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Emergency HVAC Contractors in Baltimore, MD (2026)

Top 50 of 649 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 Baltimore: Michael & Son 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 Baltimore at a glance

Top emergency HVAC contractors in Baltimore at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Michael & Son Services674.7★ (8,039)Baltimore24/7
2Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical664.8★ (4,514)Baltimore24/7
3Complete Climate Services LLC655.0★ (786)Baltimore24/7
4At Your Service Heating and Cooling LLC634.6★ (811)Baltimore24/7
5Beltway Air Conditioning, Heating & Plumbing634.9★ (2,167)Hanover, 10 mi away24/7
6Abbott Brothers Plumbing & Heating of Maryland634.8★ (354)Baltimore24/7
7Boothe's Heating, Air, Plumbing, Drains & Electrical634.9★ (1,461)Dundalk, 9 mi away24/7
8Alpha Heating & Air Conditioning, LLC634.9★ (419)Arbutus, 3 mi away24/7
9Len The Plumber Heating & Air, LLC634.7★ (15,911)Arbutus, 4 mi away24/7
10One Hour Air Conditioning & Heating® of Baltimore624.8★ (219)Baltimore24/7

Call an emergency HVAC contractor in Baltimore 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 Baltimore, 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 649 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 Baltimore

    #1 Michael & Son Services

    Based in Baltimore

    67/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.7★ from 8,039 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 8,039 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6420 Erdman Ave, Baltimore, MD 21205
    View profile for Michael & Son Services(410) 929-7190

  11. #11 A.J. Michaels

    Based in Baltimore

    62/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.5★ from 309 Google reviews, listed on Google as “HVAC contractor”.

    • 4.5★ from 309 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4512 York Rd, Baltimore, MD 21212
    View profile for A.J. Michaels(410) 435-5400

  20. #20 Farnen & Dermer

    Based in Owings Mills, 13 mi away

    61/100CR Score

    Ranked #20 because of its Google rating and trade focus: 4.8★ from 931 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 931 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10500 Reisterstown Rd, Owings Mills, MD 21117
    View profile for Farnen & Dermer(410) 367-7777

  23. #23 Tario HVAC, LLC

    Based in Arbutus, 5 mi away

    61/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 142 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 142 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1319 Maple Ave, Halethorpe, MD 21227
    View profile for Tario HVAC, LLC(410) 314-1161

Top 50 of 649 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 Baltimore, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Tack Mechanical LLC614.8★ (57)In Baltimore
27ARS / Rescue Rooter614.4★ (3,510)16 mi
28Ambient LLC604.8★ (336)10 mi
29ABC Cooling & Heating LLC604.7★ (247)8 mi
30Beyond Cooling LLC604.9★ (82)4 mi
31G & G Mechanical Heating & AC604.7★ (51)In Baltimore
32Blue Dot Services604.5★ (7,297)24 mi
33Triple E604.9★ (469)16 mi
34Warrior Plumbing & Heating604.9★ (400)In Baltimore
35Aire-Craft Heating & Cooling Co Inc604.8★ (26)In Baltimore
36Bay Area Mechanical Services Inc.604.5★ (37)In Baltimore
37Greenfox Cooling, Heating & Plumbing604.8★ (238)12 mi
38Grove Heating & Cooling604.9★ (1,156)21 mi
39Free Da Block Drain Cleaning Services, LLC,605.0★ (20)In Baltimore
40Barstow & Sons Heating and Cooling594.9★ (1,127)22 mi
41Dalton Air Conditioning Repair595.0★ (44)5 mi
42One Hour Air Conditioning & Heating® of Annapolis594.8★ (367)15 mi
43AIRSOURCE, LLC595.0★ (17)In Baltimore
44ES HVAC SERVICES LLC594.8★ (19)In Baltimore
45F.H. Furr Plumbing, Heating, Air Conditioning & Electrical594.7★ (1,847)23 mi
46AAA Air Conditioning and Refrigeration594.6★ (23)In Baltimore
47Carver Heating & Cooling595.0★ (46)7 mi
48Quartner’s594.6★ (22)In Baltimore
49JDL HVAC & Plumbing Services594.8★ (678)19 mi
50Heating and Air Conditioning Baltimore595.0★ (16)In Baltimore

How we ranked emergency HVAC contractors in Baltimore

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 Baltimore: questions

Which HVAC contractors in Baltimore are open 24/7?

25 on this list post 24/7 hours, including Michael & Son Services, Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, Complete Climate Services LLC, At Your Service Heating and Cooling LLC and Beltway Air Conditioning, Heating & Plumbing.

Who is ranked #1 for emergency heating and cooling in Baltimore, MD?

Michael & Son Services is #1, with a CR Score of 67 out of 100 on emergency weights.

How are emergency HVAC contractors in Baltimore 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 Baltimore

  1. October 2026: CR Scores recalculated for 649 hvac contractors serving Baltimore.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages