Skip to content
ContractorsRanked

Best HVAC Contractors in Poolesville, MD (2026)

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

The short answer

  1. 1

    Best overall in Poolesville: GAC Services, CR Score 93/100; 4.9★ from 6,908 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Meade's Heating and Air, posts 24/7 hours; ranked #2 of 645.

  3. 34

    Most-reviewed: Len The Plumber Heating & Air, LLC, 8,136 Google reviews at 4.6★, the most of 645 ranked; ranked #34.

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

645 Poolesville HVAC contractors are ranked here by CR Score, from 8 published factors. 191 are open 24/7, 443 open Saturdays and 312 open Sundays, based on posted hours. The median Google rating is 4.9★ across 645 rated businesses.

Top 10 HVAC contractors in Poolesville at a glance

Top 10 HVAC contractors in Poolesville at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1GAC Services934.9★ (6,908)Gaithersburg, 13 mi away24/7Overall
2Meade's Heating and Air925.0★ (1,428)Sterling, 9 mi away24/7Emergencies
3M.E. Flow924.8★ (3,718)Leesburg, 8 mi away24/7—
4Cardinal Plumbing Heating & Air Inc924.9★ (2,958)Sterling, 11 mi away24/7—
5F.H. Furr Plumbing, Heating, Air Conditioning & Electrical924.8★ (2,314)Ashburn, 7 mi away24/7—
6AllTech Services, Inc924.9★ (2,807)Sterling, 11 mi away24/7—
7Snell Home Services924.8★ (5,283)Sterling, 12 mi away24/7—
8Meade's Heating and Air915.0★ (710)Ashburn, 8 mi away24/7—
9Michael & Son Services914.9★ (1,501)Sterling, 9 mi away24/7—
10John Nugent & Sons914.8★ (1,701)Sterling, 9 mi away24/7—

The 645 best HVAC contractors in Poolesville, 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 Poolesville

    #1 GAC Services

    Based in Gaithersburg, 13 mi away

    93/100CR Score

    Ranked #1 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

  3. #3 M.E. Flow

    Based in Leesburg, 8 mi away

    92/100CR Score

    Ranked #3 because of its Google rating and availability: 4.8★ from 3,718 Google reviews, open 24/7.

    • 4.8★ from 3,718 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    12 Cardinal Park Dr SE STE 107, Leesburg, VA 20175
    View profile for M.E. Flow(571) 322-8847

  11. #11 United Air Temp

    Based in Sterling, 11 mi away

    91/100CR Score

    Ranked #11 because of its Google rating and availability: 4.8★ from 2,161 Google reviews, open 24/7.

    • 4.8★ from 2,161 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    45570 Shepard Dr Ste. #6, Sterling, VA 20164
    View profile for United Air Temp(571) 888-8078

  12. #12 Presidential, Inc.

    Based in Gaithersburg, 14 mi away

    90/100CR Score

    Ranked #12 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

  17. #17 CroppMetcalfe

    Based in Fairfax, 21 mi away

    90/100CR Score

    Ranked #17 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

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

HVAC contractors in Poolesville, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Premier HVAC LLC885.0★ (230)13 mi
27Cool Breeze Plumbing, Heating & A/C884.8★ (666)14 mi
28Metro Services HVAC884.9★ (298)12 mi
29Vernon The Heating & Cooling Specialist884.8★ (837)15 mi
30Markool Heating Cooling Plumbing884.9★ (547)17 mi
31Cyprus Air Heating, Cooling and Fireplaces884.7★ (1,402)16 mi
32Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical884.8★ (932)17 mi
33Cube Heating & Cooling885.0★ (96)10 mi
34Len The Plumber Heating & Air, LLC874.6★ (8,136)23 mi
35Tempro Heating and Air875.0★ (477)8 mi
36Nelson's HVAC, LLC874.9★ (627)20 mi
37United Air Temp874.7★ (928)17 mi
38Urbana HVAC875.0★ (182)17 mi
39Smock Heating & Air875.0★ (1,623)17 mi
40Dave's Heating & Air Conditioning874.8★ (138)11 mi
41R A Dobson Inc874.8★ (164)11 mi
42Michael & Son Services874.8★ (993)22 mi
43P&Y Heating and Cooling875.0★ (85)13 mi
44911Air-Care875.0★ (81)12 mi
45Sultan Comfort Solutions875.0★ (147)17 mi
46Warner Service874.8★ (537)19 mi
47Tuckers Air Conditioning, Heating & Plumbing874.9★ (1,614)15 mi
48Frederick Air Inc864.8★ (414)18 mi
49Clarksburg Heating864.9★ (60)12 mi
50Mario Bro, LLC865.0★ (53)13 mi

Also serving Poolesville

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 Poolesville
BusinessGoogle ratingDistance
A Blessing Mechanical, LLC5.0★ (2)10 mi
Airtron Heating and Air Conditioning3.0★ (2)18 mi
changepro USA1.0★ (2)14 mi
Fairfax Cooling & Heating Company4.7★ (106)11 mi
Green HVAC Services5.0★ (2)6 mi
H & M HVAC General Construction Inc.5.0★ (2)14 mi
Heating Air Conditioning Repair5.0★ (2)13 mi
Home Services at The Home Depot1.0★ (2)8 mi
Home Services at The Home Depot3.5★ (2)10 mi
HVAC Heroes of Ashburn Co.5.0★ (2)13 mi
One Hour Air Conditioning & Heating® of Mount Airy4.7★ (852)21 mi
P W Scholl Plumbing & Heating Inc5.0★ (2)12 mi
Relax HVAC Inc5.0★ (2)9 mi
Rockville Heating & Air Services5.0★ (2)13 mi
S.L. Johnson Plumbing & Heating3.0★ (2)15 mi
Sears Heating and Air Conditioning3.0★ (2)12 mi
Seneff Heating & Air Inc5.0★ (2)8 mi
Tri-State Masters5.0★ (2)17 mi
Vito Services4.7★ (1,351)15 mi
Wyant Service Experts4.8★ (165)15 mi

How much do HVAC contractors cost in Poolesville?

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

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

We scored 645 Poolesville 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 Poolesville 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 Poolesville: frequently asked questions

Who is the best HVAC contractor in Poolesville?

By CR Score, the highest-ranked HVAC contractor in Poolesville, MD is GAC Services with a CR Score of 93/100. It has 4.9★ from 6,908 Google reviews. It is open 24/7. Meade's Heating and Air (#2) and M.E. Flow (#3) follow. We ranked 645 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Poolesville?

ContractorsRanked ranks 645 HVAC contractors serving Poolesville, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Poolesville are open 24/7?

191 ranked HVAC contractors in Poolesville post 24/7 hours. The highest-ranked are GAC Services (#1), Meade's Heating and Air (#2) and M.E. Flow (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Poolesville work on weekends?

443 of 645 ranked HVAC contractors post Saturday hours and 312 post Sunday hours. The highest-ranked open Saturdays are GAC Services (#1), Meade's Heating and Air (#2) and M.E. Flow (#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 Poolesville?

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

What Google rating do Poolesville HVAC contractors have?

The median Google rating among 645 rated HVAC contractors in Poolesville is 4.9★, with a median of 27 reviews. Len The Plumber Heating & Air, LLC has the most, 8,136 reviews, and ranks #34. 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 Poolesville?

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 Poolesville

  1. October 2026: CR Scores recalculated for 645 hvac contractors serving Poolesville.
  2. October 2026: 3 duplicate listings merged.

More HVAC contractors and Poolesville pages

Other trades in Poolesville