❄️ Official Rankings
10 Best HVAC in Janesville, WI (August 2026)
We compared 10 hvac serving Janesville and Rock County, Wisconsin, and ranked the top providers by verified reviews, ratings, and local reputation — 1,024 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by J. C. Heating and Cooling, Inc.. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 1,024
J. C. Heating and Cooling, Inc.
⭐ 5.0 · 449 reviews
300 S River St, Janesville, WI 53548
Rock Valley Services, Inc.
⭐ 4.9 · 456 reviews
928 Todd Dr #2, Janesville, WI 53546
Don-Martin Heating, Cooling & Geothermal Inc.
⭐ 5.0 · 26 reviews
Janesville, WI 53545
Air Control Heating & Cooling LLC
⭐ 5.0 · 12 reviews
510 Tudor Dr, Janesville, WI 53546
SERVPRO of Rock County
⭐ 4.5 · 56 reviews
1506 Center Ave, Janesville, WI 53546
Butters-Fetting Co. - Janesville Branch
⭐ 4.8 · 4 reviews
2627 E County Rd O, Janesville, WI 53546
R.E. Michel Company
⭐ 5.0 · 2 reviews
607 S Arch St, Janesville, WI 53548
Fabtek Custom Sheet Metal & HVAC
⭐ 5.0 · 2 reviews
4716 S John Paul Rd, Janesville, WI 53546
HVAC listed here serve Janesville, Rock County, and nearby ZIP codes including 53545, 53546, 53547, 53548.