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Emergency HVAC Contractors in Urbana, MD (2026)

Top 50 of 385 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 Urbana: GAC 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 Urbana at a glance

Top emergency HVAC contractors in Urbana at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1GAC Services644.9★ (6,908)Gaithersburg, 16 mi away24/7
2Wenbrooke Services - Electrical, Plumbing, Heating and Air644.8★ (1,208)Frederick, 5 mi away24/7
3Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical644.8★ (932)Frederick, 6 mi away24/7
4Markool Heating Cooling Plumbing634.9★ (547)Frederick, 8 mi away24/7
5United Air Temp634.7★ (928)Frederick, 8 mi away24/7
6Warner Service634.8★ (537)Frederick, 6 mi away24/7
7Airtron Heating & Air Conditioning634.5★ (724)Frederick, 4 mi away24/7
8Presidential, Inc.634.9★ (1,701)Gaithersburg, 15 mi away24/7
9Michael Bonsby HVAC, Plumbing & Electrical634.8★ (2,083)Gaithersburg, 15 mi away24/7
10F.H. Furr Plumbing, Heating, Air Conditioning & Electrical634.7★ (5,985)Rockville, 20 mi away24/7

Call an emergency HVAC contractor in Urbana 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 Urbana, 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 385 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 Urbana

    #1 GAC Services

    Based in Gaithersburg, 16 mi away

    64/100CR Score

    Ranked #1 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

  5. #5 United Air Temp

    Based in Frederick, 8 mi away

    63/100CR Score

    Ranked #5 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

  6. #6 Warner Service

    Based in Frederick, 6 mi away

    63/100CR Score

    Ranked #6 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

  8. #8 Presidential, Inc.

    Based in Gaithersburg, 15 mi away

    63/100CR Score

    Ranked #8 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 Frederick Air Inc

    Based in Frederick, 6 mi away

    63/100CR Score

    Ranked #11 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

  12. #12 M.E. Flow

    Based in Leesburg, 19 mi away

    62/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.8★ from 3,718 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 3,718 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    12 Cardinal Park Dr SE STE 107, Leesburg, VA 20175
    View profile for M.E. Flow(571) 322-8847

  13. #13 Urbana HVAC

    Based in Ballenger Creek, 5 mi away

    62/100CR Score

    Ranked #13 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

  17. #17 Snell Home Services

    Based in Sterling, 24 mi away

    62/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.8★ from 5,283 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 5,283 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    22977 Eaglewood Ct STE 130, Sterling, VA 20166
    View profile for Snell Home Services(571) 470-7206

  21. #21 AllTech Services, Inc

    Based in Sterling, 24 mi away

    61/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.9★ from 2,807 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 2,807 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    101-A Executive Dr STE 200, Sterling, VA 20166
    View profile for AllTech Services, Inc(703) 214-2940

  22. #22 closed

    Based in Walkersville, 9 mi away

    61/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.8★ from 240 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 240 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for closed(301) 900-8593

  25. #25 John Nugent & Sons

    Based in Sterling, 21 mi away

    61/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.8★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,701 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    45921 Maries Rd, Sterling, VA 20166
    View profile for John Nugent & Sons(571) 506-5228

Top 50 of 385 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 Urbana, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Making Air Right614.9★ (361)14 mi
27Michael & Son Services614.9★ (1,501)22 mi
28United Air Temp614.8★ (2,161)23 mi
29Vito Services604.7★ (1,351)20 mi
30Cyprus Air Heating, Cooling and Fireplaces604.7★ (1,402)21 mi
31Brick Street Plumbing & HVAC604.2★ (364)7 mi
32Meade's Heating and Air605.0★ (710)21 mi
33Metro Services HVAC604.9★ (298)15 mi
34Prestige Home Services605.0★ (61)8 mi
35Clarksburg Heating594.9★ (60)9 mi
36Air 1 Mechanical Heating and Cooling594.9★ (440)22 mi
37B&B Air Conditioning & Heating Service595.0★ (357)23 mi
38P&Y Heating and Cooling595.0★ (85)14 mi
39Michael & Son Services594.0★ (88)6 mi
40Prime AC Repair Frederick585.0★ (15)6 mi
41Clover Contracting: Plumbing, HVAC & Air Purification584.9★ (156)20 mi
42Mario Bro, LLC585.0★ (53)15 mi
43United Air Temp584.7★ (75)14 mi
44Premier Home Comfort585.0★ (226)24 mi
45Homeland Heating and Air Conditioning585.0★ (25)12 mi
46AMS Air Conditioning & Heating574.9★ (116)21 mi
47ClemAIR Heating & Cooling, LLC575.0★ (9)7 mi
48Cube Heating & Cooling575.0★ (96)22 mi
49Akron Industrial Heating & Cooling574.5★ (8)7 mi
50Dave's Heating & Air Conditioning574.8★ (138)23 mi

How we ranked emergency HVAC contractors in Urbana

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 Urbana: questions

Which HVAC contractors in Urbana are open 24/7?

25 on this list post 24/7 hours, including GAC Services, Wenbrooke Services - Electrical, Plumbing, Heating and Air, Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical, Markool Heating Cooling Plumbing and United Air Temp.

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

GAC Services is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Urbana 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 Urbana

  1. October 2026: CR Scores recalculated for 385 hvac contractors serving Urbana.

More emergency and heating and cooling pages