Do you actually come out to Los Altos, or is that too far from San Ramon?

Los Altos is a regular stop for us. We run the Peninsula as part of our normal service area, so there is no extra travel surcharge and scheduling is the same as anywhere else we cover.

Is Comfortmaker a reasonable choice for the older ducted homes in Los Altos?

It fits well. Most of the 1950s and 1960s ranch homes here already have duct systems sized for a standard split system, and Comfortmaker on the ICP-Carrier platform gives you solid equipment at a price that leaves room to spend on a good installation. The SoftSound furnace line is worth considering if the air handler is in a hallway closet or attached garage where noise carries into living space, which is common in that era of floorplan. Higher-tier models add communicating variable-speed, which pairs well with a two-stage heat pump if you want to lean on the heat pump and use the furnace as backup. What matters most for long-term performance in a home like that is the quality of the duct sealing and the installation itself.

What does the $75 diagnostic include, and what warranty covers the work afterward?

The $75 covers a full fault diagnosis: I pull board fault codes, run the system through its sequence of operation, measure pressures or electrical values as the failure requires, and identify the specific failed component. You get a written quote for the repair before anything is authorized. If you approve the repair, the $75 applies toward it. Completed repairs carry a 1-year warranty on both the part and the labor.

COMFORTMAKER · LOS ALTOS

Service · All Comfortmaker Models

Comfortmaker Heat Pump, AC & Furnace Repair · Los Altos, CA

Comfortmaker heat pump, AC, and furnace repair in Los Altos, where mild Bay-side winters still demand a furnace that lights clean and a condenser that handles the salt-tinged air.

$75 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Comfortmaker in Los Altos

Comfortmaker heating and cooling in Los Altos.

Los Altos sits in that Peninsula sweet spot where summers are warm enough for real AC use but nothing like the 100-degree heat a Tri-Valley system has to survive. The housing stock is a mix of 1950s and 1960s ranch-style homes in areas like North Los Altos, most of which were built with central ducted gas heat and later had AC condensers added in the backyard or side yard. Those condensers sit fairly close to the Bay, and salt-laden air from the Baylands a few miles east accelerates corrosion on electrical contacts, capacitors, and coil fins. That combination of aging ducted systems and coastal-adjacent air quality shapes most of the Comfortmaker work we see here.

Comfortmaker runs on the ICP-Carrier platform alongside Heil and Tempstar, which means the control board, igniter, inducer motor, and gas valve share engineering lineage with Carrier and Bryant equipment I work on regularly. When a SoftSound furnace comes up with a fault, I pull the board codes first and trace the actual failure path rather than swapping parts on a guess. One thing I always check on Peninsula installs is the inducer pressure switch: humidity and mild temperatures mean these systems sometimes run in shoulder-season conditions that mask a slow inducer decline until the switch finally refuses to close. On the cooling side, I measure capacitor microfarads before condemning a contactor, because weak capacitors are the most common reason a condenser here starts hard or trips the high-pressure limit.

Bay Area HVAC Service is our HVAC division, operating out of San Ramon with regular coverage across the Peninsula. Diagnostic fee is $75 and we credit that against the repair if you move forward. You get a written quote before I touch anything beyond the diagnostic. We carry EPA Section 608 Universal certification and work under CSLB license 1136642. Repairs are backed by a 1-year warranty; new installations carry 10 years on parts and 10 years on labor. If there are utility or state rebates that apply to your equipment, we confirm what they actually pay at estimate time.

Common repairs we do

What we close on the truck.

Cracked or Failed Hot Surface Igniter. The most common no-heat call on Comfortmaker furnaces is a silicon nitride igniter that has cracked or burned through. The furnace will attempt a light sequence, the inducer spins up, but the board logs an ignition failure and locks out after two or three tries. On SoftSound models the blower may still run in delay mode, which confuses homeowners into thinking there is airflow heat. I confirm the igniter resistance is out of spec, replace it with the correct ICP-family part, and verify the flame establishes within the trial period before closing the call.
Flame Sensor Carbon Buildup Causing Short Cycling. A flame sensor that has accumulated oxide buildup will pass just enough current to prove flame on the first few seconds, then drop out and shut the burner down. The furnace restarts, fails again, and eventually locks out on repeated ignition faults. In Los Altos homes where the furnace runs infrequently through mild winters, the sensor can go a long time between cleanings and the carbon layer builds gradually. I clean the rod, confirm microamp draw is in the normal range for the board, and check for any gas pressure variance that might be accelerating the problem.
Condenser Capacitor Failure and Contactor Pitting. Salt air from the nearby Baylands works on aluminum and copper contacts over time, and run capacitors on Comfortmaker condensers in this area tend to degrade faster than the same unit would in a drier inland location. A weak capacitor causes the compressor to draw high amperage on start, shortening compressor life and sometimes tripping the breaker. I measure actual microfarads against the nameplate rating and inspect the contactor face for pitting. Both parts are inexpensive and replacing them together at the same service call is the right call when the contactor shows wear.

Models we service

Comfortmaker product lines.

Gas furnaces (SoftSound and base series)
Heat pumps and AC condensers
Communicating variable-speed systems
Air handlers and coils
Diagnostics, board and igniter repair, warranty work

Pricing and warranty

What it costs. What we stand behind.

$75

Diagnostic visit. Waived when you book the repair with us.
Written

90 days on consumables, 1 year on major parts, 2 years on sealed-system rebuilds. Quoted in writing before work starts.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

Comfortmaker service in neighboring cities.

More cities

Comfortmaker across our service area.

FAQ

Comfortmaker in Los Altos questions, answered.

Do you actually come out to Los Altos, or is that too far from San Ramon?

Los Altos is a regular stop for us. We run the Peninsula as part of our normal service area, so there is no extra travel surcharge and scheduling is the same as anywhere else we cover.
Is Comfortmaker a reasonable choice for the older ducted homes in Los Altos?

It fits well. Most of the 1950s and 1960s ranch homes here already have duct systems sized for a standard split system, and Comfortmaker on the ICP-Carrier platform gives you solid equipment at a price that leaves room to spend on a good installation. The SoftSound furnace line is worth considering if the air handler is in a hallway closet or attached garage where noise carries into living space, which is common in that era of floorplan. Higher-tier models add communicating variable-speed, which pairs well with a two-stage heat pump if you want to lean on the heat pump and use the furnace as backup. What matters most for long-term performance in a home like that is the quality of the duct sealing and the installation itself.
What does the $75 diagnostic include, and what warranty covers the work afterward?

The $75 covers a full fault diagnosis: I pull board fault codes, run the system through its sequence of operation, measure pressures or electrical values as the failure requires, and identify the specific failed component. You get a written quote for the repair before anything is authorized. If you approve the repair, the $75 applies toward it. Completed repairs carry a 1-year warranty on both the part and the labor.

Need Comfortmaker service in Los Altos?

Tell us what is broken. We will quote it.