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Emergency HVAC Contractors in Shelton, CT (2026)

Top 50 of 506 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 Shelton: A & S Nathan Heating & Cooling LLC, 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 Shelton at a glance

Top emergency HVAC contractors in Shelton at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1A & S Nathan Heating & Cooling LLC654.8★ (446)Ansonia, 1 mi away24/7
2HL Bowman Inc Plumbing Heating & AC654.7★ (1,151)Milford, 7 mi away24/7
3Aire Serv of Shelton654.8★ (347)Ansonia, 1 mi away24/7
4Levco Oil & Propane644.7★ (590)Trumbull, 6 mi away24/7
5Celco Heating & Air Conditioning644.7★ (861)Bridgeport, 9 mi away24/7
6Edgerton, Inc.634.8★ (555)Bethel, 9 mi away24/7
7Tyler Heating, Air Conditioning, Refrigeration LLC634.7★ (570)Stratford, 10 mi away24/7
8Air, Inc.624.8★ (692)Branford, 14 mi away24/7
9Ward Heating and Cooling LLC625.0★ (240)Bethel, 10 mi away24/7
10Aire Serv of Southwest Connecticut624.8★ (565)Ansonia, 13 mi away24/7

Call an emergency HVAC contractor in Shelton 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 Shelton, 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 506 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  4. #4 Levco Oil & Propane

    Based in Trumbull, 6 mi away

    64/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.7★ from 590 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 590 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    55 Merritt Blvd, Trumbull, CT 06611
    View profile for Levco Oil & Propane(203) 533-8249

  6. #6 Edgerton, Inc.

    Based in Bethel, 9 mi away

    63/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.8★ from 555 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 555 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    786 Main St, Monroe, CT 06468
    View profile for Edgerton, Inc.(203) 268-6279

  8. #8 Air, Inc.

    Based in Branford, 14 mi away

    62/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.8★ from 692 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 692 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    171 Short Beach Rd, Branford, CT 06405
    View profile for Air, Inc.(203) 871-0801

Top 50 of 506 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 Shelton, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Hands On Heating Inc.604.9★ (59)10 mi
27Active Air LLC605.0★ (44)9 mi
28Shelton Oil604.4★ (16)In Shelton
29Rick's Plumbing Service, Inc.595.0★ (1,157)7 mi
30Top Tier Energy Service594.8★ (212)19 mi
31Aire Serv of New Haven594.9★ (112)16 mi
32Servco Oil & Propane595.0★ (133)18 mi
33Shelton Heating & Cooling594.3★ (12)In Shelton
34Degree Heating and Cooling594.7★ (442)23 mi
35Elite Heating And Cooling LLC595.0★ (15)4 mi
36Paul's Heating and Cooling595.0★ (44)12 mi
37Advanced Comfort Solutions595.0★ (13)4 mi
38Direct Home Services594.7★ (268)22 mi
39Climate Pros Heating & Cooling Corp585.0★ (16)7 mi
40Reliable Heating LLC584.9★ (81)18 mi
41Mobilio and Son HVAC584.7★ (112)18 mi
42SolvIt Home Services584.5★ (42)11 mi
43Reilly Mechanical HVAC585.0★ (32)13 mi
44Valley Mechanical LLC585.0★ (24)11 mi
45Climate Care, LLC584.6★ (171)20 mi
46Crocco Mechanical | HVAC Repair & Replacement in Connecticut585.0★ (58)18 mi
47Park City584.2★ (37)10 mi
48JDH Plumbing & Heating584.9★ (58)3 mi
49RB MECHANICAL LLC585.0★ (16)10 mi
50SMR Heating And Cooling585.0★ (85)22 mi

How we ranked emergency HVAC contractors in Shelton

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. 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
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Shelton: questions

Which HVAC contractors in Shelton are open 24/7?

25 on this list post 24/7 hours, including A & S Nathan Heating & Cooling LLC, HL Bowman Inc Plumbing Heating & AC, Aire Serv of Shelton, Levco Oil & Propane and Celco Heating & Air Conditioning.

Who is ranked #1 for emergency heating and cooling in Shelton, CT?

A & S Nathan Heating & Cooling LLC is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Shelton ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. 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 Shelton

  1. October 2026: CR Scores recalculated for 506 hvac contractors serving Shelton.
  2. October 2026: 4 duplicate listings merged.

More emergency and heating and cooling pages