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Emergency HVAC Contractors in Essex, MD (2026)

Top 50 of 567 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 Essex: 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 Essex at a glance

Top emergency HVAC contractors in Essex at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Michael & Son Services664.7★ (8,039)Baltimore, 3 mi away24/7
2Maryland Heating & Air634.9★ (369)Essex24/7
3Complete Climate Services LLC635.0★ (786)Baltimore, 6 mi away24/7
4Hughes Mechanical, LLC634.8★ (408)Essex24/7
5Contemporary Air Systems, Inc.635.0★ (195)Essex24/7
6Boothe's Heating, Air, Plumbing, Drains & Electrical634.9★ (1,461)Dundalk, 10 mi away24/7
7At Your Service Heating and Cooling LLC634.6★ (811)Baltimore, 3 mi away24/7
8Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical634.8★ (4,514)Baltimore, 15 mi away24/7
9Reliability Home Services634.7★ (539)Dundalk, 3 mi away24/7
10Beltway Air Conditioning, Heating & Plumbing624.9★ (2,167)Hanover, 15 mi away24/7

Call an emergency HVAC contractor in Essex 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 Essex, 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 567 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 Essex

    #1 Michael & Son Services

    Based in Baltimore, 3 mi away

    66/100CR 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

  14. #14 Blue Dot Services

    Based in Bel Air North, 19 mi away

    61/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.5★ from 7,297 Google reviews, listed on Google as “Heating contractor”.

    • 4.5★ from 7,297 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    125 Industry Ln, Forest Hill, MD 21050
    View profile for Blue Dot Services(410) 846-2992

  16. #16 Broyles HVACR

    Based in Joppatowne, 9 mi away

    61/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 244 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    37 Neptune Dr, Joppatowne, MD 21085
    View profile for Broyles HVACR(667) 228-7015

  21. #21 Rowbel Services

    Based in Essex

    60/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 32 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4 Nashua Ct #8, Essex, MD 21221
    View profile for Rowbel Services(877) 769-2351

  22. #22 A.J. Michaels

    Based in Baltimore, 8 mi away

    60/100CR Score

    Ranked #22 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

  23. #23 HGH Mechanical

    Based in Edgewood, 13 mi away

    60/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 337 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2107 Emmorton Park Rd #111, Edgewood, MD 21040
    View profile for HGH Mechanical(410) 679-3794

  25. #25 Farnen & Dermer

    Based in Owings Mills, 18 mi away

    60/100CR Score

    Ranked #25 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

Top 50 of 567 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 Essex, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Fresh Air Concepts, LLC604.9★ (217)12 mi
27One Hour Air Conditioning & Heating® of Baltimore604.8★ (219)11 mi
28Breezy Heating Ventilation and Air Conditioning594.8★ (121)9 mi
29Ambient LLC594.8★ (336)15 mi
30Barstow & Sons Heating and Cooling594.9★ (1,127)23 mi
31One Hour Air Conditioning & Heating® of Annapolis594.8★ (367)17 mi
32Tario HVAC, LLC594.9★ (142)13 mi
33AAA594.7★ (60)6 mi
34Aire-Craft Heating & Cooling Co Inc594.8★ (26)3 mi
35ARS / Rescue Rooter594.4★ (3,510)23 mi
36Environmental Systems Associates594.9★ (658)22 mi
37Aire Serv of Bel Air594.9★ (309)18 mi
38Synergy Mechanical Solutions595.0★ (37)7 mi
39D&J solutions LLC594.9★ (17)2 mi
40Anchor Mechanical LLC594.9★ (340)19 mi
41Beyond Cooling LLC594.9★ (82)11 mi
42Tack Mechanical LLC594.8★ (57)9 mi
43Triple E594.9★ (469)21 mi
44G & G Mechanical Heating & AC584.7★ (51)8 mi
45Excel Services584.9★ (411)21 mi
46Comfort Air585.0★ (65)13 mi
47First Response Heating & Cooling584.8★ (285)19 mi
48United Air Temp584.4★ (88)9 mi
49One Hour Air Conditioning & Heating® of Harford County584.8★ (292)19 mi
50Beltway Air Conditioning, Heating and Plumbing585.0★ (129)18 mi

How we ranked emergency HVAC contractors in Essex

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 Essex: questions

Which HVAC contractors in Essex are open 24/7?

25 on this list post 24/7 hours, including Michael & Son Services, Maryland Heating & Air, Complete Climate Services LLC, Hughes Mechanical, LLC and Contemporary Air Systems, Inc..

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

Michael & Son Services is #1, with a CR Score of 66 out of 100 on emergency weights.

How are emergency HVAC contractors in Essex 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 Essex

  1. October 2026: CR Scores recalculated for 567 hvac contractors serving Essex.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages