Skip to content
ContractorsRanked

Emergency HVAC Contractors in Exeter, NH (2026)

Top 50 of 336 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 Exeter: 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 Exeter at a glance

Top emergency HVAC contractors in Exeter at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Heritage Home Service934.9★ (2,248)Hampton, 7 mi away24/7
2Key Heating & Air Conditioning924.8★ (692)Exeter24/7
3Heritage Home Service914.8★ (7,956)Auburn, 21 mi away24/7
4East Coast Gas Fitters, LLC895.0★ (38)Exeter24/7
5JP HVAC - Heating & Cooling895.0★ (35)Exeter24/7
6HeatPro HVAC884.8★ (138)Chester, 6 mi away24/7
7NextGen Aire884.8★ (271)Amesbury, 10 mi away24/7
8Northeast Heating & Cooling885.0★ (449)Haverhill, 18 mi away24/7
9Diamond Mechanical LLC884.5★ (83)Exeter24/7
10Morris Plumbing, Heating & Air Conditioning885.0★ (582)Andover, 21 mi away24/7

Call an emergency HVAC contractor in Exeter 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 Exeter, 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 336 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.

  7. #7 NextGen Aire

    Based in Amesbury, 10 mi away

    88/100CR Score

    Ranked #7 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

  16. #16 Pilot Plumbing, Heating and Cooling | Plumber, Tankless Water Heater Repair & Installation | Heating & AC Repair Sandown, NH

    Based in Sandown, 11 mi away

    86/100CR Score

    Ranked #16 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 336 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 Exeter, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Danerik Mechanical, LLC.845.0★ (45)19 mi
27Extreme Plumbing844.7★ (51)16 mi
28SRV Plumbing and Heating845.0★ (58)5 mi
29T&R Oil Burner Service845.0★ (14)12 mi
30HomeStyle Heating and Air LLC845.0★ (26)17 mi
31CircumVent LLC835.0★ (40)22 mi
32Cal's Air Conditioning & Heating835.0★ (18)17 mi
33BRR HVAC/R825.0★ (5)6 mi
34Capstone Mechanical823.4★ (5)9 mi
35All American Plumbing and Heating824.9★ (58)12 mi
36Townsend Energy823.7★ (71)10 mi
37Fuel NRG824.5★ (94)23 mi
38Proactive Heating & Cooling825.0★ (12)14 mi
39Comfort Services LLC825.0★ (22)18 mi
40Kingdom Cooling824.5★ (15)18 mi
41CALLAHAN OIL BURNER SERVICE'S824.7★ (12)13 mi
42Freeman Mechanical825.0★ (8)13 mi
43Climate Design Systems, LLC814.3★ (89)22 mi
44Haverhill HVAC815.0★ (16)17 mi
45Greater Seacoast HVAC814.5★ (8)11 mi
46Complete Home Services814.8★ (20)22 mi
47Colonial Plumbing & Heating814.7★ (32)24 mi
48Coltella Heating & Cooling815.0★ (9)19 mi
49Freeman Fuel Co814.4★ (30)21 mi
50Mad Moose Mechanical815.0★ (14)22 mi

How we ranked emergency HVAC contractors in Exeter

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 Exeter: questions

Which HVAC contractors in Exeter are open 24/7?

25 on this list post 24/7 hours, including Heritage Home Service, Key Heating & Air Conditioning, Heritage Home Service, East Coast Gas Fitters, LLC and JP HVAC - Heating & Cooling.

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

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

How are emergency HVAC contractors in Exeter 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 Exeter

  1. October 2026: CR Scores recalculated for 336 hvac contractors serving Exeter.
  2. October 2026: 8 duplicate listings merged.

More emergency and heating and cooling pages