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Emergency HVAC Contractors in Mount Airy, MD (2026)

Top 50 of 442 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 Mount Airy: One Hour Air Conditioning & Heating® of Mount Airy, 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 Mount Airy at a glance

Top emergency HVAC contractors in Mount Airy at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1One Hour Air Conditioning & Heating® of Mount Airy654.7★ (852)Mount Airy24/7
2GAC Services644.9★ (6,908)Gaithersburg, 17 mi away24/7
3Presidential, Inc.634.9★ (1,701)Gaithersburg, 14 mi away24/7
4Michael Bonsby HVAC, Plumbing & Electrical634.8★ (2,083)Gaithersburg, 14 mi away24/7
5F.H. Furr Plumbing, Heating, Air Conditioning & Electrical634.7★ (5,985)Rockville, 20 mi away24/7
6Parker Pearce Service Experts624.8★ (1,700)Gaithersburg, 15 mi away24/7
7F.H. Furr Plumbing, Heating, Air Conditioning & Electrical624.7★ (1,847)Eldersburg, 14 mi away24/7
8Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical624.8★ (4,514)Baltimore, 22 mi away24/7
9Wenbrooke Services - Electrical, Plumbing, Heating and Air624.8★ (1,208)Frederick, 15 mi away24/7
10Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical624.8★ (932)Frederick, 14 mi away24/7

Call an emergency HVAC contractor in Mount Airy 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 Mount Airy, 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 442 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.

  2. #2 GAC Services

    Based in Gaithersburg, 17 mi away

    64/100CR Score

    Ranked #2 because of its Google rating and review volume: 4.9★ from 6,908 Google reviews.

    • 4.9★ from 6,908 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    227 E Deer Park Dr, Gaithersburg, MD 20877
    View profile for GAC Services(301) 202-1641

  3. #3 Presidential, Inc.

    Based in Gaithersburg, 14 mi away

    63/100CR Score

    Ranked #3 because of its Google rating and trade focus: 4.9★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 1,701 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    8000 Cessna Ave, Gaithersburg, MD 20879
    View profile for Presidential, Inc.(301) 719-3315

  11. #11 Warner Service

    Based in Frederick, 13 mi away

    61/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 537 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 537 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    217 Monroe Ave, Frederick, MD 21701
    View profile for Warner Service(301) 200-9774

  13. #13 Frederick Air Inc

    Based in Frederick, 13 mi away

    61/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.8★ from 414 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 414 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3 King Ave, Frederick, MD 21701
    View profile for Frederick Air Inc(301) 845-5652

  16. #16 Vito Services

    Based in Rockville, 19 mi away

    61/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.7★ from 1,351 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 1,351 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    681 Southlawn Ln, Rockville, MD 20850
    View profile for Vito Services(301) 861-3908

  19. #19 United Air Temp

    Based in Frederick, 18 mi away

    60/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.7★ from 928 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 928 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5305 Jefferson Pike Suite 5, Frederick, MD 21703
    View profile for United Air Temp(240) 680-9304

  21. #21 Urbana HVAC

    Based in Ballenger Creek, 13 mi away

    60/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 182 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 182 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Urbana HVAC(240) 723-3860

  22. #22 Farnen & Dermer

    Based in Owings Mills, 20 mi away

    60/100CR Score

    Ranked #22 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

  24. #24 Metro Services HVAC

    Based in Gaithersburg, 16 mi away

    60/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.9★ from 298 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 298 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    30 N Summit Ave Unit 2, Gaithersburg, MD 20877
    View profile for Metro Services HVAC(240) 676-1804

  25. #25 Triple E

    Based in Reisterstown, 19 mi away

    60/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.9★ from 469 Google reviews, listed on Google as “HVAC contractor”.

    • 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

Top 50 of 442 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 Mount Airy, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26closed604.8★ (240)14 mi
27Tim Kyle Electric, Heating & Cooling605.0★ (2,777)16 mi
28Environmental Systems Associates604.9★ (658)22 mi
29Making Air Right604.9★ (361)19 mi
30Fire n Ice Hvac, Inc595.0★ (90)13 mi
31M&M Welding and Fabricators, Inc.594.7★ (12)In Mount Airy
32Wyant Service Experts594.8★ (165)15 mi
33Clarksburg Heating594.9★ (60)10 mi
34Wenbrooke Services AC Repair, Plumbing, Heating and Electrician595.0★ (111)15 mi
35JC & JC HVAC594.7★ (503)21 mi
36P&Y Heating and Cooling595.0★ (85)15 mi
37United Air Temp594.9★ (180)19 mi
38Brick Street Plumbing & HVAC584.2★ (364)14 mi
39Skyline Heating and Air585.0★ (30)9 mi
40Greenfox Cooling, Heating & Plumbing584.8★ (238)21 mi
41Mario Bro, LLC585.0★ (53)15 mi
42Michael & Son Services584.7★ (419)24 mi
43AMS Air Conditioning & Heating574.9★ (116)20 mi
44Beltway Air Conditioning, Heating & Plumbing574.9★ (90)19 mi
45United Air Temp574.7★ (75)17 mi
46Apple Plumbing, Heating, & Air575.0★ (216)11 mi
47ClemAIR Heating & Cooling, LLC575.0★ (9)8 mi
48Long Mechanical Services LLC575.0★ (19)12 mi
49ASC HVAC574.7★ (13)9 mi
50Brothers HVAC LLC574.9★ (76)20 mi

How we ranked emergency HVAC contractors in Mount Airy

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 Mount Airy: questions

Which HVAC contractors in Mount Airy are open 24/7?

25 on this list post 24/7 hours, including One Hour Air Conditioning & Heating® of Mount Airy, GAC Services, Presidential, Inc., Michael Bonsby HVAC, Plumbing & Electrical and F.H. Furr Plumbing, Heating, Air Conditioning & Electrical.

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

One Hour Air Conditioning & Heating® of Mount Airy is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Mount Airy 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 Mount Airy

  1. October 2026: CR Scores recalculated for 442 hvac contractors serving Mount Airy.

More emergency and heating and cooling pages