❄️ Official Rankings
10 Best HVAC in Oshkosh, WI (August 2026)
We compared 10 hvac serving Oshkosh and Winnebago County, Wisconsin, and ranked the top providers by verified reviews, ratings, and local reputation — 484 customer reviews in all.
The 10 listed below hold an average rating of 4.8 out of 5, led by J. Cox Plumbing. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.8★
- Reviews analyzed
- 484
Kurt Zentner & Sons, Inc.
⭐ 5.0 · 35 reviews
2860 Oregon St, Oshkosh, WI 54902
OSHKOSH HEATING & AIR, LLC
⭐ 4.8 · 145 reviews
920 S Main St, Oshkosh, WI 54902
Thompson Heating and Cooling Services
⭐ 5.0 · 27 reviews
901 Otter Ave, Oshkosh, WI 54901
A&BE Heating and Cooling, LLC
⭐ 4.7 · 81 reviews
2944 Jackson St, Oshkosh, WI 54901
Andresen Sheet Metal Heating & Cooling
⭐ 5.0 · 8 reviews
2913 Witzel Ave, Oshkosh, WI 54904
American Heating & Air Conditioning
⭐ 5.0 · 4 reviews
1129 Michigan St, Oshkosh, WI 54902
Merten Plumbing & Heating Inc.
⭐ 4.6 · 10 reviews
1087 Cozy Ln, Oshkosh, WI 54901
Gartman Mechanical Services
⭐ 4.4 · 60 reviews
520 W South Park Ave, Oshkosh, WI 54902
HVAC listed here serve Oshkosh, Winnebago County, and nearby ZIP codes including 54901, 54902, 54903, 54904, 54906.