Service Areas · Sunol, CA
Heating & Air Conditioning in Sunol, CA
Upgrade Home Services repairs and installs heating, air conditioning and water heaters in Sunol, including AC repair and tune-ups, heat pumps and heat pump water heaters. Sunol is unincorporated, so building permits come from Alameda County rather than a city hall. We apply through the county's permit portal and handle the inspection for you.
- 5.0 on Google · 170 reviews
- Licensed, CSLB #1066776 · B, C-20
- Family-owned since 2002
- Mon–Sat 8 AM–5 PM, closed Sunday
What makes Sunol different for heating and cooling work?
Sunol is not a city. The Sunol Citizens’ Advisory Council site describes it as a rural, unincorporated community with fewer than 1,000 residents spread over 86 square miles, and Alameda County provides its local government services. That shapes a few things about your project:
- Permits go to the county. There is no Sunol building department.
- Electricity comes through Ava Community Energy, the county’s community power provider, with PG&E delivering it.
- Homes are spread out. Sunol sits inland in the hills between Fremont and Pleasanton, and summers away from the bay can run warmer, so a well-maintained AC or heat pump matters.
Which services do Sunol homeowners use most?
Pick the area that fits your home:
- Cooling: AC repair when the system runs but won’t cool, and an AC tune-up for $135 before summer.
- Heating: furnace service and heat pumps that cover heating and cooling with one outdoor unit.
- Water heaters: replacements and heat pump water heaters.
- Indoor air quality: duct cleaning and dryer vent cleaning.
For yearly upkeep, the Comfort Club Single System plan is $9.95/month or $115/year for one visit a year, and the Full plan is $18.95/month or $225/year for two visits.
What do Sunol homeowners ask us?
Where do I get a permit for a new AC or water heater in Sunol?
From Alameda County. The county’s building permit page serves its unincorporated areas and names Sunol among them. The Public Works Agency’s permits page sends applicants to the Alameda County Permit Portal to apply, submit plans, schedule inspections and check status. The agency’s office is at 399 Elmhurst Street in Hayward. We file the application as your contractor and set up HERS testing when the new system needs it (an independent test California’s energy code calls for on many installs).
Is Sunol covered by Ava Community Energy?
Yes. Ava’s Alameda County page lists Sunol by name among the unincorporated communities it serves. Ava’s jurisdiction table shows Bright Choice as the default plan for unincorporated Alameda County homes as of November 2026. Ava was formerly East Bay Community Energy.
Are there rebates for a heat pump in Sunol?
Check Ava’s Savings & Incentives page, which has a finder for rebates, tax credits and discounts. Because programs and eligibility shift, we leave amounts off this page. For a heat pump or heat pump water heater, you may qualify; call us and we’ll check what applies to your home.
Key takeaway: In Sunol, the permit, the inspection and the records all run through Alameda County, not a nearby city. A contractor who already works with the county’s permit portal keeps that paperwork off your list.
Have you worked near Sunol?
Our nearest posted projects are in Fremont, just over the hills: a furnace replacement and a mini-split service call. One tip for rural lots: keep about 2 feet clear around the outdoor unit, free of brush, leaves and stored items.
Who will come to my Sunol home?
A technician from Upgrade Home Services, a family-owned contractor based at 743 Ames Ave in Milpitas and in business since 2002. We are licensed by the CSLB, #1066776. Sunol is one of the 22 cities and communities on our service area list, which runs through southern Alameda, Santa Clara and San Mateo counties. We work on all major brands and install Amana, Carrier, Payne, Goodman, Daikin and Mitsubishi.
Sunol heating and AC questions
Does Sunol have its own building department?
No. Sunol is unincorporated, so Alameda County issues building permits and does the inspections. We apply through the county portal for you.
Who supplies electricity in Sunol?
Ava Community Energy lists Sunol among the unincorporated Alameda County communities it serves. PG&E delivers the power.
What does a repair visit cost in Sunol?
In Sunol, a diagnostic or service call is $89, waived with an approved repair. With a Comfort Club plan, the diagnostic drops to $49 for members. Estimates for new systems are free.
When are you open?
Our hours are 8 AM to 5 PM, Monday through Saturday. Sunday we’re closed. Call (408) 649-3198.
Specials
Simple, upfront prices.
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$135
AC or furnace tune-up
Cleaning, safety checks and a full system test before the season.
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$89
Diagnostic visit
Waived when you approve the repair. $49 for Comfort Club members.
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$399
Air duct cleaning
Up to 10 vents (returns count), $15 per extra vent. Comfort Club members 15% off.
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$130
Dryer vent cleaning
One-story vent up to 15 ft. $175 for two-story or townhouse. Comfort Club members 15% off.
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$135
Water heater maintenance
Tank flush. $150 for a tankless descale. Comfort Club members 15% off.
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Free
New system estimate
A clear written quote for a new or replacement system.
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We aren't comfortable
until you are.
Service, repair or replacement. Tell us what's going on and we'll take it from there. Free estimates on new and replacement systems.
Mon–Sat 8 AM–5 PM · Closed Sunday