Best HVAC companies in Sunnyvale, CA

The highest-scoring HVAC company in and near Sunnyvale is Fuse HVAC, Refrigeration, Electrical & Plumbing (score 83, 4.9 stars from 1,423 Google reviews). 59 companies meet the 5 Star standard within about 16 miles; the top 30 are ranked below.

Last updated Nov 1, 2026How we rank
  1. 1

    Fuse HVAC, Refrigeration, Electrical & Plumbing

    4.9 · 1,423 Google reviewsSanta Clara, CA9 years in business

    Fuse HVAC, Refrigeration, Electrical & Plumbing provides residential and commercial HVAC, electrical, and plumbing work in San Jose and surrounding Bay Area communities. The company says it has served the area since 2…

    Financing available
    83SCORE
  2. 2

    IRBIS Air Plumbing Electrical

    4.9 · 1,603 Google reviewsSan Jose, CA

    IRBIS Air Plumbing Electrical serves homes in San Jose and across Alameda, Santa Clara, and San Mateo counties with heating, cooling, plumbing, and electrical work. Its HVAC services cover furnace and heat pump repair…

    Financing availableEmergency service
    81SCORE
  3. 3

    TRIO Heating, Air & Plumbing

    4.9 · 1,331 Google reviewsSan Jose, CA
    80SCORE
  4. 4

    CostLess heating & cooling

    5.0 · 362 Google reviewsMilpitas, CA
    80SCORE
  5. 5

    Service Champions

    4.8 · 3,680 Google reviewsSan Jose, CA
    79SCORE
  6. 6

    United HVAC, Plumbing & Electrical

    4.9 · 940 Google reviewsCupertino, CA
    79SCORE
  7. 7

    AIS Heating & Air Conditioning

    4.9 · 865 Google reviewsFremont, CA
    79SCORE
  8. 8

    Freon HVAC, Electrical & Appliance

    5.0 · 288 Google reviewsCampbell, CA
    79SCORE
  9. 9

    AAA Furnace & A/C

    4.9 · 756 Google reviewsSan Jose, CA
    78SCORE
  10. 10

    Akins Auto Repair

    4.9 · 740 Google reviewsSan Jose, CA
    78SCORE
  11. 11

    Valley Heating, Cooling, Electrical and Solar

    4.9 · 429 Google reviewsSan Jose, CA
    77SCORE
  12. 12

    Air Care Heating & Cooling Inc.

    4.9 · 489 Google reviewsSan Jose, CA
    76SCORE
  13. 13

    Sandium Heating and Air Conditioning

    4.9 · 350 Google reviewsSan Jose, CA
    76SCORE
  14. 14

    Air Sharks

    4.9 · 291 Google reviewsSan Jose, CA
    InsuredEmergency serviceFinancing availableBackground-checked
    75SCORE
  15. 15

    Global Heating and Cooling services

    4.9 · 288 Google reviewsMilpitas, CA
    75SCORE
  16. 16

    The Tankless Guys Plumbing & Rooter

    5.0 · 181 Google reviewsSanta Clara, CA
    75SCORE
  17. 17

    Upgrade Home Services, HVAC

    5.0 · 170 Google reviewsMilpitas, CA
    75SCORE
  18. 18

    Ozone Service

    5.0 · 144 Google reviewsSan Jose, CA
    75SCORE
  19. 19

    Precision Heating & Cooling

    5.0 · 251 Google reviewsSan Jose, CA
    73SCORE
  20. 20

    Iris Mechanical Inc

    5.0 · 96 Google reviewsSanta Clara, CA
    72SCORE
  21. 21

    R&R Refrigeration & Air Conditioning, Inc.

    4.9 · 165 Google reviewsSan Jose, CA
    71SCORE
  22. 22

    Golden Comfort AC & Heating Repair

    5.0 · 109 Google reviewsSan Jose, CA
    71SCORE
  23. 23

    Air & Plumbing Systems, Inc.

    5.0 · 78 Google reviewsCampbell, CA
    71SCORE
  24. 24

    Therma Tech Inc

    4.9 · 234 Google reviewsSan Jose, CA
    70SCORE
  25. 25

    Aire Serv of Campbell and Saratoga

    4.9 · 151 Google reviews
    70SCORE
  26. 26

    A & H

    4.9 · 140 Google reviewsSan Jose, CA
    70SCORE
  27. 27

    EVS MECHANICAL INC

    5.0 · 62 Google reviewsSanta Clara, CA
    70SCORE
  28. 28

    Calvey Heating and Air

    4.8 · 198 Google reviewsSan Jose, CA
    69SCORE
  29. 29

    Made Simple Heating And Air

    5.0 · 123 Google reviewsSanta Clara, CA
    69SCORE
  30. 30

    Aces Team Air Duct Care

    4.9 · 120 Google reviewsSan Jose, CA
    69SCORE

We list only companies that clear our published bar, so this area is still filling in. As more HVAC companies near Sunnyvale qualify, they'll appear here automatically.

Compare the top 10

Top HVAC companies in Sunnyvale by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1Fuse HVAC, Refrigeration, Electrical & Plumbing834.91,4239Santa Clara
2IRBIS Air Plumbing Electrical814.91,603–San Jose
3TRIO Heating, Air & Plumbing804.91,331–San Jose
4CostLess heating & cooling805.0362–Milpitas
5Service Champions794.83,680–San Jose
6United HVAC, Plumbing & Electrical794.9940–Cupertino
7AIS Heating & Air Conditioning794.9865–Fremont
8Freon HVAC, Electrical & Appliance795.0288–Campbell
9AAA Furnace & A/C784.9756–San Jose
10Akins Auto Repair784.9740–San Jose

HVAC companies in Sunnyvale: quick answers

Who is the highest-rated HVAC company in Sunnyvale, CA?

Fuse HVAC, Refrigeration, Electrical & Plumbing has the highest 5 Star Score among HVAC companies in and near Sunnyvale: 83 out of 100, with a 4.9 star Google rating from 1,423 reviews.

How many 5 Star HVAC companies serve Sunnyvale?

59 HVAC companies meet our standard within about 16 miles of Sunnyvale: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 30 have 16,057 Google reviews between them, averaging 4.93 stars.

How are these HVAC companies ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.