1,080 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Calverton: Len The Plumber Heating & Air, LLC, CR Score 64/100; 4.6★ from 8,136 Google reviews; open 24/7.
Best for emergencies (open 24/7): GAC Services, posts 24/7 hours; ranked #2 of 1,080.
Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 1,080 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,080 Calverton HVAC contractors are ranked here by CR Score, from ten published factors. 331 are open 24/7, 710 open Saturdays and 499 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,080 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Len The Plumber Heating & Air, LLC | 64 | 4.6★ (8,136) | Silver Spring, 5 mi away | 24/7 | Overall |
| 2 | GAC Services | 64 | 4.9★ (6,908) | Gaithersburg, 14 mi away | 24/7 | Emergencies |
| 3 | F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 63 | 4.7★ (5,985) | Rockville, 11 mi away | 24/7 | — |
| 4 | United Air Temp | 63 | 4.8★ (1,306) | Greenbelt, 6 mi away | 24/7 | — |
| 5 | Michael & Son Services | 63 | 4.8★ (8,326) | Hyattsville, 9 mi away | Sat · Sun | — |
| 6 | NARFIX HEATING AND AIR CONDITIONING LLC | 62 | 5.0★ (293) | Silver Spring, 4 mi away | 24/7 | — |
| 7 | Environmental Systems Associates | 62 | 4.9★ (658) | Columbia, 9 mi away | 24/7 | — |
| 8 | Presidential, Inc. | 62 | 4.9★ (1,701) | Gaithersburg, 15 mi away | 24/7 | — |
| 9 | CroppMetcalfe | 61 | 4.8★ (7,638) | Fairfax, 21 mi away | 24/7 | — |
| 10 | Michael & Son Services | 61 | 4.7★ (15,537) | Alexandria, 22 mi away | 24/7 | Most reviews |
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: 4.6★ from 8,136 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 14 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 Rockville, 11 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 5,985 Google reviews, listed on Google as “HVAC contractor”.
Based in Greenbelt, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 1,306 Google reviews, listed on Google as “HVAC contractor”.
Based in Hyattsville, 9 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 8,326 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 4 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 293 Google reviews, listed on Google as “HVAC contractor”.
Based in Columbia, 9 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 658 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 15 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 1,701 Google reviews, listed on Google as “HVAC contractor”.
Based in Fairfax, 21 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 7,638 Google reviews, listed on Google as “HVAC contractor”.
Based in Alexandria, 22 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 15,537 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 15 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 2,083 Google reviews, listed on Google as “HVAC contractor”.
Based in Laurel, 8 mi away
Ranked #12 because of its Google rating and trade focus: 4.4★ from 3,510 Google reviews, listed on Google as “HVAC contractor”.
Based in Crofton, 14 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,156 Google reviews, listed on Google as “HVAC contractor”.
Based in Gaithersburg, 14 mi away
Ranked #14 because of its Google rating and trade focus: 4.8★ from 1,700 Google reviews, listed on Google as “HVAC contractor”.
Based in Rockville, 11 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 1,402 Google reviews, listed on Google as “HVAC contractor”.
Based in Greater Upper Marlboro, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 1,421 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 2 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 107 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 4 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 130 Google reviews, listed on Google as “HVAC contractor”.
Based in Laurel, 5 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 678 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 21 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 4,514 Google reviews, listed on Google as “HVAC contractor”.
Based in Alexandria, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 4,976 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 7 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 299 Google reviews, listed on Google as “HVAC contractor”.
Based in Silver Spring, 7 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 291 Google reviews, listed on Google as “HVAC contractor”.
Based in Fort Washington, 17 mi away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 1,775 Google reviews, listed on Google as “HVAC contractor”.
Based in Greater Upper Marlboro, 7 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 379 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 1,080 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-Gas Rapid Recovery - Baltimore | 5.0★ (2) | 6 mi |
| Bill Myers Inc | 4.5★ (2) | 4 mi |
| ClimateCare HVAC Services, LLC. | 4.9★ (221) | 13 mi |
| Conrod's Plumbing Heating and A/C | 5.0★ (2) | 6 mi |
| Davis Plumbing & Heating Inc | 5.0★ (2) | 10 mi |
| Davis Plumbing & Heating Inc | 5.0★ (2) | 10 mi |
| DMV Mechanical | 3.0★ (2) | 6 mi |
| Energy Systems Inc | 3.0★ (2) | 2 mi |
| Heravo HVAC Repair Washington | 5.0★ (2) | 12 mi |
| JC & JC HVAC | 4.7★ (503) | 4 mi |
| Meleney Equipment Inc | 5.0★ (2) | 9 mi |
| One Call Services | 5.0★ (2) | 7 mi |
| R And R Climate Control Inc | 5.0★ (2) | 5 mi |
| R D Springer Plumbing & Heating | 5.0★ (2) | 3 mi |
| RELIABLE HVAC CERTIFIED LLC | 4.6★ (59) | 3 mi |
| S.L. Johnson Plumbing & Heating | 3.0★ (2) | 12 mi |
| Su' Coy Heating, AC & Duct Cleaning | 4.9★ (205) | 13 mi |
| T & T Plumbing And Heating | 5.0★ (2) | 7 mi |
| United Air Temp | 4.8★ (171) | 10 mi |
| Vito Services | 4.7★ (1,351) | 11 mi |
National price ranges in USD, not adjusted for Calverton. 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 Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors licenses Heating, ventilation, air conditioning and refrigeration work.
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 1,080 Calverton 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 Calverton 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 |