❄️ Official Rankings
10 Best HVAC in Lebanon, NH (August 2026)
We compared 10 hvac serving Lebanon and Grafton County, New Hampshire, and ranked the top providers by verified reviews, ratings, and local reputation — 1,991 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Jerm's Plumbing, Heating & Air. Updated for August 2026.
- HVAC ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 1,991
- Area codes
- 603, 802
Jerm's Plumbing, Heating & Air
⭐ 5.0 · 1447 reviews
16 Airpark Rd, West Lebanon, NH 03784
Forward's Plumbing, LLC
⭐ 5.0 · 95 reviews
31 Riverside Dr, Lebanon, NH 03766
Triumph Home Services
⭐ 4.9 · 148 reviews
3 S Main St Unit 2, West Lebanon, NH 03784
EcoClean Earth UpperValley: House Cleaning and Office Cleaning Services
⭐ 4.7 · 125 reviews
45 Hanover St, Lebanon, NH 03766
SERVPRO of Lebanon/Hanover/Littleton
⭐ 4.6 · 139 reviews
1088 Route 4A, Enfield, NH 03748
Cota & Cota
⭐ 4.5 · 27 reviews
8 Barnes Ave, White River Junction, VT 05001
Alliance Mechanical
⭐ 5.0 · 2 reviews
11 Interchange Dr, West Lebanon, NH 03784
HVAC in Lebanon — FAQs
How do I choose the best HVAC company in Lebanon, 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 Lebanon include Forward's Plumbing, LLC and Jerm's Plumbing, Heating & Air. Ask about emergency availability for an Upper Valley winter.
How much does HVAC service or installation cost in Lebanon?+
Costs depend on whether you need a repair, a tune-up, or a full system replacement, plus your home's size, so Lebanon contractors quote after an assessment. For installations especially, get two or three quotes from top-rated local companies to compare.
How often should I service my heating and cooling system in New Hampshire?+
Most HVAC professionals recommend an annual heating tune-up before winter and an air-conditioning check before summer. Regular maintenance keeps the system efficient and helps catch small problems before they become expensive failures in a cold snap.
Which HVAC companies are top-rated in Lebanon, NH?+
By verified reviews, highly rated HVAC and mechanical providers serving Lebanon include Forward's Plumbing, LLC, Jerm's Plumbing, Heating & Air, and J & B Plumbing & Heating. Lebanon is in Grafton County (area code 603).
HVAC listed here serve Lebanon, Grafton County, and nearby ZIP codes including 03756, 03766, 03784.