Is Portola Valley within your normal service area, or is that a special trip from San Ramon?

It is within our normal service area. Count on around an hour, 680 south and then across on 92 or 280. Portola Valley rides on the same Peninsula route day as Hillsborough, and once we confirm the appointment you get a written arrival time.

Does GrandAire make sense here given the power shutoffs, or should I plan around something else?

For a detached ADU, office, or an older ranch house, GrandAire is a reasonable, low-cost choice, and the Carrier-family parts network keeps repairs affordable over time. It is not built for variable-speed or communicating controls, so if you are planning your backup power strategy around efficiency during an outage, we should talk through the options for that specific building before you commit.

What exactly does the $99 diagnostic include, and what is the warranty on repairs?

The diagnostic fee gets you a full workup, fault codes pulled, the unit run through its complete sequence of operation, and the suspect components tested under actual load, not just eyeballed. You get a specific written number before we touch anything. Approve the repair and $99 comes off the invoice. Pass on it and the $99 is all you owe. One year covers parts and labor on any repair we do, and a full system install carries ten years on both.

GRANDAIRE · PORTOLA VALLEY

Service · All GrandAire Models

GrandAire Heat Pump, AC & Furnace Repair · Portola Valley, CA

GrandAire heat pump, AC, and furnace repair in Portola Valley, where power shutoffs and outer-road well systems make basic Carrier-family equipment earn its keep.

$99 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

GrandAire in Portola Valley

GrandAire heating and cooling in Portola Valley.

Portola Valley sits in oak-and-redwood hills off Alpine Road and Portola Road, a mix of large custom homes on wooded acreage, mid-century modern houses in the Ladera-adjacent pockets, and ranch properties spread toward Skyline. GrandAire equipment turns up here mostly on ADUs, detached offices, and older ranch houses where the budget stayed practical, straightforward single-stage gear on the Carrier platform. Parts stay available and repairs stay reasonable, but it is basic hardware and it tells you fast when something is wrong.

This is a wildfire-aware town, and PG&E public safety power shutoffs happen often enough that a hard restart after an outage is a common trigger for a GrandAire service call, more so than steady wear. We pull board fault codes first and check the sequence of operation before touching parts, and after a shutoff we specifically check contactors for a stuck or pitted contact from the restart surge. On furnaces, we run a full combustion check and test the flame sensor and igniter under actual load rather than a cold resistance reading, since a marginal sensor will still short-cycle once the heat exchanger comes up to temperature.

HVAC work runs through our Bay Area HVAC Service division out of San Ramon. Diagnostic is $99, and it comes off the bill once you approve the repair. You get the exact cost in writing before any work starts. Our techs carry EPA Section 608 Universal certification, and we hold CSLB license 1136642. Repairs carry a one-year warranty on parts and labor, and new equipment we install is backed by ten years parts and ten years labor. Whatever rebate might apply, we confirm the current terms at estimate time rather than quote something that may no longer be accurate.

Common repairs we do

What we close on the truck.

Igniter Failure on GrandAire Gas Furnaces. The silicon nitride igniter in a GrandAire furnace wears out predictably, and out here a hard restart after a PG&E shutoff is at least as common a trigger as ordinary age. You get a no-heat call, the inducer spins up, gas valve opens, and still no flame, with the board locking out after a couple of attempts. We measure the igniter's actual draw current instead of guessing from appearance, install the direct Carrier-family replacement, and confirm a clean lightoff before we call it done.
Flame Sensor Short-Cycling the Burner. A dirty flame sensor accounts for more GrandAire furnace calls than anything else we see here. The burner lights, runs briefly, then shuts off, and the homeowner keeps resetting the thermostat and getting nowhere. We notice this happens faster on units sitting near a septic vent or a damp crawlspace out on the outer roads toward Skyline. Rather than wipe the rod and call it fixed, we clean it and confirm the actual microamp reading during operation, since a sensor too degraded will just fail again soon.
Capacitor and Contactor Failure on GrandAire AC Condensers. GrandAire condenser capacitors weaken over repeated heat cycles, and the contactors see real wear across a summer season. A public safety shutoff followed by a rough restart adds an extra jolt of stress to a contactor that may already be marginal. The signs are a unit that hums but will not spin up the fan or compressor, or one that starts and then trips on thermal overload. We check capacitance and contactor pull-in under load rather than relying on a visual inspection, and we carry the common Carrier-family sizes on the truck for same or next-day repair.

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.

$99

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

3 months standard, 1 year on inverter boards, up to 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.

More cities

GrandAire across our service area.

FAQ

GrandAire in Portola Valley questions, answered.

Is Portola Valley within your normal service area, or is that a special trip from San Ramon?

It is within our normal service area. Count on around an hour, 680 south and then across on 92 or 280. Portola Valley rides on the same Peninsula route day as Hillsborough, and once we confirm the appointment you get a written arrival time.
Does GrandAire make sense here given the power shutoffs, or should I plan around something else?

For a detached ADU, office, or an older ranch house, GrandAire is a reasonable, low-cost choice, and the Carrier-family parts network keeps repairs affordable over time. It is not built for variable-speed or communicating controls, so if you are planning your backup power strategy around efficiency during an outage, we should talk through the options for that specific building before you commit.
What exactly does the $99 diagnostic include, and what is the warranty on repairs?

The diagnostic fee gets you a full workup, fault codes pulled, the unit run through its complete sequence of operation, and the suspect components tested under actual load, not just eyeballed. You get a specific written number before we touch anything. Approve the repair and $99 comes off the invoice. Pass on it and the $99 is all you owe. One year covers parts and labor on any repair we do, and a full system install carries ten years on both.

Need GrandAire service in Portola Valley?

Tell us what is broken. We will quote it.