❄️ Official Rankings
10 Best HVAC in Keene, NH (August 2026)
We compared 10 hvac serving Keene and Cheshire County, New Hampshire, and ranked the top providers by verified reviews, ratings, and local reputation — 997 customer reviews in all.
The 10 listed below hold an average rating of 5.0 out of 5, led by Bergeron Mechanical Systems. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 5.0★
- Reviews analyzed
- 997
- Area code
- 603
Bergeron Mechanical Systems
⭐ 5.0 · 560 reviews
216 Marlboro St Suite 3, Keene, NH 03431
Triumph Home Services
⭐ 4.9 · 89 reviews
428 Main St Ste #8, Keene, NH 03431
Monadnock Plumbing, Heating and Air Conditioning LLC
⭐ 5.0 · 38 reviews
72 Water St, Marlborough, NH 03455
Ciardelli Fuel Company, Inc.
⭐ 4.8 · 65 reviews
639 Marlboro St, Keene, NH 03431
James Lawrence Electric Inc.
⭐ 5.0 · 20 reviews
160 Emerald St, Keene, NH 03431
New England Trade School
⭐ 4.9 · 27 reviews
25 Roxbury St #116, Keene, NH 03431
HVAC in Keene — FAQs
How do I choose the best HVAC company in Keene, NH?+
Compare local companies on verified reviews, confirm they service your equipment — furnace, heat pump, or central air — and check they're licensed in New Hampshire. Top-rated options serving Keene include Zajac HVAC LLC and Bergeron Mechanical Systems. Ask about emergency availability for a Cheshire County winter.
Do heat pumps work in New Hampshire?+
Yes — modern cold-climate heat pumps work well through New Hampshire winters and can lower heating and cooling costs, though many homes keep a backup heat source for the coldest stretches. A local HVAC company can assess your home and size the system correctly.
How much does HVAC service or installation cost in Keene?+
Costs depend on whether you need a repair, a tune-up, or a full system replacement, plus your home's size, so Keene contractors quote after an assessment. For installations especially, get two or three quotes from top-rated local companies to compare.
Which HVAC companies are top-rated in Keene, NH?+
By verified reviews, highly rated HVAC providers serving Keene include Zajac HVAC LLC and Bergeron Mechanical Systems, among other local providers ranked here. Keene is in Cheshire County (area code 603).
HVAC listed here serve Keene, Cheshire County, and nearby ZIP codes including 03431, 03435.