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ContractorsRanked

Emergency HVAC Contractors in Nashua, NH (2026)

Top 50 of 658 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 Nashua: Walley's Heating & Air, 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 Nashua at a glance

Top emergency HVAC contractors in Nashua at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Walley's Heating & Air934.9★ (793)Nashua24/7
2Heritage Home Service924.8★ (7,956)Auburn, 15 mi away24/7
3A. Fagundes Plumbing & Heating Inc.924.9★ (348)Nashua24/7
4Wilson Brothers Heating & Air Conditioning, Inc.924.9★ (1,275)Fitchburg, 8 mi away24/7
5A. Fagundes Plumbing & Heating Inc.924.8★ (1,626)Billerica, 8 mi away24/7
6MillTown Plumbing, Heating, Cooling and Electrical914.8★ (2,927)Chelmsford, 12 mi away24/7
7Sanford Temperature Control914.9★ (1,832)Milford, 13 mi away24/7
8Papalia Home Services914.9★ (3,978)Acton, 18 mi away24/7
9High Ground Service Pros - Plumbers Electricians & HVAC Technicians914.9★ (2,303)Manchester, 16 mi away24/7
10Ferris Plumbing, Heating & Air904.9★ (320)Litchfield, 7 mi away24/7

Call an emergency HVAC contractor in Nashua 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 Nashua, 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 658 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.

Top 50 of 658 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 Nashua, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26J. Griffin Heating & Plumbing Inc875.0★ (643)23 mi
27Druziako HVAC Inc.874.8★ (185)11 mi
28Hunter & Sons AC & Cooling874.9★ (94)11 mi
29ER Services Plumbing and Heating LLC874.8★ (313)16 mi
30YurTek - Heating and Cooling875.0★ (86)12 mi
31Brookside Heating & Cooling (fka Brookside Mechanical, Inc.)874.9★ (167)15 mi
32Excel Mechanical874.8★ (444)19 mi
33R.H. Young Cooling and Heating, Inc.874.8★ (265)16 mi
34Addario's Plumbing, Heating, Cooling & Electrical Services874.6★ (2,076)23 mi
35American Air HVAC864.8★ (223)16 mi
36Denommee Plumbing, HVAC & Electric864.9★ (51)10 mi
37BOSS HVAC864.9★ (28)7 mi
38MVP Home Services864.7★ (545)20 mi
39Aire Serv of Nashua and Salem864.1★ (14)In Nashua
40Cooling Unlimited, Inc.864.8★ (741)25 mi
41Eric C. Foster Plumbing Heating & Cooling Inc.864.9★ (619)12 mi
42LHR Plumbing, Heating & AC Repair864.9★ (128)17 mi
43Hunter & Sons AC Heating & Cooling864.8★ (71)13 mi
44Ayotte Plumbing Heating and Air Conditioning864.5★ (102)10 mi
45Christie Cooling and Heating864.8★ (223)20 mi
46HomeServe of New England864.7★ (872)25 mi
47Clear All Cooling & Heating855.0★ (54)15 mi
48Advanced Quality Air854.8★ (20)8 mi
49All Star Plumbing, Heating and Air Conditioning855.0★ (97)20 mi
50Done right plumbing heating cooling855.0★ (46)15 mi

How we ranked emergency HVAC contractors in Nashua

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 Nashua: questions

Which HVAC contractors in Nashua are open 24/7?

25 on this list post 24/7 hours, including Walley's Heating & Air, Heritage Home Service, A. Fagundes Plumbing & Heating Inc., Wilson Brothers Heating & Air Conditioning, Inc. and A. Fagundes Plumbing & Heating Inc..

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

Walley's Heating & Air is #1, with a CR Score of 93 out of 100 on emergency weights.

How are emergency HVAC contractors in Nashua 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 Nashua

  1. October 2026: CR Scores recalculated for 658 hvac contractors serving Nashua.
  2. October 2026: 7 duplicate listings merged.

More emergency and heating and cooling pages