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ContractorsRanked

Best HVAC Contractors in Hillandale, MD (2026)

1,166 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Hillandale: Len The Plumber Heating & Air, LLC, CR Score 92/100; 4.6★ from 8,136 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): GAC Services, posts 24/7 hours; ranked #2 of 1,166.

  3. 8

    Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 1,166 ranked; ranked #8.

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

1,166 Hillandale HVAC contractors are ranked here by CR Score, from 8 published factors. 350 are open 24/7, 777 open Saturdays and 546 open Sundays, based on posted hours. The median Google rating is 4.8★ across 1,166 rated businesses.

Top 10 HVAC contractors in Hillandale at a glance

Top 10 HVAC contractors in Hillandale at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Len The Plumber Heating & Air, LLC924.6★ (8,136)Silver Spring, 3 mi away24/7Overall
2GAC Services924.9★ (6,908)Gaithersburg, 14 mi away24/7Emergencies
3NARFIX HEATING AND AIR CONDITIONING LLC915.0★ (293)Silver Spring, 1 mi away24/7—
4F.H. Furr Plumbing, Heating, Air Conditioning & Electrical914.7★ (5,985)Rockville, 10 mi away24/7—
5United Air Temp914.8★ (1,306)Greenbelt, 6 mi away24/7—
6CroppMetcalfe904.8★ (7,638)Fairfax, 18 mi away24/7—
7Presidential, Inc.904.9★ (1,701)Gaithersburg, 14 mi away24/7—
8Michael & Son Services894.7★ (15,537)Alexandria, 19 mi away24/7Most reviews
9EzGreen Air duct And Dryer Vent Cleaning894.9★ (130)Silver Spring, 1 mi away24/7—
10AZA heating, cooling, plumbing & construction895.0★ (959)Alexandria, 17 mi away24/7—

The 1,166 best HVAC contractors in Hillandale, 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.

  2. #2 GAC Services

    Based in Gaithersburg, 14 mi away

    92/100CR Score

    Ranked #2 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

  5. #5 United Air Temp

    Based in Greenbelt, 6 mi away

    91/100CR Score

    Ranked #5 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

  6. #6 CroppMetcalfe

    Based in Fairfax, 18 mi away

    90/100CR Score

    Ranked #6 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

  11. #11 John C. Flood

    Based in Alexandria, 19 mi away

    89/100CR Score

    Ranked #11 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

  23. #23 United Air Temp

    Based in Fort Washington, 15 mi away

    89/100CR Score

    Ranked #23 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

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 1,166 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Hillandale, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Cycle Heating and Cooling, LLC884.9★ (77)3 mi
27Cardinal Plumbing Heating & Air Inc884.9★ (2,958)24 mi
28Meade's Heating and Air885.0★ (1,428)23 mi
29Staton Heating, Cooling & Plumbing884.9★ (2,904)24 mi
30Caffi Services884.9★ (508)15 mi
31Nero's Heating and Air884.9★ (166)9 mi
32Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical874.8★ (4,514)24 mi
33Cool Breeze Plumbing, Heating & A/C874.8★ (666)14 mi
34Su' Coy Heating, AC & Duct Cleaning874.9★ (205)11 mi
35Zapata’s HVAC Systems874.9★ (107)2 mi
36Shemtov Systems Heating & Air Conditioning874.9★ (57)3 mi
37AMS Air Conditioning & Heating874.9★ (116)8 mi
38C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC874.9★ (966)20 mi
39Magnolia Plumbing, Heating & Cooling874.4★ (1,519)5 mi
40Sweet Spot Home Services875.0★ (379)6 mi
41AG Services – Electrical, Air Conditioning, Heating & Plumbing874.9★ (440)16 mi
42Service Force Plumbing874.9★ (374)3 mi
43ARS / Rescue Rooter874.4★ (3,510)11 mi
44C&V Home Services Inc874.9★ (114)8 mi
45Metro Services HVAC874.9★ (298)14 mi
46Nelson's HVAC, LLC874.9★ (627)19 mi
47United Air Temp874.8★ (1,318)19 mi
48EzGreen Air Duct And Dryer Vent Cleaning874.9★ (90)7 mi
49Michael & Son Services874.9★ (1,501)24 mi
50USA HVAC Services875.0★ (179)15 mi

Also serving Hillandale

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 Hillandale
BusinessGoogle ratingDistance
A-Gas Rapid Recovery - Baltimore5.0★ (2)9 mi
Barivo HVAC Repair Washington5.0★ (2)9 mi
Bill Myers Inc4.5★ (2)7 mi
Conrod's Plumbing Heating and A/C5.0★ (2)3 mi
Cora AC5.0★ (2)9 mi
Coreno HVAC Repair Washington5.0★ (2)9 mi
DMV Mechanical3.0★ (2)3 mi
Energy Systems Inc3.0★ (2)2 mi
F.H. Furr Plumbing, Heating, Air Conditioning & Electrical4.7★ (4,469)24 mi
Heravo HVAC Repair Washington5.0★ (2)9 mi
Home Services at The Home Depot3.0★ (2)9 mi
JC & JC HVAC4.7★ (503)5 mi
JDL HVAC & Plumbing Services4.8★ (678)8 mi
One Call Services5.0★ (2)9 mi
Owens & Johnsons Heating and Cooling3.0★ (2)7 mi
R And R Climate Control Inc5.0★ (2)2 mi
R D Springer Plumbing & Heating5.0★ (2)1 mi
T & T Plumbing And Heating5.0★ (2)6 mi
Teravo HVAC Repair Washington5.0★ (2)9 mi
Vito Services4.7★ (1,351)10 mi

How much do HVAC contractors cost in Hillandale?

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

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

We scored 1,166 Hillandale 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 Hillandale 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 Hillandale: frequently asked questions

Who is the best HVAC contractor in Hillandale?

By CR Score, the highest-ranked HVAC contractor in Hillandale, MD is Len The Plumber Heating & Air, LLC with a CR Score of 92/100. It has 4.6★ from 8,136 Google reviews. It is open 24/7. GAC Services (#2) and NARFIX HEATING AND AIR CONDITIONING LLC (#3) follow. We ranked 1,166 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Hillandale?

ContractorsRanked ranks 1,166 HVAC contractors serving Hillandale, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Hillandale are open 24/7?

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

Which HVAC contractors in Hillandale work on weekends?

777 of 1,166 ranked HVAC contractors post Saturday hours and 546 post Sunday hours. The highest-ranked open Saturdays are Len The Plumber Heating & Air, LLC (#1), GAC Services (#2) and NARFIX HEATING AND AIR CONDITIONING LLC (#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 Hillandale?

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

What Google rating do Hillandale HVAC contractors have?

The median Google rating among 1,166 rated HVAC contractors in Hillandale is 4.8★, with a median of 21 reviews. Michael & Son Services has the most, 15,537 reviews, and ranks #8. 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 Hillandale?

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 Hillandale

  1. October 2026: CR Scores recalculated for 1,166 hvac contractors serving Hillandale.
  2. October 2026: 11 duplicate listings merged.

More HVAC contractors and Hillandale pages

Other trades in Hillandale