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ContractorsRanked

Emergency HVAC Contractors in Lochearn, MD (2026)

Top 50 of 635 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 Lochearn: Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, 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 Lochearn at a glance

Top emergency HVAC contractors in Lochearn at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical944.8★ (4,514)Baltimore, 2 mi away24/7
2Michael & Son Services924.7★ (8,039)Baltimore, 10 mi away24/7
3Complete Climate Services LLC915.0★ (786)Baltimore, 8 mi away24/7
4Alpha Heating & Air Conditioning, LLC914.9★ (419)Arbutus, 4 mi away24/7
5Beltway Air Conditioning, Heating & Plumbing914.9★ (2,167)Hanover, 13 mi away24/7
6Farnen & Dermer904.8★ (931)Owings Mills, 6 mi away24/7
7Len The Plumber Heating & Air, LLC904.7★ (15,911)Arbutus, 7 mi away24/7
8Boothe's Heating, Air, Plumbing, Drains & Electrical894.9★ (1,461)Dundalk, 15 mi away24/7
9Abbott Brothers Plumbing & Heating of Maryland894.8★ (354)Baltimore, 5 mi away24/7
10One Hour Air Conditioning & Heating® of Baltimore894.8★ (219)Baltimore, 3 mi away24/7

Call an emergency HVAC contractor in Lochearn 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 Lochearn, 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 635 is on the HVAC contractors page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  6. #6 Farnen & Dermer

    Based in Owings Mills, 6 mi away

    90/100CR Score

    Ranked #6 because of its Google rating and availability: 4.8★ from 931 Google reviews, open 24/7.

    • 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

  11. #11 Triple E

    Based in Reisterstown, 9 mi away

    89/100CR Score

    Ranked #11 because of its Google rating and availability: 4.9★ from 469 Google reviews, open 24/7.

    • 4.9★ from 469 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    655 Main St #1959, Reisterstown, MD 21136
    View profile for Triple E(410) 833-1133

  17. #17 United Air Temp

    Based in Owings Mills, 8 mi away

    88/100CR Score

    Ranked #17 because of its Google rating and availability: 4.9★ from 180 Google reviews, open 24/7.

    • 4.9★ from 180 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    500 Redland Ct # 107, Owings Mills, MD 21117
    View profile for United Air Temp(410) 999-8288

  20. #20 Tario HVAC, LLC

    Based in Arbutus, 7 mi away

    88/100CR Score

    Ranked #20 because of its Google rating and availability: 4.9★ from 142 Google reviews, open 24/7.

    • 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 635 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 Lochearn, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Breezy Heating Ventilation and Air Conditioning874.8★ (121)7 mi
27Contemporary Air Systems, Inc.875.0★ (195)14 mi
28A.J. Michaels874.5★ (309)6 mi
29Hughes Mechanical, LLC874.8★ (408)14 mi
30Brothers HVAC LLC874.9★ (76)7 mi
31Carver Heating & Cooling875.0★ (46)5 mi
32Ambient LLC874.8★ (336)14 mi
33ARS / Rescue Rooter874.4★ (3,510)16 mi
34Reliability Home Services874.7★ (539)15 mi
35First Class Mechanical874.9★ (580)20 mi
36Thornton Heating & Air Conditioning875.0★ (33)5 mi
37JDL HVAC & Plumbing Services874.8★ (678)19 mi
38Grove Heating & Cooling874.9★ (1,156)24 mi
39Blue Dot Services864.5★ (7,297)25 mi
40Warrior Plumbing & Heating864.9★ (400)5 mi
41Beltway Air Conditioning, Heating & Plumbing864.9★ (90)11 mi
42Free Da Block Drain Cleaning Services, LLC,865.0★ (20)3 mi
43THE ELECTRICIANS864.9★ (98)12 mi
44United Air Temp864.8★ (171)14 mi
45Apple Plumbing, Heating, & Air864.9★ (679)24 mi
46G & G Mechanical Heating & AC864.7★ (51)6 mi
47Beltway Air Conditioning, Heating and Plumbing865.0★ (129)16 mi
48ABC Cooling & Heating LLC864.7★ (247)15 mi
49Quartner’s864.6★ (22)1 mi
50USA HVAC Services865.0★ (179)19 mi

How we ranked emergency HVAC contractors in Lochearn

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Lochearn: questions

Which HVAC contractors in Lochearn are open 24/7?

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

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

Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical is #1, with a CR Score of 94 out of 100 on emergency weights.

How are emergency HVAC contractors in Lochearn ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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 Lochearn

  1. October 2026: CR Scores recalculated for 635 hvac contractors serving Lochearn.
  2. October 2026: 2 duplicate listings merged.

More emergency and heating and cooling pages