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Emergency HVAC Contractors in Concord, MA (2026)

Top 50 of 1,242 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 Concord: Papalia Home Services, 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 Concord at a glance

Top emergency HVAC contractors in Concord at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Papalia Home Services664.9★ (3,978)Acton, 9 mi away24/7
2Central Cooling & Heating654.9★ (3,169)Woburn, 11 mi away24/7
3128 Plumbing, Heating, Cooling & Electric644.9★ (3,912)Wakefield, 14 mi away24/7
4MillTown Plumbing, Heating, Cooling and Electrical644.8★ (2,927)Chelmsford, 11 mi away24/7
5Winters Home Services644.8★ (2,862)Watertown, 11 mi away24/7
6Akian Plumbing, Heating, Cooling & Electric644.8★ (1,625)Watertown, 10 mi away24/7
7Heritage Home Service644.8★ (3,352)Wilmington, 14 mi away24/7
8Addario's Plumbing, Heating, Cooling & Electrical Services634.6★ (2,076)Wilmington, 11 mi away24/7
9Nicholson Plumbing, Electrical, Heating, and Air Conditioning634.8★ (2,950)Holliston, 17 mi away24/7
10128 Plumbing, Heating, Cooling & Electric635.0★ (443)Chelmsford, 10 mi away24/7

Call an emergency HVAC contractor in Concord 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 Concord, 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 1,242 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.

  1. Ranked #1 in Concord

    #1 Papalia Home Services

    Based in Acton, 9 mi away

    66/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.9★ from 3,978 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 3,978 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1220 Liberty Square Rd, Boxborough, MA 01719
    View profile for Papalia Home Services(978) 897-1701

  7. #7 Heritage Home Service

    Based in Wilmington, 14 mi away

    64/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.8★ from 3,352 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 3,352 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    323 Andover St STE 2, Wilmington, MA 01887
    View profile for Heritage Home Service(978) 254-4602

  24. #24 Excel Mechanical

    Based in Tewksbury, 11 mi away

    62/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.8★ from 444 Google reviews, listed on Google as “Air conditioning contractor”.

    • 4.8★ from 444 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2261 Main St, Tewksbury, MA 01876
    View profile for Excel Mechanical(617) 394-1104

Top 50 of 1,242 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 Concord, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Comfort Masters Heating614.8★ (95)3 mi
27R.H. Young Cooling and Heating, Inc.614.8★ (265)9 mi
28Trust 1 Services Plumbing, Heating, and Air Conditioning614.8★ (1,567)20 mi
29Yellow Dog Plumbing, Heating & Cooling615.0★ (259)12 mi
30PerfectTemp Heating, Air & Electric614.9★ (100)6 mi
31CPS Heating & Cooling614.9★ (781)19 mi
32Green Tech Plumbing & Heating614.8★ (451)14 mi
33KEN's HVAC SERVICE615.0★ (97)7 mi
34Blue Bear Plumbing, Heating & Air614.9★ (234)12 mi
35Sila Heating, Air Conditioning, Plumbing & Electrical614.7★ (483)14 mi
36A&L Plumbing, Heating, and AC Repair614.9★ (169)11 mi
37128 Plumbing, Heating, Cooling & Electric615.0★ (562)20 mi
38A&L Plumbing, Heating, and AC Repair614.6★ (174)8 mi
39Harbor Home Services615.0★ (114)10 mi
40Atlantic Heating & Air Conditioning614.8★ (353)15 mi
41Comfort Masters Heating614.9★ (80)7 mi
42Denommee Plumbing, HVAC & Electric614.7★ (427)14 mi
43Absolute Precision Plumbing, Heating & Cooling604.9★ (491)18 mi
44Super Service Today604.7★ (1,672)22 mi
45Comfort Masters Heating604.9★ (88)8 mi
46Denommee Plumbing, HVAC & Electric604.7★ (133)8 mi
47PerfectTemp HVAC Service604.9★ (63)6 mi
48Spencer Plumbing Sewer and Drain Cleaning604.9★ (839)22 mi
49Walley's Heating & Air604.9★ (793)21 mi
50Druziako HVAC Inc.604.8★ (185)12 mi

How we ranked emergency HVAC contractors in Concord

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 Concord: questions

Which HVAC contractors in Concord are open 24/7?

25 on this list post 24/7 hours, including Papalia Home Services, Central Cooling & Heating, 128 Plumbing, Heating, Cooling & Electric, MillTown Plumbing, Heating, Cooling and Electrical and Winters Home Services.

Who is ranked #1 for emergency heating and cooling in Concord, MA?

Papalia Home Services is #1, with a CR Score of 66 out of 100 on emergency weights.

How are emergency HVAC contractors in Concord 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 Concord

  1. October 2026: CR Scores recalculated for 1,242 hvac contractors serving Concord.
  2. October 2026: 9 duplicate listings merged.

More emergency and heating and cooling pages