The short answer
EliteAir Heating & Cooling repairs and installs furnaces, AC, heat pumps and ductless mini-splits in North Fair Oaks, an unincorporated part of San Mateo County about 19 miles from San Jose. We also service ducts and indoor air quality, and plan around county permit steps.
North Fair Oaks is an unincorporated community in San Mateo County, roughly 19 miles northwest of our San Jose base. Because it has no city government of its own, county processes apply to things like equipment replacement permits, and it is worth having a contractor who expects that rather than one who is surprised by it. Many houses here are compact, set on narrow lots, and have seen additions, garage conversions or second units over the decades. Those layouts create very specific heating and cooling problems, and they are the core of what EliteAir Heating & Cooling handles in this neighborhood.
Before you call: a quick self-check
A few minutes of checking can save a visit, or at least help us bring the right parts. Try these first:
- Confirm the thermostat is set to heat or cool and the batteries, if any, are fresh
- Look at the furnace filter; a gray, matted filter can shut a system down on overheat
- Check the breaker for the outdoor unit and the switch beside the furnace
- On a gas furnace, note whether you hear the igniter click or see a flame before it stops
- On a heat pump, see whether the outdoor fan spins and whether there is heavy frost on the coil
Small homes, added rooms and uneven comfort
The most frequent complaint we hear here is that one part of the house never matches the rest. A back bedroom added years ago may hang off the end of a long, thin duct run. A converted garage might have no supply at all and rely on a space heater. A second unit at the back of the lot may share nothing with the main house.
Ductless mini-splits are often the cleanest answer in these cases. A single outdoor unit can serve one or more indoor heads, each with its own controls, and the installation needs only a small hole through the wall for the refrigerant lines. For the main house, sealing and resizing ducts or adding a return can bring a cold room back into line without replacing the furnace.
Repair work we handle in North Fair Oaks
On the heating side, we repair forced-air furnaces, older wall and floor furnaces, and heat pumps. Typical fixes include igniters, flame sensors, pressure switches, inducer and blower motors, control boards and gas valves. On the cooling side, we diagnose refrigerant leaks, failed capacitors, burned contactors, frozen coils and blocked drains.
The Santa Clara Valley and the bayside Peninsula share a Mediterranean pattern of dry summers and mild, damp winters. North Fair Oaks sits closer to the Bay than the hot inland and southern parts of the valley, so systems here are rarely pushed to extremes. Failures tend to come from age, dirt and poor airflow rather than raw heat, which means maintenance pays off well.
Replacing equipment: furnace, heat pump or both
When repair no longer makes sense, we size the replacement to the house instead of matching the old nameplate. For many compact homes, a heat pump is a sensible step because it handles both heating and cooling in one system. Bay Area Air District rules do not require you to replace a working furnace, and they apply only when a furnace fails or is replaced. Under Rule 9-4, gas furnaces manufactured from 2029 must meet a zero-NOx standard, so a heat pump is where most future replacements will land.
We also handle the county permit paperwork that comes with equipment changes in unincorporated San Mateo County and schedule any inspection with you. For incentives, BayREN and your local clean energy provider list current heat pump programs; we confirm what is available before quoting. The federal 25C credit ended for installations after 2025.
Air quality in tight quarters
Smaller homes with more people in them collect moisture, cooking fumes and dust faster. Upgrading the filter, sealing leaky returns, cleaning ducts after a remodel and adding balanced ventilation are all practical improvements. We are also nearby in Los Altos Hills, Mountain View, Los Altos, Sunnyvale and Cupertino.