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Emergency HVAC Contractors in Mansfield City, CT (2026)

Top 50 of 261 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 Mansfield City: CNM Heating Cooling Piping 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 Mansfield City at a glance

Top emergency HVAC contractors in Mansfield City at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1CNM Heating Cooling Piping LLC645.0★ (186)Storrs, 2 mi away24/7
2Degree Heating and Cooling624.8★ (1,302)Glastonbury, 19 mi away24/7
3DTS Oil & Gas Service & Solutions LLC615.0★ (150)Hebron, 10 mi away24/7
4HARP Home Services - Air Conditioning, Heating, Plumbing, & Electrical614.5★ (4,138)Windsor, 24 mi away24/7
5Absolute Air Services, LLC614.9★ (1,027)Portland, 23 mi away24/7
6Corbett HVAC Services LLC604.4★ (80)Willimantic, 4 mi away24/7
7SM Mechanical Services LLC604.8★ (618)Glastonbury, 20 mi away24/7
8Wyman Energy Services Inc.594.8★ (172)Manchester, 16 mi away24/7
9Limitless Mechanical Services585.0★ (64)Manchester, 15 mi away24/7
10Clog Master Plumbing, HVAC and Water Damage Restoration Services584.7★ (412)West Hartford, 25 mi away24/7

Call an emergency HVAC contractor in Mansfield City 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 Mansfield City, 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 261 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.

  12. #12 Taylor Energy

    Based in Ellington, 19 mi away

    57/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.4★ from 138 Google reviews, listed on Google as “HVAC contractor”.

    • 4.4★ from 138 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    152 Broad Brook Rd, Broad Brook, CT 06016
    View profile for Taylor Energy(860) 623-3308

  18. #18 KSB Electric

    Based in Glastonbury Center, 10 mi away

    56/100CR Score

    Ranked #18 because of its Google rating and review volume: 5.0★ from 245 Google reviews.

    • 5.0★ from 245 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    59 Loomis Rd, Bolton, CT 06043
    View profile for KSB Electric(860) 854-3772

  20. #20 Air Pro Services LLC

    Based in Plainfield, 12 mi away

    55/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “HVAC contractor”.

    • 4.6★ from 9 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    54 Woodchuck Hill Rd, Canterbury, CT 06331
    View profile for Air Pro Services LLC(860) 334-3031

  25. #25 Cundiff HVAC

    Based in Farmington, 19 mi away

    55/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.4★ from 23 Google reviews, listed on Google as “HVAC contractor”.

    • 4.4★ from 23 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Cundiff HVAC(860) 730-1100

Top 50 of 261 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 Mansfield City, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Preferred Propane553.6★ (14)14 mi
27Sprague Heating & Cooling LLC555.0★ (8)15 mi
28Marlborough Heating & AC554.2★ (5)12 mi
29Bobby's Burner Service544.9★ (13)20 mi
30Wittig Mechanical, Llc543.7★ (9)16 mi
31Cool Spaces Services545.0★ (15)22 mi
32Deitch Energy LLC544.0★ (70)24 mi
33Air Control Mechanical LLC545.0★ (4)15 mi
34Action Air Systems, Inc.543.2★ (9)17 mi
35Carnot Heating544.6★ (9)20 mi
36Rapid Service LLC534.4★ (74)5 mi
37Controlled Mechanicals535.0★ (8)20 mi
38Reliable Mechanical Contractors533.0★ (10)17 mi
39Dyson's Oil Burner & Air Conditioning534.6★ (9)22 mi
40KB Plumbing and HVAC LLC535.0★ (8)23 mi
41Russ Energy535.0★ (8)23 mi
42SLS HEATING LLC- 24 HOUR EMERGENCY SERVICE533.4★ (62)24 mi
43Alternative Mechanical Services, LLC533.9★ (18)24 mi
44Tucker Mechanical524.4★ (7)24 mi
45Air Guarden525.0★ (59)15 mi
46Callahan's Plumbing & Heating514.7★ (24)21 mi
47Freedom Mechanical Services Inc502.3★ (3)25 mi
48David Robbin Plumbing & Heating505.0★ (7)19 mi
49Petro Home Services504.1★ (119)20 mi
50Rainville Plumbing & Heating505.0★ (4)17 mi

How we ranked emergency HVAC contractors in Mansfield City

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 Mansfield City: questions

Which HVAC contractors in Mansfield City are open 24/7?

25 on this list post 24/7 hours, including CNM Heating Cooling Piping LLC, Degree Heating and Cooling, DTS Oil & Gas Service & Solutions LLC, HARP Home Services - Air Conditioning, Heating, Plumbing, & Electrical and Absolute Air Services, LLC.

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

CNM Heating Cooling Piping LLC is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Mansfield City 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 Mansfield City

  1. October 2026: CR Scores recalculated for 261 hvac contractors serving Mansfield City.
  2. October 2026: 3 duplicate listings merged.

More emergency and heating and cooling pages