449 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cupertino: Service Champions, CR Score 94/100; 4.9★ from 3,407 Google reviews; open 24/7.
Best for emergencies (open 24/7): Fuse HVAC, Refrigeration, Electrical & Plumbing, posts 24/7 hours; ranked #2 of 449.
Most-reviewed: IRBIS Air Plumbing Electrical, 1,466 Google reviews at 4.9★, the most of 449 ranked after Service Champions; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
449 Cupertino HVAC contractors are ranked here by CR Score, from 8 published factors. 131 are open 24/7, 305 open Saturdays and 247 open Sundays, based on posted hours. The median Google rating is 4.9★ across 449 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Service Champions | 94 | 4.9★ (3,407) | San Jose, 9 mi away | 24/7 | Overall |
| 2 | Fuse HVAC, Refrigeration, Electrical & Plumbing | 93 | 4.9★ (1,034) | Santa Clara, 5 mi away | 24/7 | Emergencies |
| 3 | TRIO Heating, Air & Plumbing | 93 | 4.9★ (1,142) | San Jose, 8 mi away | 24/7 | — |
| 4 | IRBIS Air Plumbing Electrical | 93 | 4.9★ (1,466) | San Jose, 9 mi away | 24/7 | Most reviews |
| 5 | Heating And Air Experts - Affordable HVAC Contractor in Fremont, California | 91 | 5.0★ (761) | Fremont, 14 mi away | 24/7 | — |
| 6 | Fuse | 91 | 4.9★ (400) | San Jose, 6 mi away | 24/7 | — |
| 7 | Fuse service | 91 | 5.0★ (444) | Palo Alto, 11 mi away | 24/7 | — |
| 8 | United HVAC, Plumbing & Electrical | 91 | 4.9★ (839) | Cupertino | Sat · Sun · Evenings | — |
| 9 | Air Care Heating & Cooling Inc. | 91 | 4.9★ (426) | San Jose, 9 mi away | 24/7 | — |
| 10 | Fuse Service | 91 | 4.9★ (273) | Santa Clara, 6 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and review volume: 4.9★ from 3,407 Google reviews, the most Google reviews on this list (3,407).
Based in Santa Clara, 5 mi away
Ranked #2 because of its Google rating and availability: 4.9★ from 1,034 Google reviews, open 24/7.
Based in San Jose, 8 mi away
Ranked #3 because of its Google rating and availability: 4.9★ from 1,142 Google reviews, open 24/7.
Based in San Jose, 9 mi away
Ranked #4 because of its Google rating and availability: 4.9★ from 1,466 Google reviews, open 24/7.
Based in Fremont, 14 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 761 Google reviews, open 24/7.
Based in San Jose, 6 mi away
Ranked #6 because of its Google rating and availability: 4.9★ from 400 Google reviews, open 24/7.
Based in Palo Alto, 11 mi away
Ranked #7 because of its Google rating and availability: 5.0★ from 444 Google reviews, open 24/7.
Based in Cupertino
Ranked #8 because of its Google rating and trade focus: 4.9★ from 839 Google reviews, listed on Google as “HVAC contractor”.
Based in San Jose, 9 mi away
Ranked #9 because of its Google rating and availability: 4.9★ from 426 Google reviews, open 24/7.
Based in Santa Clara, 6 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 273 Google reviews, open 24/7.
Based in Sunnyvale, 4 mi away
Ranked #11 because of its Google rating and availability: 4.7★ from 550 Google reviews, open 24/7.
Based in Campbell, 11 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 560 Google reviews, open 24/7.
Based in Fremont, 13 mi away
Ranked #13 because of its Google rating and availability: 4.9★ from 723 Google reviews, open 24/7.
Based in Campbell, 6 mi away
Ranked #14 because of its Google rating and availability: 5.0★ from 166 Google reviews, open 24/7.
Based in San Jose, 9 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 236 Google reviews, open 24/7.
Based in Mountain View, 6 mi away
Ranked #16 because of its Google rating and availability: 4.9★ from 216 Google reviews, open 24/7.
Based in Campbell, 5 mi away
Ranked #17 because of its Google rating and availability: 5.0★ from 124 Google reviews, open 24/7.
Based in San Jose, 8 mi away
Ranked #18 because of its Google rating and availability: 4.6★ from 1,308 Google reviews, open 24/7.
Based in Fremont, 6 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 115 Google reviews, open 24/7.
Based in San Jose, 8 mi away
Ranked #20 because of its Google rating and availability: 4.7★ from 546 Google reviews, open 24/7.
Based in San Mateo, 9 mi away
Ranked #21 because of its Google rating and availability: 4.9★ from 217 Google reviews, open 24/7.
Based in San Jose, 9 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 142 Google reviews, open 24/7.
Based in San Jose, 5 mi away
Ranked #23 because of its Google rating and availability: 4.9★ from 108 Google reviews, open 24/7.
Based in San Jose, 9 mi away
Ranked #24 because of its Google rating and availability: 4.7★ from 439 Google reviews, open 24/7.
Based in Cupertino
Ranked #25 because of its Google rating and availability: 5.0★ from 34 Google reviews, open 24/7.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 449 ranked HVAC contractors here; the rest are on their profiles.
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Advanced Technical Hvac | 5.0★ (54) | 10 mi |
| Air Conditioning Service Help | 5.0★ (2) | 6 mi |
| All Appliance & HVAC SERVICE, INC | 1.0★ (1) | In Cupertino |
| ALL PRO CLEANING SPECIALIST, INC. | 5.0★ (2) | 3 mi |
| Allied Aire Service, Inc. | 5.0★ (2) | 9 mi |
| Around the Clock Service, Inc. | 4.5★ (34) | 4 mi |
| Attic Total Cleaning & Proofing | 5.0★ (1) | In Cupertino |
| AW Puma Home Services Inc CLINIC | In Cupertino | |
| Bay Area Mechanical LLC | 5.0★ (2) | 6 mi |
| CELLAR HVAC | 5.0★ (2) | 7 mi |
| Ever HVAC Contractor Cupertino | In Cupertino | |
| Golden Gate Mechanical, Inc. | 3.5★ (2) | 5 mi |
| HVAC/R | 5.0★ (1) | In Cupertino |
| Jupiter Electric | In Cupertino | |
| Melgar Mechanical | 3.0★ (2) | 6 mi |
| North Cal Heating And Air | 5.0★ (2) | In Cupertino |
| San Jose AC & Heating | 5.0★ (2) | 8 mi |
| San Jose Heating & Air Conditioning | 5.0★ (2) | 9 mi |
| Santa Clara Cleaning Service CO | 5.0★ (2) | 4 mi |
| Sears Heating and Air Conditioning | 1.0★ (1) | In Cupertino |
National price ranges in USD, not adjusted for Cupertino. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In California, Contractors State License Board (CSLB) licenses C-20 Warm-Air Heating, Ventilating and Air-Conditioning contractor license.
Jobs of $1,000 or more in labor and materials (from January 1, 2025).
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
California's HVAC demand peaks during summer heat waves and the first cold snaps. Spring and fall are the easiest times to book maintenance.
We scored 449 Cupertino HVAC contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Cupertino data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |