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ContractorsRanked

Best HVAC Contractors in Waldorf, MD (2026)

629 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Waldorf: Mission Comfort, CR Score 93/100; 5.0★ from 625 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): A-Plus Service Experts, posts 24/7 hours; ranked #2 of 629.

  3. 5

    Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 629 ranked; ranked #5.

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

629 Waldorf HVAC contractors are ranked here by CR Score, from 8 published factors. 201 are open 24/7, 431 open Saturdays and 294 open Sundays, based on posted hours. The median Google rating is 4.9★ across 629 rated businesses.

Top 10 HVAC contractors in Waldorf at a glance

Top 10 HVAC contractors in Waldorf at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Mission Comfort935.0★ (625)Waldorf24/7Overall
2A-Plus Service Experts914.8★ (1,234)St. Charles, 2 mi away24/7Emergencies
3Olympic Aire Services Inc914.9★ (426)Accokeek, 2 mi away24/7—
4United Air Temp914.7★ (855)Waldorf24/7—
5Michael & Son Services904.7★ (15,537)Alexandria, 17 mi away24/7Most reviews
6John C. Flood894.8★ (4,976)Alexandria, 17 mi away24/7—
7Fixed Right & Guaranteed Super Techs, LLC895.0★ (1,032)Rosaryville, 17 mi away24/7—
8United Air Temp894.8★ (1,775)Fort Washington, 13 mi away24/7—
9Krafft Service Corporation894.9★ (1,631)Alexandria, 16 mi away24/7—
10AZA heating, cooling, plumbing & construction895.0★ (959)Alexandria, 17 mi away24/7—

The 629 best HVAC contractors in Waldorf, 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 Waldorf

    #1 Mission Comfort

    Based in Waldorf

    93/100CR Score

    Ranked #1 because of its Google rating and availability: 5.0★ from 625 Google reviews, open 24/7.

    • 5.0★ from 625 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    11822 Pika Dr, Waldorf, MD 20602
    View profile for Mission Comfort(301) 450-5913

  4. #4 United Air Temp

    Based in Waldorf

    91/100CR Score

    Ranked #4 because of its Google rating and availability: 4.7★ from 855 Google reviews, open 24/7.

    • 4.7★ from 855 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    605 Post Office Rd Ste 204, Waldorf, MD 20602
    View profile for United Air Temp(240) 359-9217

  5. #5 Michael & Son Services

    Based in Alexandria, 17 mi away

    90/100CR Score

    Ranked #5 because of its Google rating and review volume: 4.7★ from 15,537 Google reviews, the most Google reviews on this list (15,537).

    • 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 John C. Flood

    Based in Alexandria, 17 mi away

    89/100CR Score

    Ranked #6 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

  8. #8 United Air Temp

    Based in Fort Washington, 13 mi away

    89/100CR Score

    Ranked #8 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

  11. #11 HPC Services

    Based in Waldorf

    89/100CR Score

    Ranked #11 because of its Google rating and availability: 4.9★ from 92 Google reviews, open 24/7.

    • 4.9★ from 92 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    14 Irongate Dr Suite F, Waldorf, MD 20602
    View profile for HPC Services(240) 435-7472

  13. #13 CroppMetcalfe

    Based in Fairfax, 24 mi away

    88/100CR Score

    Ranked #13 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

  18. #18 United Air Temp

    Based in Alexandria, 16 mi away

    88/100CR Score

    Ranked #18 because of its Google rating and availability: 4.8★ from 1,318 Google reviews, open 24/7.

    • 4.8★ from 1,318 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6094 Franconia Rd # B, Alexandria, VA 22310
    View profile for United Air Temp(703) 762-2488

  19. #19 Caffi Services

    Based in Alexandria, 15 mi away

    88/100CR Score

    Ranked #19 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

  24. #24 M.E. Flow

    Based in Lorton, 15 mi away

    87/100CR Score

    Ranked #24 because of its Google rating and availability: 4.8★ from 866 Google reviews, open 24/7.

    • 4.8★ from 866 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    7200 Telegraph Square Dr, Lorton, VA 22079
    View profile for M.E. Flow(571) 470-7235

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 629 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Waldorf, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26A Action Home Services874.9★ (326)14 mi
27OHA HVAC, Plumbing, Chimney & Fireplaces874.9★ (1,794)23 mi
28M.E. Flow874.7★ (1,169)16 mi
29United Air Temp874.7★ (1,754)19 mi
30Lawson Air Conditioning Repair865.0★ (36)5 mi
31United Air Temp864.9★ (313)18 mi
32Comfort Solutions864.8★ (298)15 mi
33United Air Temp864.4★ (4,301)15 mi
34KPK Enterprise Heating and Cooling865.0★ (320)10 mi
35Cardinal Plumbing Heating & Air Inc864.9★ (1,720)14 mi
36DR HVAC Inc864.9★ (348)21 mi
37McCarthy Services854.4★ (3,547)16 mi
38Su' Coy Heating, AC & Duct Cleaning854.9★ (205)18 mi
39Michael & Son Services854.8★ (8,326)22 mi
40ACCURATE854.9★ (208)18 mi
41Associates Property Management, Inc.854.9★ (17)3 mi
42Len the Plumber Heating & Air, LLC854.7★ (6,899)16 mi
43SMO Energy854.3★ (945)7 mi
44Nelson's HVAC, LLC854.9★ (627)25 mi
45Alex Hvac Service LLC854.9★ (310)21 mi
46Cyprus Air Heating, Cooling and Fireplaces854.3★ (2,189)12 mi
47United Air Temp854.8★ (146)14 mi
48NFS Heating & A/C Services LLC854.9★ (67)12 mi
49HVAC & Plumbing Unlimited854.9★ (788)16 mi
50Su'Coy854.9★ (58)13 mi

Also serving Waldorf

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 Waldorf
BusinessGoogle ratingDistance
Absolute Supply and Services, LLC4.5★ (2)14 mi
Ace HVAC & Airduct cleaning Conditioning4.5★ (2)6 mi
Airtron Heating & Air Conditioning2.5★ (2)7 mi
Back 2 Basic HVAC LLC5.0★ (2)11 mi
BBG Contracting4.5★ (2)14 mi
DKS Enterprise LLC5.0★ (2)8 mi
DM Select Services5.0★ (2)15 mi
Ead MechanicalIn Waldorf
EDWIN HVAC & CONSTRUCTION LLCIn Waldorf
Hamilton Pacific Chamberlain5.0★ (2)In Waldorf
Horizon Mechanical Services LLC5.0★ (2)15 mi
JM INSULATION LLC5.0★ (2)7 mi
K 2 Ventilations5.0★ (2)2 mi
Logan Mechanical LLC4.7★ (155)11 mi
R&R HVAC Solutions5.0★ (220)17 mi
S&W Controls, Inc.5.0★ (2)15 mi
Sears Heating and Air Conditioning3.0★ (2)In Waldorf
TRINITY PRO SERVICES4.7★ (257)15 mi
Tucker HVAC5.0★ (1)In Waldorf
Ultra Painting HVAC Pros5.0★ (2)14 mi

How much do HVAC contractors cost in Waldorf?

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

How much do HVAC contractors cost in Waldorf?
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 Waldorf HVAC contractors

We scored 629 Waldorf 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 Waldorf 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 Waldorf: frequently asked questions

Who is the best HVAC contractor in Waldorf?

By CR Score, the highest-ranked HVAC contractor in Waldorf, MD is Mission Comfort with a CR Score of 93/100. It has 5.0★ from 625 Google reviews. It is open 24/7. A-Plus Service Experts (#2) and Olympic Aire Services Inc (#3) follow. We ranked 629 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Waldorf?

ContractorsRanked ranks 629 HVAC contractors serving Waldorf, MD. 3 of them are based in Waldorf; 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 Waldorf are open 24/7?

201 ranked HVAC contractors in Waldorf post 24/7 hours. The highest-ranked are Mission Comfort (#1), A-Plus Service Experts (#2) and Olympic Aire Services Inc (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Waldorf work on weekends?

431 of 629 ranked HVAC contractors post Saturday hours and 294 post Sunday hours. The highest-ranked open Saturdays are Mission Comfort (#1), A-Plus Service Experts (#2) and Olympic Aire Services Inc (#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 Waldorf?

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 Waldorf. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Waldorf HVAC contractors have?

The median Google rating among 629 rated HVAC contractors in Waldorf is 4.9★, with a median of 18 reviews. Michael & Son Services has the most, 15,537 reviews, and ranks #5. 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 Waldorf?

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 Waldorf

  1. October 2026: CR Scores recalculated for 629 hvac contractors serving Waldorf.
  2. October 2026: 9 duplicate listings merged.

More HVAC contractors and Waldorf pages

Other trades in Waldorf