91/100CR Score
Ranked #1 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
Best HVAC Contractors in Mount Rainier, MD (2026)
1,144 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Mount Rainier: Len The Plumber Heating & Air, LLC, CR Score 91/100; 4.6★ from 8,136 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Michael & Son Services, posts 24/7 hours; ranked #2 of 1,144.
- 2
Most-reviewed: Michael & Son Services, 15,537 Google reviews at 4.7★, the most of 1,144 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
1,144 Mount Rainier HVAC contractors are ranked here by CR Score, from 8 published factors. 339 are open 24/7, 760 open Saturdays and 520 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,144 rated businesses.
Top 10 HVAC contractors in Mount Rainier at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Len The Plumber Heating & Air, LLC | 91 | 4.6★ (8,136) | Silver Spring, 6 mi away | 24/7 | Overall |
| 2 | Michael & Son Services | 91 | 4.7★ (15,537) | Alexandria, 15 mi away | 24/7 | Emergencies, Most reviews |
| 3 | GAC Services | 91 | 4.9★ (6,908) | Gaithersburg, 18 mi away | 24/7 | — |
| 4 | United Air Temp | 91 | 4.8★ (1,306) | Greenbelt, 6 mi away | 24/7 | — |
| 5 | CroppMetcalfe | 90 | 4.8★ (7,638) | Fairfax, 15 mi away | 24/7 | — |
| 6 | NARFIX HEATING AND AIR CONDITIONING LLC | 90 | 5.0★ (293) | Silver Spring, 5 mi away | 24/7 | — |
| 7 | AZA heating, cooling, plumbing & construction | 90 | 5.0★ (959) | Alexandria, 13 mi away | 24/7 | — |
| 8 | United Air Temp | 90 | 4.8★ (1,775) | Fort Washington, 9 mi away | 24/7 | — |
| 9 | John C. Flood | 90 | 4.8★ (4,976) | Alexandria, 15 mi away | 24/7 | — |
| 10 | One Hour Air Conditioning & Heating® of Gaithersburg | 90 | 4.8★ (302) | Clarksburg, 1 mi away | 24/7 | — |
The 1,144 best HVAC contractors in Mount Rainier, 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 Alexandria, 15 mi away
91/100CR ScoreRanked #2 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
#3 GAC Services
Based in Gaithersburg, 18 mi away
91/100CR ScoreRanked #3 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 Greenbelt, 6 mi away
91/100CR ScoreRanked #4 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, 15 mi away
90/100CR ScoreRanked #5 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
Based in Silver Spring, 5 mi away
90/100CR ScoreRanked #6 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 Alexandria, 13 mi away
90/100CR ScoreRanked #7 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 Fort Washington, 9 mi away
90/100CR ScoreRanked #8 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
Based in Alexandria, 15 mi away
90/100CR ScoreRanked #9 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 Clarksburg, 1 mi away
90/100CR ScoreRanked #10 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
Based in Alexandria, 13 mi away
90/100CR ScoreRanked #11 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 Hyattsville, 6 mi away
90/100CR ScoreRanked #12 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 Greater Upper Marlboro, 13 mi away
90/100CR ScoreRanked #13 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 Rockville, 14 mi away
90/100CR ScoreRanked #14 because of its Google rating and availability: 4.7★ from 5,985 Google reviews, open 24/7.
- 4.7★ from 5,985 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 685 Lofstrand Ln, Rockville, MD 20850
Based in Fairfax, 15 mi away
89/100CR ScoreRanked #15 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
#16 Caffi Services
Based in Alexandria, 10 mi away
89/100CR ScoreRanked #16 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 Cheverly, 4 mi away
89/100CR ScoreRanked #17 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
Based in Washington, D.C., 5 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 Crofton, 15 mi away
89/100CR ScoreRanked #19 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 Alexandria, 11 mi away
88/100CR ScoreRanked #20 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 Gaithersburg, 19 mi away
88/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 1,701 Google reviews, open 24/7.
- 4.9★ from 1,701 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8000 Cessna Ave, Gaithersburg, MD 20879
Based in Silver Spring, 7 mi away
88/100CR ScoreRanked #22 because of its Google rating and availability: 4.8★ from 299 Google reviews, open 24/7.
- 4.8★ from 299 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2412 Linden Ln, Silver Spring, MD 20910
Based in Silver Spring, 6 mi away
88/100CR ScoreRanked #23 because of its Google rating and availability: 4.8★ from 291 Google reviews, open 24/7.
- 4.8★ from 291 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2345 Distribution Cir, Silver Spring, MD 20910
Based in Greater Upper Marlboro, 2 mi away
88/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 379 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 379 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 9 AM–4 PM
Based in Springfield, 17 mi away
88/100CR ScoreRanked #25 because of its Google rating and availability: 4.9★ from 966 Google reviews, open 24/7.
- 4.9★ from 966 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7950 Woodruff Ct, Springfield, VA 22151
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 1,144 ranked HVAC contractors here; the rest are on their profiles.
Also serving Mount Rainier
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 |
|---|---|---|
| Conrod's Plumbing Heating and A/C | 5.0★ (2) | 5 mi |
| Cora AC | 5.0★ (2) | 4 mi |
| Coreno HVAC Repair Washington | 5.0★ (2) | 5 mi |
| DC HVAC, Heating and Air Conditioning | 5.0★ (2) | 5 mi |
| DMV Mechanical | 3.0★ (2) | 5 mi |
| Helino HVAC Repair Washington | 5.0★ (2) | 6 mi |
| Heravo HVAC Repair Washington | 5.0★ (2) | 5 mi |
| Homestead Handymen HVAC/R, LLC | 5.0★ (2) | 8 mi |
| Hugee Corporation | 4.6★ (89) | 2 mi |
| JC & JC HVAC | 4.7★ (503) | 11 mi |
| JDL HVAC & Plumbing Services | 4.8★ (678) | 12 mi |
| Pavilo HVAC Repair Washington | 5.0★ (2) | 6 mi |
| R And R Climate Control Inc | 5.0★ (2) | 4 mi |
| R D Springer Plumbing & Heating | 5.0★ (2) | 6 mi |
| T & T Plumbing And Heating | 5.0★ (2) | 4 mi |
| Teravo HVAC Repair Washington | 5.0★ (2) | 5 mi |
| TRINITY PRO SERVICES | 4.7★ (257) | 8 mi |
| Vito Services | 4.7★ (1,351) | 14 mi |
| Xavino HVAC Repair Washington | 5.0★ (2) | 5 mi |
| Zelavo HVAC Repair Washington | 5.0★ (2) | 5 mi |
How much do HVAC contractors cost in Mount Rainier?
National price ranges in USD, not adjusted for Mount Rainier. 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 Mount Rainier HVAC contractors
We scored 1,144 Mount Rainier 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 Mount Rainier 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 Mount Rainier: frequently asked questions
Who is the best HVAC contractor in Mount Rainier?
By CR Score, the highest-ranked HVAC contractor in Mount Rainier, MD is Len The Plumber Heating & Air, LLC with a CR Score of 91/100. It has 4.6★ from 8,136 Google reviews. It is open 24/7. Michael & Son Services (#2) and GAC Services (#3) follow. We ranked 1,144 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Mount Rainier?
ContractorsRanked ranks 1,144 HVAC contractors serving Mount Rainier, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Mount Rainier are open 24/7?
339 ranked HVAC contractors in Mount Rainier post 24/7 hours. The highest-ranked are Len The Plumber Heating & Air, LLC (#1), Michael & Son Services (#2) and GAC Services (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Mount Rainier work on weekends?
760 of 1,144 ranked HVAC contractors post Saturday hours and 520 post Sunday hours. The highest-ranked open Saturdays are Len The Plumber Heating & Air, LLC (#1), Michael & Son Services (#2) and GAC 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 Mount Rainier?
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 Mount Rainier. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Mount Rainier HVAC contractors have?
The median Google rating among 1,144 rated HVAC contractors in Mount Rainier is 4.9★, with a median of 22 reviews. Michael & Son Services has the most, 15,537 reviews, and ranks #2. 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 Mount Rainier?
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 Mount Rainier
- October 2026: CR Scores recalculated for 1,144 hvac contractors serving Mount Rainier.
- October 2026: 11 duplicate listings merged.
More HVAC contractors and Mount Rainier pages
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