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ContractorsRanked

Best HVAC Contractors in Fairfax, VA (2026)

1,083 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Fairfax: CroppMetcalfe, CR Score 94/100; 4.8★ from 7,638 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): OHA HVAC, Plumbing, Chimney & Fireplaces, posts 24/7 hours; ranked #2 of 1,083.

  3. 4

    Most-reviewed: F.H. Furr Plumbing, Heating, Air Conditioning & Electrical, 17,172 Google reviews at 4.8★, the most of 1,083 ranked; ranked #4.

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

1,083 Fairfax HVAC contractors are ranked here by CR Score, from 8 published factors. 339 are open 24/7, 766 open Saturdays and 529 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,083 rated businesses.

Top 10 HVAC contractors in Fairfax at a glance

Top 10 HVAC contractors in Fairfax at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1CroppMetcalfe944.8★ (7,638)Fairfax24/7Overall
2OHA HVAC, Plumbing, Chimney & Fireplaces934.9★ (1,794)Fairfax24/7Emergencies
3Michael & Son Services924.7★ (15,537)Alexandria, 8 mi away24/7—
4F.H. Furr Plumbing, Heating, Air Conditioning & Electrical924.8★ (17,172)Manassas, 14 mi away24/7Most reviews
5John C. Flood924.8★ (4,976)Alexandria, 9 mi away24/7—
6Reddick & Sons, Inc915.0★ (3,027)Manassas, 14 mi away24/7—
7C.D. Shanahan's HVAC, Plumbing, Electrical & Remodeling LLC914.9★ (966)Springfield, 5 mi away24/7—
8Cardinal Plumbing Heating & Air Inc914.9★ (2,958)Sterling, 12 mi away24/7—
9Nelson's HVAC, LLC914.9★ (627)Vienna, 3 mi away24/7—
10AZA heating, cooling, plumbing & construction915.0★ (959)Alexandria, 9 mi away24/7—

The 1,083 best HVAC contractors in Fairfax, 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 Fairfax

    #1 CroppMetcalfe

    Based in Fairfax

    94/100CR Score

    Ranked #1 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

  5. #5 John C. Flood

    Based in Alexandria, 9 mi away

    92/100CR Score

    Ranked #5 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

  18. #18 Zone Control

    Based in Fairfax

    90/100CR Score

    Ranked #18 because of its Google rating and availability: 5.0★ from 104 Google reviews, open 24/7.

    • 5.0★ from 104 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10304 Eaton Pl Suite 100, Fairfax, VA 22030
    View profile for Zone Control(703) 420-0545

  20. #20 GAC Services

    Based in Gaithersburg, 21 mi away

    90/100CR Score

    Ranked #20 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

  21. #21 United Air Temp

    Based in Sterling, 12 mi away

    90/100CR Score

    Ranked #21 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

  25. #25 United Air Temp

    Based in Alexandria, 10 mi away

    89/100CR Score

    Ranked #25 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

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 1,083 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Fairfax, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26McDaniel Service, Inc894.9★ (770)11 mi
27Leonard Splaine Co.894.9★ (1,060)13 mi
28SwiftPro Heating, Cooling & Plumbing895.0★ (534)In Fairfax
29AVS Heating and Air Conditioning894.8★ (149)In Fairfax
30John Nugent & Sons894.8★ (1,701)13 mi
31McCarthy Services894.8★ (335)5 mi
32United Air Temp894.9★ (313)7 mi
33ARS / Rescue Rooter894.5★ (5,934)10 mi
34B&B Air Conditioning & Heating Service895.0★ (357)12 mi
35Commonwealth Cooling & Heating, LLC894.9★ (507)11 mi
36Cyprus Air Heating, Air Conditioning and Fireplaces894.8★ (908)11 mi
37M.E. Flow894.8★ (866)11 mi
38Michael Bonsby HVAC, Plumbing and Electrical894.8★ (2,138)15 mi
39Premier HVAC LLC895.0★ (230)10 mi
40Pro Sky Services895.0★ (484)14 mi
41AA RAPID Plumbing, Air Conditioning, Heating LLC884.7★ (174)In Fairfax
42Meade's Heating and Air885.0★ (710)17 mi
43HVAC DONE EZ LLC885.0★ (272)11 mi
44United Air Temp884.7★ (1,754)12 mi
45F.H. Furr Plumbing, Heating, Air Conditioning & Electrical884.8★ (2,314)17 mi
46M.E. Flow884.7★ (1,169)10 mi
47Sultan Comfort Solutions885.0★ (147)8 mi
48Air Treatment Heating & Cooling885.0★ (657)5 mi
49AG Services – Electrical, Air Conditioning, Heating & Plumbing884.9★ (440)12 mi
50Express Tech Air885.0★ (213)11 mi

Also serving Fairfax

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 Fairfax
BusinessGoogle ratingDistance
1 Source Refrigeration & HVACIn Fairfax
AC,Heat & Ductwork by DOB Inc.In Fairfax
Air Max HVACR5.0★ (2)5 mi
AJ Heating and AC, Inc.5.0★ (2)5 mi
Atlas services5.0★ (1)In Fairfax
Capitol Metro Contracting5.0★ (25)In Fairfax
Geothermal Options LLCIn Fairfax
Heating Air Conditioning Repair5.0★ (2)In Fairfax
Home Services at The Home Depot5.0★ (2)In Fairfax
Lee's Heating & Air5.0★ (1)In Fairfax
McCarthy Services4.4★ (3,547)9 mi
My Air Comfort, Heating and CoolingIn Fairfax
North American GeoThermal4.6★ (72)In Fairfax
Parrish Services4.8★ (1,816)15 mi
Power, LLC5.0★ (2)5 mi
Precision Air Inc5.0★ (2)In Fairfax
Sj Plumbing And Mechanical Building Services Llc5.0★ (1)In Fairfax
The Home Depot4.1★ (1,660)In Fairfax
United Air Temp4.7★ (124)In Fairfax
United Air Temp4.4★ (4,301)10 mi

How much do HVAC contractors cost in Fairfax?

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

How much do HVAC contractors cost in Fairfax?
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 Virginia

In Virginia, Virginia Board for Contractors (DPOR) licenses Contractor license with an HVAC specialty; HVAC technicians hold tradesman licenses.

  1. Search the business name or license number on the Virginia Board for Contractors (DPOR) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. 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 Virginia

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 Fairfax HVAC contractors

We scored 1,083 Fairfax 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 Fairfax 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 Fairfax: frequently asked questions

Who is the best HVAC contractor in Fairfax?

By CR Score, the highest-ranked HVAC contractor in Fairfax, VA is CroppMetcalfe with a CR Score of 94/100. It has 4.8★ from 7,638 Google reviews. It is open 24/7. OHA HVAC, Plumbing, Chimney & Fireplaces (#2) and Michael & Son Services (#3) follow. We ranked 1,083 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Fairfax?

ContractorsRanked ranks 1,083 HVAC contractors serving Fairfax, VA. 8 of them are based in Fairfax; 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 Fairfax are open 24/7?

339 ranked HVAC contractors in Fairfax post 24/7 hours. The highest-ranked are CroppMetcalfe (#1), OHA HVAC, Plumbing, Chimney & Fireplaces (#2) and Michael & Son Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Fairfax work on weekends?

766 of 1,083 ranked HVAC contractors post Saturday hours and 529 post Sunday hours. The highest-ranked open Saturdays are CroppMetcalfe (#1), OHA HVAC, Plumbing, Chimney & Fireplaces (#2) and Michael & Son Services (#3). Posted hours are office hours; crews may book weekend jobs separately.

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

In Virginia, Virginia Board for Contractors (DPOR) handles licensing and covers Contractor license with an HVAC specialty; HVAC technicians hold tradesman licenses. Search the business or license number at https://www.dpor.virginia.gov/LicenseLookup.

How much does ac replacement cost in Fairfax?

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

What Google rating do Fairfax HVAC contractors have?

The median Google rating among 1,083 rated HVAC contractors in Fairfax is 4.9★, with a median of 23 reviews. F.H. Furr Plumbing, Heating, Air Conditioning & Electrical has the most, 17,172 reviews, and ranks #4. 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 Fairfax?

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 Fairfax

  1. October 2026: CR Scores recalculated for 1,083 hvac contractors serving Fairfax.
  2. October 2026: 10 duplicate listings merged.

More HVAC contractors and Fairfax pages

Other trades in Fairfax