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Emergency HVAC Contractors in Hampstead, NH (2026)

Top 50 of 634 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Hampstead: Heritage Home Service, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency HVAC contractors in Hampstead at a glance

Top emergency HVAC contractors in Hampstead at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Heritage Home Service934.8★ (7,956)Auburn, 11 mi away24/7
2Northeast Heating & Cooling915.0★ (449)Haverhill, 9 mi away24/7
3High Ground Service Pros - Plumbers Electricians & HVAC Technicians904.9★ (2,303)Manchester, 17 mi away24/7
4Patriot Oil Burner Service905.0★ (263)Chester, 8 mi away24/7
5128 Plumbing, Heating, Cooling & Electric905.0★ (562)North Andover, 14 mi away24/7
6Heritage Home Service904.8★ (3,352)Wilmington, 19 mi away24/7
7Heritage Home Service894.9★ (2,248)Hampton, 20 mi away24/7
8MillTown Plumbing, Heating, Cooling and Electrical894.8★ (2,927)Chelmsford, 20 mi away24/7
9Southern New Hampshire Plumbing and Heating894.8★ (433)Londonderry, 9 mi away24/7
10MVP Home Services894.7★ (545)Haverhill, 9 mi away24/7

Call an emergency HVAC contractor in Hampstead now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency HVAC contractors in Hampstead, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 634 is on the HVAC contractors page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  22. #22 NextGen Aire

    Based in Amesbury, 12 mi away

    88/100CR Score

    Ranked #22 because of its Google rating and availability: 4.8★ from 271 Google reviews, open 24/7.

    • 4.8★ from 271 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    31 S Hunt Rd, Amesbury, MA 01913
    View profile for NextGen Aire(978) 566-9601

  24. #24 Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH

    Based in Sandown, 6 mi away

    88/100CR Score

    Ranked #24 because of its Google rating and availability: 5.0★ from 51 Google reviews, open 24/7.

    • 5.0★ from 51 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    265 Fremont Rd, Sandown, NH 03873
    View profile for Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH(603) 634-8531

Top 50 of 634 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Hampstead, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Wilson Brothers Heating & Air Conditioning, Inc.884.9★ (1,275)24 mi
27128 Plumbing, Heating, Cooling & Electric885.0★ (443)20 mi
28Bill Trombly Plumbing - Heating - Cooling - Electric884.7★ (598)15 mi
29A. Fagundes Plumbing & Heating Inc.874.9★ (348)17 mi
30Brookside Heating & Cooling (fka Brookside Mechanical, Inc.)874.9★ (167)13 mi
31Traditional Oil Heating Services875.0★ (33)6 mi
32Absolute Precision Plumbing, Heating & Cooling874.9★ (491)22 mi
33Patriot Heating & Cooling, LLC874.8★ (174)14 mi
34Cool-Rite Mechanical Inc.864.9★ (183)17 mi
35Addario's Plumbing, Heating, Cooling & Electrical Services864.6★ (2,076)24 mi
36Excel Mechanical864.8★ (444)20 mi
37Danerik Mechanical, LLC.865.0★ (45)11 mi
38Triumph Home Services864.9★ (539)24 mi
39Cal's Air Conditioning & Heating865.0★ (18)5 mi
40Ferris Plumbing, Heating & Air864.9★ (320)22 mi
41American Air HVAC864.8★ (223)18 mi
42Cooling Unlimited, Inc.864.8★ (741)25 mi
43Denommee Plumbing, HVAC & Electric864.7★ (427)19 mi
44Extreme Plumbing864.7★ (51)9 mi
45YurTek - Heating and Cooling865.0★ (86)16 mi
46LHR Plumbing, Heating & AC Repair864.9★ (128)18 mi
47R.H. Young Cooling and Heating, Inc.864.8★ (265)21 mi
48Druziako HVAC Inc.854.8★ (185)19 mi
49HeatPro HVAC854.8★ (138)18 mi
50Clear All Cooling & Heating855.0★ (54)15 mi

How we ranked emergency HVAC contractors in Hampstead

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Hampstead: questions

Which HVAC contractors in Hampstead are open 24/7?

25 on this list post 24/7 hours, including Heritage Home Service, Northeast Heating & Cooling, High Ground Service Pros - Plumbers Electricians & HVAC Technicians, Patriot Oil Burner Service and 128 Plumbing, Heating, Cooling & Electric.

Who is ranked #1 for emergency heating and cooling in Hampstead, NH?

Heritage Home Service is #1, with a CR Score of 93 out of 100 on emergency weights.

How are emergency HVAC contractors in Hampstead ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Hampstead

  1. October 2026: CR Scores recalculated for 634 hvac contractors serving Hampstead.
  2. October 2026: 9 duplicate listings merged.

More emergency and heating and cooling pages