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Emergency HVAC Contractors in Lanham, MD (2026)

Top 50 of 1,040 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 Lanham: United Air Temp, 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 Lanham at a glance

Top emergency HVAC contractors in Lanham at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1United Air Temp644.8★ (1,306)Greenbelt, 2 mi away24/7
2Len The Plumber Heating & Air, LLC644.6★ (8,136)Silver Spring, 9 mi away24/7
3Belair Engineering and Service Company, Inc.634.9★ (1,421)Greater Upper Marlboro, 9 mi away24/7
4Grove Heating & Cooling634.9★ (1,156)Crofton, 9 mi away24/7
5Michael & Son Services634.7★ (15,537)Alexandria, 20 mi away24/7
6GAC Services624.9★ (6,908)Gaithersburg, 21 mi away24/7
7F.H. Furr Plumbing, Heating, Air Conditioning & Electrical624.7★ (5,985)Rockville, 17 mi away24/7
8United Air Temp624.8★ (1,775)Fort Washington, 12 mi away24/7
9ARS / Rescue Rooter624.4★ (3,510)Laurel, 11 mi away24/7
10JDL HVAC & Plumbing Services624.8★ (678)Laurel, 8 mi away24/7

Call an emergency HVAC contractor in Lanham 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 Lanham, 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 1,040 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 Lanham

    #1 United Air Temp

    Based in Greenbelt, 2 mi away

    64/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.8★ from 1,306 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,306 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7255 Hanover Pkwy Ste A, Greenbelt, MD 20770
    View profile for United Air Temp(240) 713-3314

  5. #5 Michael & Son Services

    Based in Alexandria, 20 mi away

    63/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.7★ from 15,537 Google reviews, listed on Google as “HVAC contractor”.

    • 4.7★ from 15,537 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5740 General Washington Dr, Alexandria, VA 22312
    View profile for Michael & Son Services(800) 948-6453

  6. #6 GAC Services

    Based in Gaithersburg, 21 mi away

    62/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.9★ from 6,908 Google reviews, listed on Google as “Heating contractor”.

    • 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

  8. #8 United Air Temp

    Based in Fort Washington, 12 mi away

    62/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.8★ from 1,775 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,775 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5620 St Barnabas Rd Ste 240, Fort Washington, MD 20744
    View profile for United Air Temp(240) 342-3956

  9. #9 ARS / Rescue Rooter

    Based in Laurel, 11 mi away

    62/100CR Score

    Ranked #9 because of its Google rating and trade focus: 4.4★ from 3,510 Google reviews, listed on Google as “HVAC contractor”.

    • 4.4★ from 3,510 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    9010 Maier Rd # 105, Laurel, MD 20723
    View profile for ARS / Rescue Rooter(301) 276-4499

  10. #10 JDL HVAC & Plumbing Services

    Based in Laurel, 8 mi away

    62/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.8★ from 678 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 678 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    14300 Cherry Lane Ct Ste 116, Laurel, MD 20707
    View profile for JDL HVAC & Plumbing Services

  12. #12 CroppMetcalfe

    Based in Fairfax, 21 mi away

    62/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.8★ from 7,638 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 7,638 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    8421 Hilltop Rd, Fairfax, VA 22031
    View profile for CroppMetcalfe(703) 420-5030

  17. #17 John C. Flood

    Based in Alexandria, 20 mi away

    62/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.8★ from 4,976 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 4,976 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6430 General Green Way, Alexandria, VA 22312
    View profile for John C. Flood(571) 605-7008

  24. #24 Bethany Air

    Based in Edgewater, 17 mi away

    61/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.8★ from 1,251 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 1,251 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    171 MD-253, Edgewater, MD 21037
    View profile for Bethany Air(410) 431-2312

Top 50 of 1,040 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 Lanham, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26ClimateCare HVAC Services, LLC.604.9★ (221)9 mi
27OHA HVAC, Plumbing, Chimney & Fireplaces604.9★ (1,794)21 mi
28JC & JC HVAC604.7★ (503)11 mi
29Caffi Services604.9★ (508)14 mi
30Cyprus Air Heating, Cooling and Fireplaces604.7★ (1,402)17 mi
31EzGreen Air duct And Dryer Vent Cleaning604.9★ (130)7 mi
32Su' Coy Heating, AC & Duct Cleaning604.9★ (205)10 mi
33Thomas E Clark Inc604.8★ (299)11 mi
34Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical604.8★ (291)10 mi
35Presidential, Inc.604.9★ (1,701)21 mi
36Vito Services604.7★ (1,351)17 mi
37All-Pro Inc604.5★ (246)7 mi
38Michael Bonsby HVAC, Plumbing & Electrical604.8★ (2,083)21 mi
39USA HVAC Services605.0★ (179)11 mi
40F.H. Furr Plumbing, Heating, Air Conditioning & Electrical604.7★ (4,469)24 mi
41Michael & Son Services604.7★ (419)12 mi
42Parker Pearce Service Experts604.8★ (1,700)21 mi
43United Air Temp604.8★ (1,318)20 mi
44CJ Hopkins Mechanical, LLC604.9★ (31)1 mi
45TRINITY PRO SERVICES604.7★ (257)10 mi
46Boothe's Heating, Air, Plumbing, Drains & Electrical604.9★ (1,461)22 mi
47Zapata’s HVAC Systems604.9★ (107)8 mi
48AG Services – Electrical, Air Conditioning, Heating & Plumbing604.9★ (440)16 mi
49Fixed Right & Guaranteed Super Techs, LLC605.0★ (1,032)23 mi
50Cycle Heating and Cooling, LLC594.9★ (77)8 mi

How we ranked emergency HVAC contractors in Lanham

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 Lanham: questions

Which HVAC contractors in Lanham are open 24/7?

25 on this list post 24/7 hours, including United Air Temp, Len The Plumber Heating & Air, LLC, Belair Engineering and Service Company, Inc., Grove Heating & Cooling and Michael & Son Services.

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

United Air Temp is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency HVAC contractors in Lanham 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?

24 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Lanham

  1. October 2026: CR Scores recalculated for 1,040 hvac contractors serving Lanham.
  2. October 2026: 10 duplicate listings merged.

More emergency and heating and cooling pages