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Emergency HVAC Contractors in East Riverdale, MD (2026)

Top 50 of 1,126 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 East Riverdale: Len The Plumber Heating & Air, LLC, 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 East Riverdale at a glance

Top emergency HVAC contractors in East Riverdale at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Len The Plumber Heating & Air, LLC924.6★ (8,136)Silver Spring, 6 mi away24/7
2United Air Temp924.8★ (1,306)Greenbelt, 3 mi away24/7
3GAC Services914.9★ (6,908)Gaithersburg, 18 mi away24/7
4Michael & Son Services914.7★ (15,537)Alexandria, 18 mi away24/7
5NARFIX HEATING AND AIR CONDITIONING LLC905.0★ (293)Silver Spring, 5 mi away24/7
6Belair Engineering and Service Company, Inc.904.9★ (1,421)Greater Upper Marlboro, 12 mi away24/7
7CroppMetcalfe904.8★ (7,638)Fairfax, 18 mi away24/7
8F.H. Furr Plumbing, Heating, Air Conditioning & Electrical904.7★ (5,985)Rockville, 15 mi away24/7
9United Air Temp904.8★ (1,775)Fort Washington, 11 mi away24/7
10John C. Flood904.8★ (4,976)Alexandria, 17 mi away24/7

Call an emergency HVAC contractor in East Riverdale 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 East Riverdale, 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 1,126 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.

  2. #2 United Air Temp

    Based in Greenbelt, 3 mi away

    92/100CR Score

    Ranked #2 because of its Google rating and availability: 4.8★ from 1,306 Google reviews, open 24/7.

    • 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

  3. #3 GAC Services

    Based in Gaithersburg, 18 mi away

    91/100CR Score

    Ranked #3 because of its Google rating and availability: 4.9★ from 6,908 Google reviews, open 24/7.

    • 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

  7. #7 CroppMetcalfe

    Based in Fairfax, 18 mi away

    90/100CR Score

    Ranked #7 because of its Google rating and availability: 4.8★ from 7,638 Google reviews, open 24/7.

    • 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

  9. #9 United Air Temp

    Based in Fort Washington, 11 mi away

    90/100CR Score

    Ranked #9 because of its Google rating and availability: 4.8★ from 1,775 Google reviews, open 24/7.

    • 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

  10. #10 John C. Flood

    Based in Alexandria, 17 mi away

    90/100CR Score

    Ranked #10 because of its Google rating and availability: 4.8★ from 4,976 Google reviews, open 24/7.

    • 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

  20. #20 Caffi Services

    Based in Alexandria, 12 mi away

    89/100CR Score

    Ranked #20 because of its Google rating and availability: 4.9★ from 508 Google reviews, open 24/7.

    • 4.9★ from 508 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1313 Powhatan St, Alexandria, VA 22314
    View profile for Caffi Services(703) 962-6052

  25. #25 Presidential, Inc.

    Based in Gaithersburg, 20 mi away

    88/100CR Score

    Ranked #25 because of its Google rating and availability: 4.9★ from 1,701 Google reviews, open 24/7.

    • 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

Top 50 of 1,126 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 East Riverdale, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Thomas E Clark Inc884.8★ (299)8 mi
27Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical884.8★ (291)8 mi
28Cyprus Air Heating, Cooling and Fireplaces884.7★ (1,402)14 mi
29Environmental Systems Associates884.9★ (658)15 mi
30Aire Serv of Prince Georges County884.8★ (176)6 mi
31ARS / Rescue Rooter884.4★ (3,510)12 mi
32Michael Bonsby HVAC, Plumbing & Electrical884.8★ (2,083)19 mi
33United Air Temp884.8★ (1,318)17 mi
34Vito Services884.7★ (1,351)15 mi
35AG Services – Electrical, Air Conditioning, Heating & Plumbing884.9★ (440)14 mi
36Parker Pearce Service Experts884.8★ (1,700)19 mi
37JC & JC HVAC884.7★ (503)10 mi
38Michael & Son Services884.7★ (419)10 mi
39Cycle Heating and Cooling, LLC884.9★ (77)5 mi
40F.H. Furr Plumbing, Heating, Air Conditioning & Electrical884.7★ (4,469)22 mi
41C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC884.9★ (966)19 mi
42Barstow & Sons Heating and Cooling874.9★ (1,127)21 mi
43TRINITY PRO SERVICES874.7★ (257)9 mi
44Bethany Air874.8★ (1,251)20 mi
45ClimateCare HVAC Services, LLC.874.9★ (221)13 mi
46USA HVAC Services875.0★ (179)14 mi
47GW Air Service874.9★ (270)14 mi
48Fixed Right & Guaranteed Super Techs, LLC875.0★ (1,032)24 mi
49Nelson's HVAC, LLC874.9★ (627)19 mi
50A Action Home Services874.9★ (326)16 mi

How we ranked emergency HVAC contractors in East Riverdale

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 East Riverdale: questions

Which HVAC contractors in East Riverdale are open 24/7?

25 on this list post 24/7 hours, including Len The Plumber Heating & Air, LLC, United Air Temp, GAC Services, Michael & Son Services and NARFIX HEATING AND AIR CONDITIONING LLC.

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

Len The Plumber Heating & Air, LLC is #1, with a CR Score of 92 out of 100 on emergency weights.

How are emergency HVAC contractors in East Riverdale 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?

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

Update log for East Riverdale

  1. October 2026: CR Scores recalculated for 1,126 hvac contractors serving East Riverdale.
  2. October 2026: 11 duplicate listings merged.

More emergency and heating and cooling pages