❄️ Official Rankings
10 Best HVAC in Lafayette, CA (October 2026)
We compared 10 hvac serving Lafayette and Contra Costa County, California, and ranked the top providers by verified reviews, ratings, and local reputation — 1,470 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by OSJ Electric. Updated for October 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 1,470
- Area code
- 925
#1
#2
⭐ 4.9 · 678 reviews
3515 Mount Diablo Blvd #42, Lafayette, CA 94549
#3
⭐ 4.8 · 424 reviews
3301 Vincent Rd, Pleasant Hill, CA 94523
#4
#5
⭐ 5.0 · 33 reviews
1511 2nd Ave, Walnut Creek, CA 94597
#6
⭐ 5.0 · 30 reviews
1280 Boulevard Way Ste 310, Walnut Creek, CA 94595
#7
#8
#9
⭐ 4.8 · 49 reviews
1031 Blackwood Ln, Lafayette, CA 94549
#10
HVAC listed here serve Lafayette, Contra Costa County, and nearby ZIP codes including 94549.