Best HVAC companies in Poolesville, MD

The highest-scoring HVAC company in and near Poolesville is GAC Services (score 90, 4.9 stars from 7,927 Google reviews). 6 companies meet the 5 Star standard within about 16 miles.

Last updated Nov 1, 2026How we rank
  1. 1

    GAC Services

    4.9 · 7,927 Google reviewsGaithersburg, MD56 years in business

    GAC Services is a family-owned and operated HVAC, plumbing, and electrical company that has served Maryland since 1970. The company works with residential and commercial customers in Gaithersburg and across Montgomery…

    Emergency serviceFinancing available
    90SCORE
  2. 2

    Metro Services HVAC

    4.9 · 421 Google reviewsGaithersburg, MD7 years in business
    Emergency serviceFinancing available
    76SCORE
  3. 3

    F.H. Furr Plumbing, Heating, Air Conditioning & Electrical

    4.7 · 6,914 Google reviewsRockville, MD
    74SCORE
  4. 4

    Castro Electrical Services

    4.8 · 487 Google reviewsRockville, MD
    73SCORE
  5. 5

    Cyprus Air Heating, Cooling and Fireplaces

    4.7 · 1,596 Google reviewsRockville, MD
    72SCORE
  6. 6

    Vito Services

    4.7 · 1,535 Google reviewsRockville, MD
    72SCORE

We list only companies that clear our published bar, so this area is still filling in. As more HVAC companies near Poolesville qualify, they'll appear here automatically.

Compare the top 6

Top HVAC companies in Poolesville by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1GAC Services904.97,92756Gaithersburg
2Metro Services HVAC764.94217Gaithersburg
3F.H. Furr Plumbing, Heating, Air Conditioning & Electrical744.76,914–Rockville
4Castro Electrical Services734.8487–Rockville
5Cyprus Air Heating, Cooling and Fireplaces724.71,596–Rockville
6Vito Services724.71,535–Rockville

HVAC companies in Poolesville: quick answers

Who is the highest-rated HVAC company in Poolesville, MD?

GAC Services has the highest 5 Star Score among HVAC companies in and near Poolesville: 90 out of 100, with a 4.9 star Google rating from 7,927 reviews.

How many 5 Star HVAC companies serve Poolesville?

6 HVAC companies meet our standard within about 16 miles of Poolesville: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 6 have 18,880 Google reviews between them, averaging 4.78 stars.

How are these HVAC companies ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.