The short answer
ReliableAir HVAC Services serves Palo Alto, CA in 94301, 94303, 94304 and 94306. We repair furnaces and AC, install heat pumps and mini-splits, and help homeowners weigh repair against replacement.
Palo Alto homeowners tend to arrive with specific questions. Should a twenty-year-old furnace be repaired one more time or retired? Will a heat pump keep a drafty mid-century house warm on a damp January night? Can air conditioning go into a home that was built without it? ReliableAir HVAC Services travels about eleven miles west from San Jose to answer those questions in person across ZIP codes 94301, 94303, 94304 and 94306. We repair heating and cooling equipment, install new systems, clean and seal ducts, and look after indoor air quality, and we lay out the trade-offs so you can decide with real information instead of a sales pitch.
Older Houses, Newer Expectations
A large share of Palo Alto's housing went up in the middle of the last century, and the heating systems in those homes were designed for a different era. Some mid-century houses, including many Eichler-style homes, were built with radiant heat running through the floor slab and no ductwork at all. Others have gravity furnaces long since converted, or forced-air units squeezed into closets with ducts snaking through shallow attics.
Those layouts are not a problem in themselves, but they shape what upgrades make sense. A house with tight attic space and no return ducts may be a poor match for a big central air conditioner, while a ductless system or a carefully planned ducted heat pump could work well. We start by looking at what you have rather than assuming a standard box fits every home.
Repair or Replace: How We Help You Decide
When equipment breaks down, we diagnose the failure first and then give you the facts that matter for the decision.
- The age and overall condition of the unit, including the heat exchanger on a furnace and the compressor on an AC
- Whether the failed part is a routine wear item, like a capacitor or igniter, or a sign of deeper trouble
- How often the system has needed service lately and whether parts are still easy to find
- Whether the home's comfort complaints would remain even after a repair, such as one wing that never heats evenly
- How a replacement would fit your plans for electrification, solar or a future remodel
Heat Pumps on the Mid-Peninsula
The Santa Clara Valley climate is Mediterranean, with dry summers and mild, damp winters, and Palo Alto sits on the cooler, Bay-influenced side of that range. Those conditions are well within what a modern heat pump handles comfortably. Because one system both heats and cools, it is often the simplest way to add air conditioning to a house that never had it.
Regulations are moving the same direction. Under Bay Area Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard, which effectively points future furnace replacements toward heat pumps. The rules do not require anyone to remove working equipment; they apply only when a furnace or water heater fails or is replaced.
If you are budgeting, note that the federal 25C credit only covered qualifying heat pumps placed in service before December 31, 2025, so it does not apply to new projects. BayREN and your local clean energy provider may have incentives available, and since those change with each funding cycle, we verify the current terms before quoting them.
Ductless Systems, Ducts and Air Quality
Ductless mini-splits are a natural fit for slab-floor homes, garden studios and second-story additions. Indoor heads mount high on a wall or in a ceiling cassette, each with its own control, so a home office can stay cool while bedrooms are left alone.
For homes with existing ducts, we inspect for disconnected joints, crushed flex runs and leaky returns that pull attic dust into the living space. Cleaning and sealing those ducts, adding a better filter cabinet or introducing balanced ventilation can make a noticeable difference for anyone sensitive to dust or seasonal pollen.
Where Else We Work Near Palo Alto
The same crews serve Los Altos Hills and Los Altos to the south, Mountain View and Sunnyvale along the Bay, and Cupertino to the southeast. Tell us your ZIP code and what you are noticing, whether that is a strange noise, a cold room or a furnace that will not light, and we will schedule a visit that fits your week.
ZIP codes we serve
- 94301
- 94303
- 94304
- 94306
Services in Palo Alto
- AC Repair in Palo Alto
- Heating Repair in Palo Alto
- Heat Pump Installation in Palo Alto
- AC Installation in Palo Alto
- Furnace Repair in Palo Alto