91/100CR Score
Ranked #1 because of its Google rating and availability: 4.8★ from 1,775 Google reviews, open 24/7.
- 4.8★ from 1,775 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5620 St Barnabas Rd Ste 240, Fort Washington, MD 20744
Best HVAC Contractors in District Heights, MD (2026)
983 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in District Heights: United Air Temp, CR Score 91/100; 4.8★ from 1,775 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Belair Engineering and Service Company, Inc., posts 24/7 hours; ranked #2 of 983.
- 3
Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 983 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
983 District Heights HVAC contractors are ranked here by CR Score, from 8 published factors. 302 are open 24/7, 643 open Saturdays and 452 open Sundays, based on posted hours. The median Google rating is 4.9★ across 983 rated businesses.
Top 10 HVAC contractors in District Heights at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | United Air Temp | 91 | 4.8★ (1,775) | Fort Washington, 5 mi away | 24/7 | Overall |
| 2 | Belair Engineering and Service Company, Inc. | 91 | 4.9★ (1,421) | Greater Upper Marlboro, 9 mi away | 24/7 | Emergencies |
| 3 | Michael & Son Services | 90 | 4.7★ (15,537) | Alexandria, 16 mi away | 24/7 | Most reviews |
| 4 | John C. Flood | 90 | 4.8★ (4,976) | Alexandria, 15 mi away | 24/7 | — |
| 5 | AZA heating, cooling, plumbing & construction | 90 | 5.0★ (959) | Alexandria, 14 mi away | 24/7 | — |
| 6 | Michael & Son Services | 90 | 4.8★ (8,326) | Hyattsville, 6 mi away | Sat · Sun | — |
| 7 | Krafft Service Corporation | 90 | 4.9★ (1,631) | Alexandria, 14 mi away | 24/7 | — |
| 8 | United Air Temp | 90 | 4.8★ (1,306) | Greenbelt, 9 mi away | 24/7 | — |
| 9 | CroppMetcalfe | 90 | 4.8★ (7,638) | Fairfax, 19 mi away | 24/7 | — |
| 10 | Caffi Services | 89 | 4.9★ (508) | Alexandria, 9 mi away | 24/7 | — |
The 983 best HVAC contractors in District Heights, 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.
Based in Greater Upper Marlboro, 9 mi away
91/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 1,421 Google reviews, open 24/7.
- 4.9★ from 1,421 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15881 Commerce Ct, Upper Marlboro, MD 20774
Based in Alexandria, 16 mi away
90/100CR ScoreRanked #3 because of its Google rating and review volume: 4.7★ from 15,537 Google reviews, the most Google reviews on this list (15,537).
- 4.7★ from 15,537 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5740 General Washington Dr, Alexandria, VA 22312
Based in Alexandria, 15 mi away
90/100CR ScoreRanked #4 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
Based in Alexandria, 14 mi away
90/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 959 Google reviews, open 24/7.
- 5.0★ from 959 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5800 Quantrell Ave #1510, Alexandria, VA 22312
Based in Hyattsville, 6 mi away
90/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 8,326 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 8,326 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 3400 Sharp St, Hyattsville, MD 20785
Based in Alexandria, 14 mi away
90/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 1,631 Google reviews, open 24/7.
- 4.9★ from 1,631 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5707A Edsall Rd, Alexandria, VA 22304
Based in Greenbelt, 9 mi away
90/100CR ScoreRanked #8 because of its Google rating and availability: 4.8★ from 1,306 Google reviews, open 24/7.
- 4.8★ from 1,306 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7255 Hanover Pkwy Ste A, Greenbelt, MD 20770
Based in Fairfax, 19 mi away
90/100CR ScoreRanked #9 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
#10 Caffi Services
Based in Alexandria, 9 mi away
89/100CR ScoreRanked #10 because of its Google rating and availability: 4.9★ from 508 Google reviews, open 24/7.
- 4.9★ from 508 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1313 Powhatan St, Alexandria, VA 22314
Based in Silver Spring, 13 mi away
89/100CR ScoreRanked #11 because of its Google rating and availability: 4.6★ from 8,136 Google reviews, open 24/7.
- 4.6★ from 8,136 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 550 Forest Glen Rd, Silver Spring, MD 20901
Based in Crofton, 14 mi away
89/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 1,156 Google reviews, open 24/7.
- 4.9★ from 1,156 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2142 Priest Bridge Court #6, Crofton, MD 21114
Based in Rosaryville, 18 mi away
89/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 1,032 Google reviews, open 24/7.
- 5.0★ from 1,032 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2003 Chaneyville Rd, Owings, MD 20736
Based in Cheverly, 4 mi away
89/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 166 Google reviews, open 24/7.
- 4.9★ from 166 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1712 62nd Ave, Cheverly, MD 20785
#15 GW Air Service
Based in St. Charles, 7 mi away
89/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 270 Google reviews, open 24/7.
- 4.9★ from 270 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#16 GAC Services
Based in Gaithersburg, 25 mi away
89/100CR ScoreRanked #16 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
Based in Fairfax, 18 mi away
89/100CR ScoreRanked #17 because of its Google rating and availability: 4.9★ from 1,794 Google reviews, open 24/7.
- 4.9★ from 1,794 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2800 Juniper St #10, Fairfax, VA 22031
Based in Washington, D.C., 6 mi away
89/100CR ScoreRanked #18 because of its Google rating and availability: 4.9★ from 205 Google reviews, open 24/7.
- 4.9★ from 205 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 100 M St SE #600, Washington, DC 20003
Based in Alexandria, 11 mi away
88/100CR ScoreRanked #19 because of its Google rating and availability: 4.9★ from 440 Google reviews, open 24/7.
- 4.9★ from 440 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3045 Colvin St, Alexandria, VA 22314
Based in Silver Spring, 12 mi away
88/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 293 Google reviews, open 24/7.
- 5.0★ from 293 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9407 New Hampshire Ave, Silver Spring, MD 20903
Based in Annapolis, 21 mi away
88/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 2,904 Google reviews, open 24/7.
- 4.9★ from 2,904 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1991 Moreland Pkwy, Annapolis, MD 21401
#22 Mission Comfort
Based in Waldorf, 16 mi away
88/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 625 Google reviews, open 24/7.
- 5.0★ from 625 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11822 Pika Dr, Waldorf, MD 20602
Based in Largo, 4 mi away
88/100CR ScoreRanked #23 because of its Google rating and availability: 4.8★ from 176 Google reviews, open 24/7.
- 4.8★ from 176 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9701 Apollo Dr Suite 100-16, Largo, MD 20774
Based in Clarksburg, 7 mi away
88/100CR ScoreRanked #24 because of its Google rating and availability: 4.8★ from 302 Google reviews, open 24/7.
- 4.8★ from 302 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#25 United Air Temp
Based in Alexandria, 15 mi away
88/100CR ScoreRanked #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
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 983 ranked HVAC contractors here; the rest are on their profiles.
Also serving District Heights
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 |
|---|---|---|
| Calvert Mechanical | 3.0★ (1) | In District Heights |
| Cora AC | 5.0★ (2) | 7 mi |
| Coreno HVAC Repair Washington | 5.0★ (2) | 9 mi |
| DC HVAC, Heating and Air Conditioning | 5.0★ (2) | 7 mi |
| Ferguson | 3.0★ (2) | 8 mi |
| Heravo HVAC Repair Washington | 5.0★ (2) | 8 mi |
| Horizon Mechanical Services LLC | 5.0★ (2) | 2 mi |
| JDL HVAC & Plumbing Services | 4.8★ (678) | 16 mi |
| JM INSULATION LLC | 5.0★ (2) | 9 mi |
| Kingsway Air Services LLC. | In District Heights | |
| Logan Mechanical LLC | 4.7★ (155) | 6 mi |
| S&W Controls, Inc. | 5.0★ (2) | 2 mi |
| T & T Plumbing And Heating | 5.0★ (2) | 8 mi |
| Thomas E Clark Inc | 4.8★ (299) | 14 mi |
| TRINITY PRO SERVICES | 4.7★ (257) | 2 mi |
| Ultra Painting HVAC Pros | 5.0★ (2) | 8 mi |
| United Air Temp | 4.4★ (4,301) | 18 mi |
| United Service Company | 5.0★ (2) | In District Heights |
| Xavino HVAC Repair Washington | 5.0★ (2) | 9 mi |
| Zelavo HVAC Repair Washington | 5.0★ (2) | 9 mi |
How much do HVAC contractors cost in District Heights?
National price ranges in USD, not adjusted for District Heights. 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 |
How to check an HVAC contractor's license in Maryland
In Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors licenses Heating, ventilation, air conditioning and refrigeration work.
- Check that the status is active and the name matches the contract or truck.
- 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 Maryland
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 District Heights HVAC contractors
We scored 983 District Heights 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.
| Factor | Weight | Computed from | In District Heights data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
HVAC contractors in District Heights: frequently asked questions
Who is the best HVAC contractor in District Heights?
By CR Score, the highest-ranked HVAC contractor in District Heights, MD is United Air Temp with a CR Score of 91/100. It has 4.8★ from 1,775 Google reviews. It is open 24/7. Belair Engineering and Service Company, Inc. (#2) and Michael & Son Services (#3) follow. We ranked 983 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in District Heights?
ContractorsRanked ranks 983 HVAC contractors serving District Heights, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in District Heights are open 24/7?
302 ranked HVAC contractors in District Heights post 24/7 hours. The highest-ranked are United Air Temp (#1), Belair Engineering and Service Company, Inc. (#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 District Heights work on weekends?
643 of 983 ranked HVAC contractors post Saturday hours and 452 post Sunday hours. The highest-ranked open Saturdays are United Air Temp (#1), Belair Engineering and Service Company, Inc. (#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 Maryland?
In Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors handles licensing and covers Heating, ventilation, air conditioning and refrigeration work.
How much does ac replacement cost in District Heights?
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 District Heights. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do District Heights HVAC contractors have?
The median Google rating among 983 rated HVAC contractors in District Heights is 4.9★, with a median of 20 reviews. Michael & Son Services has the most, 15,537 reviews, and ranks #3. 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 District Heights?
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 District Heights
- October 2026: CR Scores recalculated for 983 hvac contractors serving District Heights.
- October 2026: 12 duplicate listings merged.
More HVAC contractors and District Heights pages
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Other trades in District Heights
- Roofers in District Heights1472 ranked
- Plumbers in District Heights751 ranked
- Electricians in District Heights712 ranked
- General contractors in District Heights1471 ranked
- Painters in District Heights315 ranked
- Landscapers in District Heights272 ranked
- Handymen in District Heights200 ranked
- Kitchen remodelers in District Heights1044 ranked
- Bathroom remodelers in District Heights1024 ranked
- Flooring contractors in District Heights775 ranked
- Tile installers in District Heights89 ranked
- Drywall contractors in District Heights23 ranked
- Concrete contractors in District Heights342 ranked
- Fence contractors in District Heights165 ranked
- Deck builders in District Heights409 ranked
- Siding contractors in District Heights624 ranked
- Window installers in District Heights691 ranked
- Gutter installers in District Heights339 ranked
- Insulation contractors in District Heights141 ranked
- Solar installers in District Heights191 ranked
- Garage door repair companies in District Heights137 ranked
- Foundation repair companies in District Heights201 ranked
- Tree services in District Heights317 ranked
- Masonry contractors in District Heights300 ranked
- Water damage restoration companies in District Heights847 ranked
- Home builders in District Heights754 ranked
- Demolition contractors in District Heights103 ranked
- All contractors in District Heights