119 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Charles Town: Techstar Mechanical Services llc., CR Score 65/100; 5.0★ from 452 Google reviews; open 24/7.
Best for emergencies (open 24/7): M.E. Flow, posts 24/7 hours; ranked #2 of 119.
Most-reviewed: M.E. Flow, 3,718 Google reviews at 4.8★, the most of 119 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
119 Charles Town HVAC contractors are ranked here by CR Score, from ten published factors. 49 are open 24/7, 77 open Saturdays and 65 open Sundays, based on posted hours. The median Google rating is 4.8★ across 119 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Techstar Mechanical Services llc. | 65 | 5.0★ (452) | Charles Town | 24/7 | Overall |
| 2 | M.E. Flow | 62 | 4.8★ (3,718) | Leesburg, 22 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Powell's Plumbing & Air | 61 | 4.8★ (1,265) | Winchester, 19 mi away | 24/7 | — |
| 4 | Mountain Valley Home Comfort | 61 | 4.9★ (542) | Winchester, 18 mi away | 24/7 | — |
| 5 | Aire Serv of Martinsburg | 60 | 4.8★ (261) | Martinsburg, 13 mi away | 24/7 | — |
| 6 | Markool Heating Cooling Plumbing | 60 | 4.9★ (547) | Frederick, 21 mi away | 24/7 | — |
| 7 | Wenbrooke Services - Electrical, Plumbing, Heating and Air | 60 | 4.8★ (1,208) | Frederick, 24 mi away | 24/7 | — |
| 8 | Kidwell Home Services | 60 | 4.6★ (31) | Charles Town | 24/7 | — |
| 9 | Small Solutions | 60 | 4.9★ (338) | Winchester, 19 mi away | 24/7 | — |
| 10 | J R's Plumbing | 60 | 4.5★ (38) | Charles Town | 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: 5.0★ from 452 Google reviews, listed on Google as “HVAC contractor”.
Based in Leesburg, 22 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 3,718 Google reviews, the most in Charles Town.
Based in Winchester, 19 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 1,265 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Winchester, 18 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 542 Google reviews, listed on Google as “HVAC contractor”.
Based in Martinsburg, 13 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 261 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 21 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 547 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 24 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 1,208 Google reviews, listed on Google as “HVAC contractor”.
Based in Charles Town
Ranked #8 because of its Google rating and trade focus: 4.6★ from 31 Google reviews, listed on Google as “HVAC contractor”.
Based in Winchester, 19 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 338 Google reviews, listed on Google as “HVAC contractor”.
Based in Charles Town
Ranked #10 because of its Google rating and trade focus: 4.5★ from 38 Google reviews, listed on Google as “Heating contractor”.
Based in Frederick, 21 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 928 Google reviews, listed on Google as “HVAC contractor”.
Based in Charles Town
Ranked #12 because of its Google rating and trade focus: 4.9★ from 40 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 24 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,614 Google reviews, listed on Google as “HVAC contractor”.
Based in Frederick, 25 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 932 Google reviews, listed on Google as “HVAC contractor”.
Based in Hagerstown, 23 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 441 Google reviews, listed on Google as “HVAC contractor”.
Based in Leesburg, 20 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 477 Google reviews, listed on Google as “HVAC contractor”.
Based in Winchester, 19 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Martinsburg, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 48 Google reviews, listed on Google as “HVAC contractor”.
Based in Winchester, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 196 Google reviews, listed on Google as “HVAC contractor”.
Based in Fountainhead-Orchard Hills, 12 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “HVAC contractor”.
Based in Winchester, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 308 Google reviews, listed on Google as “HVAC contractor”.
Based in Winchester, 19 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 255 Google reviews, listed on Google as “HVAC contractor”.
Based in Martinsburg, 16 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 2,110 Google reviews, listed on Google as “HVAC contractor”.
Based in Purcellville, 12 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based in Martinsburg, 10 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 35 Google reviews, listed on Google as “Air conditioning 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 119 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 |
|---|---|---|
| 2 brothers mechanical llc | 14 mi | |
| A-1 Cooling & Refrigeration, Inc. | 5.0★ (8) | 19 mi |
| B G's Services Co Heating A/C | 2.6★ (5) | 25 mi |
| Brick Street Plumbing, Water Heaters, AC & Furnace Repair | 4.6★ (203) | 20 mi |
| BSP Plumbing | 2.8★ (470) | In Charles Town |
| Comfort Cooling Solutions LLC | 5.0★ (1) | 25 mi |
| Hann Electric Inc. | 5.0★ (1) | In Charles Town |
| Heating & Cooling Certified Mechanic LLC | 5.0★ (2) | 16 mi |
| Loudoun Heating & Air Conditioning | 4.3★ (6) | 18 mi |
| McCoy"S Heating & A/C Service | In Charles Town | |
| Mechanical System Improvements | 5.0★ (1) | 17 mi |
| Relax HVAC Inc | 5.0★ (2) | 25 mi |
| Sears Heating and Air Conditioning | 3.0★ (1) | 12 mi |
| Seneff Heating & Air Inc | 5.0★ (2) | 22 mi |
| TB Construction Company LLC. | In Charles Town | |
| Tony's Electrical & Commercial Refrigeration | Food Service Repair | 3.0★ (2) | 11 mi |
| VIP General HVAC Services | 5.0★ (25) | 25 mi |
| Wivell's Heating and Air Conditioning, LLC | 5.0★ (7) | 24 mi |
| Woodlawn Mechanical Contractors | 4.0★ (1) | 20 mi |
| Your Comfort Services, Inc. | 4.3★ (4) | 16 mi |
National price ranges in USD, not adjusted for Charles Town. 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 |
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 119 Charles Town 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 23, 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 Charles Town 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 |