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ContractorsRanked

Best HVAC Contractors in Greenbelt, MD (2026)

1,082 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Greenbelt: United Air Temp, CR Score 92/100; 4.8★ from 1,306 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Len The Plumber Heating & Air, LLC, posts 24/7 hours; ranked #2 of 1,082.

  3. 11

    Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 1,082 ranked; ranked #11.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

1,082 Greenbelt HVAC contractors are ranked here by CR Score, from 8 published factors. 314 are open 24/7, 710 open Saturdays and 501 open Sundays, based on posted hours. The median Google rating is 4.8★ across 1,082 rated businesses.

Top 10 HVAC contractors in Greenbelt at a glance

Top 10 HVAC contractors in Greenbelt at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1United Air Temp924.8★ (1,306)Greenbelt24/7Overall
2Len The Plumber Heating & Air, LLC914.6★ (8,136)Silver Spring, 8 mi away24/7Emergencies
3GAC Services904.9★ (6,908)Gaithersburg, 19 mi away24/7—
4Grove Heating & Cooling904.9★ (1,156)Crofton, 10 mi away24/7—
5Belair Engineering and Service Company, Inc.904.9★ (1,421)Greater Upper Marlboro, 11 mi away24/7—
6NARFIX HEATING AND AIR CONDITIONING LLC905.0★ (293)Silver Spring, 6 mi away24/7—
7Michael & Son Services904.8★ (8,326)Hyattsville, 5 mi awaySat · Sun—
8F.H. Furr Plumbing, Heating, Air Conditioning & Electrical894.7★ (5,985)Rockville, 15 mi away24/7—
9Staton Heating, Cooling & Plumbing894.9★ (2,904)Annapolis, 19 mi away24/7—
10Environmental Systems Associates894.9★ (658)Columbia, 12 mi away24/7—

The 1,082 best HVAC contractors in Greenbelt, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Greenbelt

    #1 United Air Temp

    Based in Greenbelt

    92/100CR Score

    Ranked #1 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, 19 mi away

    90/100CR 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

  12. #12 CroppMetcalfe

    Based in Fairfax, 21 mi away

    89/100CR Score

    Ranked #12 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

  13. #13 United Air Temp

    Based in Fort Washington, 14 mi away

    89/100CR Score

    Ranked #13 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

  16. #16 John C. Flood

    Based in Alexandria, 21 mi away

    88/100CR Score

    Ranked #16 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

  19. #19 Presidential, Inc.

    Based in Gaithersburg, 19 mi away

    88/100CR Score

    Ranked #19 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

HVAC contractors ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 1,082 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Greenbelt, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical884.8★ (4,514)23 mi
27Michael Bonsby HVAC, Plumbing & Electrical884.8★ (2,083)19 mi
28ARS / Rescue Rooter874.4★ (3,510)9 mi
29Boothe's Heating, Air, Plumbing, Drains & Electrical874.9★ (1,461)21 mi
30Thomas E Clark Inc874.8★ (299)10 mi
31Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical874.8★ (291)9 mi
32Aire Serv of Prince Georges County874.8★ (176)7 mi
33Caffi Services874.9★ (508)16 mi
34Parker Pearce Service Experts874.8★ (1,700)19 mi
35Sweet Spot Home Services875.0★ (379)5 mi
36Bethany Air874.8★ (1,251)18 mi
37Cyprus Air Heating, Cooling and Fireplaces874.7★ (1,402)15 mi
38Su' Coy Heating, AC & Duct Cleaning874.9★ (205)11 mi
39Cycle Heating and Cooling, LLC874.9★ (77)7 mi
40Len The Plumber Heating & Air, LLC874.8★ (1,053)4 mi
41Michael & Son Services874.7★ (419)11 mi
42AG Services – Electrical, Air Conditioning, Heating & Plumbing874.9★ (440)18 mi
43Magnolia Plumbing, Heating & Cooling874.4★ (1,519)8 mi
44David E White's Plumbing, Heating & Repair Company875.0★ (238)17 mi
45Complete Climate Services LLC865.0★ (786)25 mi
46JV heating and air services864.8★ (114)8 mi
47United Air Temp864.8★ (1,318)21 mi
48C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC864.9★ (966)23 mi
49Beltway Air Conditioning, Heating & Plumbing864.9★ (2,167)15 mi
50JDL HVAC & Plumbing Services864.8★ (678)6 mi

Also serving Greenbelt

20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked HVAC contractors serving Greenbelt
BusinessGoogle ratingDistance
A-Gas Rapid Recovery - Baltimore5.0★ (2)6 mi
Ambient LLC4.8★ (336)15 mi
Bill Myers Inc4.5★ (2)7 mi
Conrod's Plumbing Heating and A/C5.0★ (2)8 mi
Cora AC5.0★ (2)11 mi
Davis Plumbing & Heating Inc5.0★ (2)5 mi
DC HVAC, Heating and Air Conditioning5.0★ (2)11 mi
DMV Mechanical3.0★ (2)8 mi
Energy Systems Inc3.0★ (2)6 mi
Heravo HVAC Repair Washington5.0★ (2)11 mi
Home Services at The Home Depot3.0★ (2)7 mi
JC & JC HVAC4.7★ (503)9 mi
Meleney Equipment Inc5.0★ (2)10 mi
One Call Services5.0★ (2)4 mi
R And R Climate Control Inc5.0★ (2)5 mi
R D Springer Plumbing & Heating5.0★ (2)5 mi
T & T Plumbing And Heating5.0★ (2)3 mi
United Air Temp4.8★ (171)11 mi
United Service Company5.0★ (2)9 mi
Vito Services4.7★ (1,351)16 mi

How much do HVAC contractors cost in Greenbelt?

National price ranges in USD, not adjusted for Greenbelt. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Greenbelt?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

How to check an HVAC contractor's license in Maryland

In Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors licenses Heating, ventilation, air conditioning and refrigeration work.

  1. Check that the status is active and the name matches the contract or truck.
  2. Ask for proof of insurance before work starts.

No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.

Guide checked October 2026. How we verify licenses

When to hire an HVAC contractor in Maryland

HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.

How we ranked Greenbelt HVAC contractors

We scored 1,082 Greenbelt HVAC contractors on 8 factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. Unknown factors are left out of the score, not counted as zero. Scores last refreshed October 22, 2026.

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 fromIn Greenbelt data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

HVAC contractors in Greenbelt: frequently asked questions

Who is the best HVAC contractor in Greenbelt?

By CR Score, the highest-ranked HVAC contractor in Greenbelt, MD is United Air Temp with a CR Score of 92/100. It has 4.8★ from 1,306 Google reviews. It is open 24/7. Len The Plumber Heating & Air, LLC (#2) and GAC Services (#3) follow. We ranked 1,082 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Greenbelt?

ContractorsRanked ranks 1,082 HVAC contractors serving Greenbelt, MD. 1 of them is based in Greenbelt; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Greenbelt are open 24/7?

314 ranked HVAC contractors in Greenbelt post 24/7 hours. The highest-ranked are United Air Temp (#1), Len The Plumber Heating & Air, LLC (#2) and GAC Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Greenbelt work on weekends?

710 of 1,082 ranked HVAC contractors post Saturday hours and 501 post Sunday hours. The highest-ranked open Saturdays are United Air Temp (#1), Len The Plumber Heating & Air, LLC (#2) and GAC Services (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check an HVAC contractor's license in Maryland?

In Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors handles licensing and covers Heating, ventilation, air conditioning and refrigeration work.

How much does ac replacement cost in Greenbelt?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Greenbelt. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Greenbelt HVAC contractors have?

The median Google rating among 1,082 rated HVAC contractors in Greenbelt is 4.8★, with a median of 20 reviews. Michael & Son Services has the most, 15,537 reviews, and ranks #11. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Greenbelt?

HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.

Update log for Greenbelt

  1. October 2026: CR Scores recalculated for 1,082 hvac contractors serving Greenbelt.
  2. October 2026: 10 duplicate listings merged.

More HVAC contractors and Greenbelt pages

Other trades in Greenbelt