❄️ Official Rankings
10 Best HVAC in Cupertino, CA (September 2026)
We compared 10 hvac serving Cupertino and Santa Clara County, California, and ranked the top providers by verified reviews, ratings, and local reputation — 1,828 customer reviews in all.
The 10 listed below hold an average rating of 5.0 out of 5, led by United HVAC, Plumbing & Electrical. Updated for September 2026.
- HVAC ranked
- 10
- Average rating
- 5.0★
- Reviews analyzed
- 1,828
- Area codes
- 408, 650
United HVAC, Plumbing & Electrical
⭐ 4.9 · 918 reviews
10531 Pineville Ave, Cupertino, CA 95014
Promax Service Group
⭐ 5.0 · 87 reviews
3033 Kaiser Dr, Santa Clara, CA 95051
Green Tree Household Services
⭐ 5.0 · 73 reviews
10440 Bubb Rd, Cupertino, CA 95014
South Bay Heating and Cooling
⭐ 4.9 · 70 reviews
10337 Miller Ave #3, Cupertino, CA 95014
Alliance Residential Services Inc.
⭐ 5.0 · 28 reviews
10223 Randy Ln, Cupertino, CA 95014
Same Day Air Conditioning & Heating
⭐ 4.7 · 552 reviews
1212 W McKinley Ave #4, Sunnyvale, CA 94086
Thermal Precision
⭐ 5.0 · 23 reviews
7966 McClellan Pl, Cupertino, CA 95014
Precision Air Conditioning & Heating
⭐ 5.0 · 18 reviews
1055 Manet Dr, Sunnyvale, CA 94087
Ampereca HVAC & Appliance Repair Services
⭐ 5.0 · 15 reviews
10130 Parkwood Dr Apt 7, Cupertino, CA 95014
HVAC listed here serve Cupertino, Santa Clara County, and nearby ZIP codes including 95014, 95015.