❄️ Official Rankings
10 Best HVAC in Norwalk, CT (August 2026)
We compared 10 hvac serving Norwalk and Western Connecticut Planning Region County, Connecticut, and ranked the top providers by verified reviews, ratings, and local reputation — 4,408 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Gault Energy & Home Solutions Gault Stone & Landscape Supplies. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 4,408
- Area code
- 203
Gault Energy & Home Solutions Gault Stone & Landscape Supplies
⭐ 4.9 · 1464 reviews
11 Ferry Ln W, Westport, CT 06880
Lowe's Air Duct Cleaning
⭐ 4.9 · 101 reviews
15 Cross St #209, Norwalk, CT 06851
Hellas Air Temp Inc
⭐ 4.8 · 591 reviews
52 Connecticut Ave, Norwalk, CT 06850
Astacio Heating, Cooling, Plumbing & Electrical
⭐ 4.7 · 2100 reviews
70 Fort Point St, Norwalk, CT 06855
JLP Heating & Cooling
⭐ 5.0 · 24 reviews
304 Main Ave #229, Norwalk, CT 06851
The Heating & Cooling Company
⭐ 5.0 · 23 reviews
54 Wilton Ave unit 2, Norwalk, CT 06851
Lighthouse Heating & Cooling
⭐ 5.0 · 23 reviews
25 Van Zant St Ste 1a-1, Norwalk, CT 06855
Dominick's Heating and Cooling
⭐ 4.8 · 40 reviews
10 Iris Ct, Norwalk, CT 06854
Varsity Zone HVAC of Norwalk
⭐ 5.0 · 13 reviews
16 Commerce St #3, Norwalk, CT 06850
HVAC listed here serve Norwalk, Western Connecticut Planning Region County, and nearby ZIP codes including 06850, 06851, 06852, 06853, 06854, 06855, 06856, 06857, 06858, 06859, 06860.