❄️ Official Rankings
10 Best HVAC in Hartford, CT (August 2026)
We compared 10 hvac serving Hartford and Capitol Planning Region County, Connecticut, and ranked the top providers by verified reviews, ratings, and local reputation — 3,004 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Marzano Plumbing & Heating llc. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 3,004
- Area code
- 860
Hi-TECH Mechanical Services LLC
⭐ 5.0 · 90 reviews
143 Vanderbilt Ave, West Hartford, CT 06110
Ugo DiGrazia Air Conditioning and Heating, Inc.
⭐ 4.9 · 376 reviews
436 Franklin Ave, Hartford, CT 06114
Degree Heating and Cooling
⭐ 4.8 · 1565 reviews
160 Oak St #508, Glastonbury, CT 06033
Macca Plumbing & Heating
⭐ 4.7 · 48 reviews
284 Locust St, Hartford, CT 06114
Mull Bros Inc.
⭐ 4.7 · 27 reviews
61 Beaver Rd #2, Wethersfield, CT 06109
HVAC listed here serve Hartford, Capitol Planning Region County, and nearby ZIP codes including 06057, 06101, 06102, 06103, 06104, 06105, 06106, 06107, 06108, 06110, 06112, 06114 and more.