perfectly reasonable choice.
If you do start thinking about a heat pump, BayREN and your clean energy provider may have incentives for electrification. Amounts change by funding cycle, so we confirm the current offer before including it in a quote. Our technicians also cover Monte Sereno, Los Gatos, Saratoga, Cupertino and Santa Clara.
More services in Campbell
- AC Repair in Campbell
- Heating Repair in Campbell
- Heat Pump Installation in Campbell
- AC Installation in Campbell