Hillsborough, CA
HVAC Pros in Hillsborough, CA
Steady suburban HVAC market in Hillsborough: 6 providers compete, and heat-pump conversions have been the dominant job type the past two seasons. Pacific Gas & Electric (PG&E) rebates up to $3,100 available.
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Quick facts
- AreaHillsborough
- StateCA
- Providers6
- Climate zone3C-Warm-Marine
- Heating degree days2,600
- Recommended systemheat pump dominant
Why HVAC matters in Hillsborough
Hillsborough sits in IECC climate zone 3C-Warm-Marine with average January temperatures of 52°F and July highs around 68°F. The moderate climate makes heat pumps an efficient choice for year-round comfort.
CA (San Mateo County) falls in IECC 3C-Warm-Marine. HDD 2600 / CDD 500 per NOAA 1991–2020 state averages drive a heat pump dominant HVAC strategy. Climate data is zone-level; consult a contractor for site-specific load calcs.
Heat pump recommended for Hillsborough
An air source heat pump is the ideal system for this climate zone — it heats in winter and cools in summer with one unit.
With mild winters (avg 52°F in January) and 2,600 heating degree days, heat pumps operate at peak efficiency year-round here. California's Title 24 and the CARB Zero-Emission Space & Water Heater rulemaking are steering new-construction and replacements toward heat pumps; many jurisdictions have local reach codes that restrict new gas hookups.
About Hillsborough HVAC
6 HVAC providers list active service in Hillsborough — a small but workable shortlist. Getting three quotes is realistic if you plan a week out. Homeowners in Hillsborough typically schedule maintenance in spring and fall to get ahead of peak-season wait times.
Hillsborough's climate (IECC zone 3C-Warm-Marine) keeps outdoor temps inside the efficient range of air-source heat pumps most of the year, with January averages around 52°F. That's why heat-pump conversions have overtaken straight AC + furnace installs in most of the local market. Properly sized equipment matched to Hillsborough's load profile runs quieter, lasts longer, and avoids the short-cycling that kills cheap installs. Pacific Gas & Electric (PG&E)'s PG&E Heat Pump HVAC Rebate (TECH Clean California) currently offers up to $3,100 toward a qualifying system, which meaningfully shifts the cost-of-ownership math.
Top local providers
Request quotes →What customers say “Highly recommended Hays Heating & Air! They installed my furnace and AC unit 15 years ago and have maintained it ever…”
- Warren-Hay MechanicalTop rated
What customers say “Lex was fantastic. Absolute credit to the company — truly great guy. Every experience with Warren Hay has been really…”
- J W Knight Heating & ACTop rated
What customers say “My first system lasted 17 years that they installed. I did have some work done to it over the years but for something…”
- DunRite Heating & Air Inc.Verified
What customers say “Referred by a friend, I call them when my AC failed during the July 2024 mega heat wave. This could not have been a…”
- REDWIRE HVAC INCVerified
What Hillsborough homeowners say
“My first system lasted 17 years that they installed. I did have some work done to it over the years but for something that runs more than my car I didnt have to spend much. I called them and had them install my new unit this summer and have had no pr…”
“Lex was fantastic. Absolute credit to the company — truly great guy. Every experience with Warren Hay has been really positive. I highly recommend them. I need to also add that Warren Hay, last year, came out on 20 minutes notice the day before our…”
“Highly recommended Hays Heating & Air! They installed my furnace and AC unit 15 years ago and have maintained it ever since. John is outstanding!! When I call with a question or need to schedule routine maintenance or have anything done they schedule…”
Local pricing snapshot
Repairs typically run $150–$600. Full system replacements range from $4k for a basic furnace to $12k+ for a premium heat pump. Heat pumps are the recommended system for this climate zone, offering both heating and cooling in one unit.
Available rebates in Hillsborough
- Pacific Gas & Electric (PG&E): PG&E Heat Pump HVAC Rebate (TECH Clean California) — $1,000–$3,100 for heat pump
- Pacific Gas & Electric (PG&E): PG&E Ductless Mini-Split Heat Pump Rebate — $500–$1,500 for ductless
- Pacific Gas & Electric (PG&E): PG&E Smart Thermostat Rebate — $75–$120 for thermostat
Federal tax credits (up to $2,000 for heat pumps) can stack with utility rebates. See full cost breakdown →
Nearby service areas
California hub →Explore more California markets from the state hub.
Popular comparisons in Hillsborough
- Hay's Heating And Air Conditioning Inc vs Warren-Hay Mechanical4.8★ vs 4.8★
- Hay's Heating And Air Conditioning Inc vs J W Knight Heating & AC4.8★ vs 4.6★
- Warren-Hay Mechanical vs J W Knight Heating & AC4.8★ vs 4.6★
- Warren-Hay Mechanical vs DunRite Heating & Air Inc.4.8★ vs 3.9★
- J W Knight Heating & AC vs DunRite Heating & Air Inc.4.6★ vs 3.9★
- J W Knight Heating & AC vs REDWIRE HVAC INC
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Frequently Asked Questions
What's the best heating system for Hillsborough?
Hillsborough is in IECC climate zone 3C-Warm-Marine with mild winters (avg January: 52°F). Air source heat pumps are the recommended system — they provide both heating and cooling efficiently in this marine climate, and qualify for substantial utility and federal rebates.
What HVAC rebates are available in Hillsborough?
Hillsborough homeowners can stack multiple incentives: Pacific Gas & Electric (PG&E) offers up to $3,100 for heat pump installations. Add the federal 25C tax credit ($2,000), and total savings can reach $5,100+. Ask your installer to itemize which rebates apply to your specific project.
How much does HVAC work cost in Hillsborough?
In Hillsborough, typical costs range from $150-$600 for repairs, $4,000-$8,000 for a standard furnace or AC replacement, and $6,000-$14,000 for a heat pump system. After available rebates, heat pump installations often net out to $4,000-$9,000. Get 2-3 written quotes to compare — prices vary significantly between contractors.
How do I verify a HVAC contractor is licensed in California?
California HVAC contractors need an active C-20 (Warm-Air Heating, Ventilating and Air-Conditioning) license issued by the Contractors State License Board. Verify at cslb.ca.gov — search by license number or business name and confirm status is Active, the $25,000 contractor bond is on file, and workers' comp is current. A separate HERS rater may be required to sign off on duct and system installations under Title 24.
Licensing verified weekly. Reviews refreshed within the last 30 days.
Licensing data: Contractors State License Board (CSLB) · Company data: verified business records + Google Business profile
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