1,082 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Great Falls: CroppMetcalfe, CR Score 64/100; 4.8★ from 7,638 Google reviews; open 24/7.
Best for emergencies (open 24/7): GAC Services, posts 24/7 hours; ranked #2 of 1,082.
Most-reviewed: F.H. Furr Plumbing, Heating, Air Conditioning & Electrical, 17,172 Google reviews at 4.8★, the most of 1,082 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,082 Great Falls HVAC contractors are ranked here by CR Score, from ten published factors. 346 are open 24/7, 750 open Saturdays and 516 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,082 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | CroppMetcalfe | 64 | 4.8★ (7,638) | Fairfax, 9 mi away | 24/7 | Overall |
| 2 | GAC Services | 64 | 4.9★ (6,908) | Gaithersburg, 11 mi away | 24/7 | Emergencies |
| 3 | Cardinal Plumbing Heating & Air Inc | 64 | 4.9★ (2,958) | Sterling, 7 mi away | 24/7 | — |
| 4 | Meade's Heating and Air | 64 | 5.0★ (1,428) | Sterling, 7 mi away | 24/7 | — |
| 5 | Snell Home Services | 64 | 4.8★ (5,283) | Sterling, 9 mi away | 24/7 | — |
| 6 | AllTech Services, Inc | 64 | 4.9★ (2,807) | Sterling, 8 mi away | 24/7 | — |
| 7 | Michael & Son Services | 63 | 4.9★ (1,501) | Sterling, 7 mi away | 24/7 | — |
| 8 | OHA HVAC, Plumbing, Chimney & Fireplaces | 63 | 4.9★ (1,794) | Fairfax, 9 mi away | 24/7 | — |
| 9 | United Air Temp | 63 | 4.8★ (2,161) | Sterling, 7 mi away | 24/7 | — |
| 10 | F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 63 | 4.7★ (5,985) | Rockville, 11 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 7,638 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 6,908 Google reviews, listed on Google as “Heating contractor”.
Based in Sterling, 7 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 2,958 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 1,428 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 9 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 5,283 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 8 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 2,807 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,501 Google reviews, listed on Google as “HVAC contractor”.
Based in Fairfax, 9 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,794 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 2,161 Google reviews, listed on Google as “HVAC contractor”.
Based in Rockville, 11 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 5,985 Google reviews, listed on Google as “HVAC contractor”.
Based in Alexandria, 15 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 15,537 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.
Based in Herndon, 6 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 745 Google reviews, listed on Google as “HVAC contractor”.
Based in Ashburn, 10 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 2,314 Google reviews, listed on Google as “HVAC contractor”.
Based in Manassas, 21 mi away
Ranked #15 because of its Google rating and review volume: 4.8★ from 17,172 Google reviews, the most in Great Falls.
Based in Alexandria, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 4,976 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 357 Google reviews, listed on Google as “HVAC contractor”.
Based in Ashburn, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 710 Google reviews, listed on Google as “HVAC contractor”.
Based in Vienna, 8 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 627 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 15 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 8,136 Google reviews, listed on Google as “HVAC contractor”.
Based in Leesburg, 15 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 3,718 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.
Based in Sterling, 7 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 440 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 14 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 2,083 Google reviews, listed on Google as “HVAC contractor”.
Based in Herndon, 6 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 230 Google reviews, listed on Google as “HVAC contractor”.
#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 1,082 ranked HVAC contractors here; the rest are on their profiles.
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.
| Business | Google rating | Distance |
|---|---|---|
| A Blessing Mechanical, LLC | 5.0★ (2) | 8 mi |
| ARS / Rescue Rooter | 4.5★ (5,934) | 19 mi |
| changepro USA | 1.0★ (2) | 5 mi |
| DOHVAC | In Great Falls | |
| Fairfax Cooling & Heating Company | 4.7★ (106) | 4 mi |
| Green HVAC Services | 5.0★ (2) | 8 mi |
| H & M HVAC General Construction Inc. | 5.0★ (2) | 5 mi |
| Heating Air Conditioning Repair | 5.0★ (2) | 10 mi |
| K&Y HVAC SERVICES LLC. | 1.0★ (1) | In Great Falls |
| PCCE, Inc | In Great Falls | |
| Precision Air Inc | 5.0★ (2) | 9 mi |
| Rockville Heating & Air Services | 5.0★ (2) | 10 mi |
| S-E HVAC LLC | In Great Falls | |
| S.L. Johnson Plumbing & Heating | 3.0★ (2) | 10 mi |
| Sears Heating and Air Conditioning | 3.0★ (2) | 5 mi |
| Tri-State Masters | 5.0★ (2) | 4 mi |
| Tulip Carpet Cleaning of Reston | 4.7★ (177) | In Great Falls |
| Vito Services | 4.7★ (1,351) | 11 mi |
| WEON Mechanical LC | 5.0★ (1) | In Great Falls |
| xaltevahvac solution | In Great Falls |
National price ranges in USD, not adjusted for Great Falls. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In Virginia, Virginia Board for Contractors (DPOR) licenses Contractor license with an HVAC specialty; HVAC technicians hold tradesman licenses.
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
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.
We scored 1,082 Great Falls HVAC contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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.
| Factor | Weight | Computed from | In Great Falls data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |