Skip to content
ContractorsRanked

Emergency HVAC Contractors in Londontowne, MD (2026)

Top 50 of 517 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 Londontowne: Staton Heating, Cooling & Plumbing, 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 Londontowne at a glance

Top emergency HVAC contractors in Londontowne at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Staton Heating, Cooling & Plumbing654.9★ (2,904)Annapolis, 4 mi away24/7
2Bethany Air654.8★ (1,251)Edgewater, 1 mi away24/7
3Barstow & Sons Heating and Cooling644.9★ (1,127)Annapolis, 3 mi away24/7
4Grove Heating & Cooling634.9★ (1,156)Crofton, 9 mi away24/7
5Belair Engineering and Service Company, Inc.634.9★ (1,421)Greater Upper Marlboro, 10 mi away24/7
6David E White's Plumbing, Heating & Repair Company625.0★ (238)Annapolis, 4 mi away24/7
7United Air Temp624.8★ (253)Annapolis, 4 mi away24/7
8Beltway Air Conditioning, Heating & Plumbing624.9★ (2,167)Hanover, 17 mi away24/7
9Boothe's Heating, Air, Plumbing, Drains & Electrical614.9★ (1,461)Dundalk, 17 mi away24/7
10Fixed Right & Guaranteed Super Techs, LLC615.0★ (1,032)Rosaryville, 17 mi away24/7

Call an emergency HVAC contractor in Londontowne 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 Londontowne, 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 517 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 Bethany Air

    Based in Edgewater, 1 mi away

    65/100CR Score

    Ranked #2 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

  7. #7 United Air Temp

    Based in Annapolis, 4 mi away

    62/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.8★ from 253 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 253 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2553 Housley Rd, Annapolis, MD 21401
    View profile for United Air Temp(410) 705-6043

  13. #13 United Air Temp

    Based in Greenbelt, 18 mi away

    60/100CR Score

    Ranked #13 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

  15. #15 Shoreline Comfort

    Based in Stevensville, 13 mi away

    60/100CR Score

    Ranked #15 because of its Google rating and trade focus: 5.0★ from 285 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 285 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1102 Butterworth Ct suite 100, Stevensville, MD 21666
    View profile for Shoreline Comfort(410) 739-4232

  16. #16 Ambient LLC

    Based in Annapolis, 3 mi away

    60/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 52 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1910 Towne Centre Blvd Suite 250, Annapolis, MD 21401
    View profile for Ambient LLC(410) 449-4021

  19. #19 ARS / Rescue Rooter

    Based in Laurel, 20 mi away

    60/100CR Score

    Ranked #19 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

  21. #21 All Good Home Inc

    Based in Severna Park, 9 mi away

    60/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 98 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 98 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    762 Dividing Rd, Severna Park, MD 21146
    View profile for All Good Home Inc(202) 439-7718

  22. #22 United Air Temp

    Based in Fort Washington, 24 mi away

    59/100CR Score

    Ranked #22 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

  23. #23 Ambient LLC

    Based in Severn, 16 mi away

    59/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.8★ from 336 Google reviews, listed on Google as “HVAC contractor”.

    • 4.8★ from 336 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    508 Shaw Ct #103, Severn, MD 21144
    View profile for Ambient LLC(410) 429-7280

  24. #24 JDL HVAC & Plumbing Services

    Based in Laurel, 20 mi away

    59/100CR Score

    Ranked #24 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

  25. #25 B&B Co. Inc.

    Based in Annapolis, 4 mi away

    59/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.7★ from 30 Google reviews, listed on Google as “Air conditioning contractor”.

    • 4.7★ from 30 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    109 Defense Hwy, Annapolis, MD 21401
    View profile for B&B Co. Inc.(410) 266-7900

Top 50 of 517 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 Londontowne, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26R&R HVAC Solutions595.0★ (220)17 mi
27Beltway Air Conditioning, Heating and Plumbing595.0★ (129)14 mi
28Complete Climate Services LLC595.0★ (786)25 mi
29Environmental Systems Associates594.9★ (658)23 mi
30JJ HEATING & COOLING COMPANY584.8★ (110)13 mi
31Aire Serv of Prince Georges County584.8★ (176)16 mi
32Len The Plumber Heating & Air, LLC584.7★ (15,911)23 mi
33Elite Air Annapolis AC Repair585.0★ (15)4 mi
34Arundel Service Experts584.7★ (472)21 mi
35C&V Home Services Inc584.9★ (114)16 mi
36OP HVAC Solutions585.0★ (21)7 mi
37ROCKY LLC584.6★ (253)17 mi
38Fresh Air Concepts, LLC584.9★ (217)21 mi
39NARFIX HEATING AND AIR CONDITIONING LLC585.0★ (293)24 mi
40Nero's Heating and Air584.9★ (166)20 mi
41United Air Temp584.8★ (146)18 mi
42All-Pro Inc574.5★ (246)17 mi
43Magnolia Plumbing, Heating & Cooling574.4★ (1,519)24 mi
44Reliability Home Services574.7★ (539)24 mi
45At Your Service Heating and Cooling LLC574.6★ (811)25 mi
46F.H. Furr Plumbing, Heating, Air Conditioning & Electrical574.8★ (1,788)17 mi
47One Hour Air Conditioning & Heating® of Gaithersburg574.8★ (302)22 mi
48Sila Heating, Air Conditioning & Plumbing574.9★ (275)23 mi
49GW Air Service574.9★ (270)23 mi
50United Air Temp574.8★ (171)20 mi

How we ranked emergency HVAC contractors in Londontowne

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 Londontowne: questions

Which HVAC contractors in Londontowne are open 24/7?

25 on this list post 24/7 hours, including Staton Heating, Cooling & Plumbing, Bethany Air, Barstow & Sons Heating and Cooling, Grove Heating & Cooling and Belair Engineering and Service Company, Inc..

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

Staton Heating, Cooling & Plumbing is #1, with a CR Score of 65 out of 100 on emergency weights.

How are emergency HVAC contractors in Londontowne 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 Londontowne

  1. October 2026: CR Scores recalculated for 517 hvac contractors serving Londontowne.
  2. October 2026: 3 duplicate listings merged.

More emergency and heating and cooling pages