❄️ Official Rankings
10 Best HVAC in Oshkosh, WI (October 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 October 2026.
- HVAC ranked
- 10
- Average rating
- 4.8★
- Reviews analyzed
- 484
⭐ 5.0 · 35 reviews
2860 Oregon St, Oshkosh, WI 54902
⭐ 4.8 · 145 reviews
920 S Main St, Oshkosh, WI 54902
⭐ 5.0 · 27 reviews
901 Otter Ave, Oshkosh, WI 54901
⭐ 4.7 · 81 reviews
2944 Jackson St, Oshkosh, WI 54901
⭐ 5.0 · 8 reviews
2913 Witzel Ave, Oshkosh, WI 54904
⭐ 5.0 · 4 reviews
1129 Michigan St, Oshkosh, WI 54902
⭐ 4.6 · 10 reviews
1087 Cozy Ln, Oshkosh, WI 54901
⭐ 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.