❄️ Official Rankings
10 Best HVAC in Durham, NH (September 2026)
We compared 10 hvac serving Durham and Strafford County, New Hampshire, and ranked the top providers by verified reviews, ratings, and local reputation — 2,334 customer reviews in all.
The 10 listed below hold an average rating of 4.8 out of 5, led by East Coast HVAC & EC Electric. Updated for September 2026.
- HVAC ranked
- 10
- Average rating
- 4.8★
- Reviews analyzed
- 2,334
- Area code
- 603
⭐ 4.9 · 1618 reviews
25 Central Ave, Dover, NH 03820
⭐ 4.9 · 151 reviews
418 Dover Point Rd Unit 3, Dover, NH 03820
⭐ 4.8 · 194 reviews
1A N Main St, Newmarket, NH 03857
⭐ 4.8 · 179 reviews
74 Industrial Pk Rd, Dover, NH 03820
⭐ 4.7 · 90 reviews
32 Crosby Rd, Dover, NH 03820
⭐ 5.0 · 8 reviews
18 Banner Dr unit 4, Dover, NH 03820
⭐ 4.4 · 54 reviews
218 W Knox Marsh Rd, Dover, NH 03820
HVAC listed here serve Durham, Strafford County, and nearby ZIP codes including 03824, 03855.