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

Los Altos Hills is a regular service area for us. The drive from San Ramon through the Diablo Range corridor is straightforward. We schedule it the same as any other mid-Peninsula city and do not add a trip surcharge.

GrandAire is not a premium brand. Does it make sense on a Los Altos Hills property?

Depends on the situation. If you are replacing a furnace in a detached ADU, a guesthouse, or a rental unit on one of the larger hillside parcels, spending the money on a variable-speed Carrier or Trane is hard to justify when a plain single-stage unit on the same platform will do the same job. GrandAire's value is exactly that: the Carrier parts network without the Carrier price. For a primary whole-home system in a high-end custom home, I would probably steer you toward something else. We will tell you which way the math cuts before you commit.

What does the $75 diagnostic actually include, and what warranty do I get on the repair?

The $75 covers a full system evaluation: I read the board fault history, measure operating pressures or gas valve output depending on the system type, test electrical components, and give you a written quote for whatever I find. If you approve the repair that day, the $75 comes off the total. Any repair we do carries a 1-year parts and labor warranty. If it is a new installation rather than a repair, the warranty extends to 10 years on both parts and labor.

GRANDAIRE · LOS ALTOS HILLS

Service · All GrandAire Models

GrandAire Heat Pump, AC & Furnace Repair · Los Altos Hills, CA

GrandAire heat pump, AC, and furnace repair in Los Altos Hills, where hillside estates and older ranch-style lots keep your service tech busy on both ducted and ductless systems.

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

Call (925) 999-4095

GrandAire in Los Altos Hills

GrandAire heating and cooling in Los Altos Hills.

Los Altos Hills sits at the edge of the mid-Peninsula foothills, and the housing mix here is unusual. You have large hillside parcels with custom homes built in the 1960s and 70s, and a fair number of those were fitted out with whatever the builder or subsequent owner could get cheap. GrandAire shows up in that context often: a builder-grade gas furnace in a slab-floor ranch, or a condensing unit swapped in during a budget renovation. The hills also catch afternoon wind off the Bay, so summer cooling loads are more moderate than the inland Tri-Valley, but you still get enough July and August heat to run AC hard on the still days.

When I pull up to a GrandAire unit, I start with the control board fault history and static pressures before I touch anything. This brand is on the Carrier platform, so the board speaks clearly and parts availability is good, but the diagnostics still matter. On the Peninsula hillsides, outdoor condensers pick up marine-influenced air more than people expect. I check contactor contacts and capacitor readings early because mild salt-and-fog exposure accelerates surface corrosion on those components faster than you see in a dry inland zip code.

Bay Area HVAC Service runs out of San Ramon. The diagnostic fee is $75, and we waive it if the repair goes forward on the same visit. You get a written quote before I touch anything. All our technicians carry EPA Section 608 Universal certification. We hold CSLB license 1136642. Repairs are backed by a 1-year warranty. New equipment installations come with 10 years on parts and 10 years on labor.

Common repairs we do

What we close on the truck.

Igniter failure on GrandAire gas furnaces. The silicon nitride igniter in GrandAire single-stage furnaces is a common wear item. It usually fails with no heat call response and a lockout code on the board, sometimes after the unit runs fine all morning and then stops lighting in the afternoon. I confirm resistance is out of spec, swap the igniter, and verify flame sensor signal before I close up. Parts are stocked on the truck because they are shared across the Carrier-family lineup.
Flame sensor fouling causing short-cycle lockout. A dirty flame sensor will allow the burner to light for a second or two and then shut it back down on a "no flame" fault, repeating until the board locks out after three tries. In Los Altos Hills homes that run the furnace infrequently through mild winters, the sensor rod oxidizes between seasons rather than staying conditioned from regular use. I clean the rod, verify microamp draw in the 2.5 to 4.5 uA range while burning, and check the heat exchanger for any contributing airflow restriction.
Capacitor and contactor degradation on outdoor condensers. GrandAire AC condensers here get moderate but steady marine-air exposure from the Bay corridor, and run-capacitors and contactor contact faces show accelerated wear as a result. Symptoms are a compressor that hums but won't start, or a unit that trips the breaker on startup. I test capacitance against rated values, check contactor coil voltage and contact face condition, and replace what is out of tolerance. Both parts are Carrier-family spec and same or next-day replaceable.

Models we service

GrandAire product lines.

Gas furnaces (value single-stage)
Heat pumps and AC condensers
Air handlers and coils
Builder and supply-house equipment
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

GrandAire service in neighboring cities.

FAQ

GrandAire in Los Altos Hills questions, answered.

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

Los Altos Hills is a regular service area for us. The drive from San Ramon through the Diablo Range corridor is straightforward. We schedule it the same as any other mid-Peninsula city and do not add a trip surcharge.
GrandAire is not a premium brand. Does it make sense on a Los Altos Hills property?

Depends on the situation. If you are replacing a furnace in a detached ADU, a guesthouse, or a rental unit on one of the larger hillside parcels, spending the money on a variable-speed Carrier or Trane is hard to justify when a plain single-stage unit on the same platform will do the same job. GrandAire's value is exactly that: the Carrier parts network without the Carrier price. For a primary whole-home system in a high-end custom home, I would probably steer you toward something else. We will tell you which way the math cuts before you commit.
What does the $75 diagnostic actually include, and what warranty do I get on the repair?

The $75 covers a full system evaluation: I read the board fault history, measure operating pressures or gas valve output depending on the system type, test electrical components, and give you a written quote for whatever I find. If you approve the repair that day, the $75 comes off the total. Any repair we do carries a 1-year parts and labor warranty. If it is a new installation rather than a repair, the warranty extends to 10 years on both parts and labor.

Need GrandAire service in Los Altos Hills?

Tell us what is broken. We will quote it.