91/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 469 Google reviews, open 24/7.
- 4.9★ from 469 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 655 Main St #1959, Reisterstown, MD 21136
Best HVAC Contractors in Reisterstown, MD (2026)
529 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Reisterstown: Triple E, CR Score 91/100; 4.9★ from 469 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical, posts 24/7 hours; ranked #2 of 529.
- 18
Most-reviewed: Len The Plumber Heating & Air, LLC, 15,911 Google reviews at 4.7★, the most of 529 ranked; ranked #18.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
529 Reisterstown HVAC contractors are ranked here by CR Score, from 8 published factors. 145 are open 24/7, 297 open Saturdays and 231 open Sundays, based on posted hours. The median Google rating is 4.8★ across 529 rated businesses.
Top 10 HVAC contractors in Reisterstown at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Triple E | 91 | 4.9★ (469) | Reisterstown | 24/7 | Overall |
| 2 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 91 | 4.8★ (4,514) | Baltimore, 11 mi away | 24/7 | Emergencies |
| 3 | Farnen & Dermer | 90 | 4.8★ (931) | Owings Mills, 4 mi away | 24/7 | — |
| 4 | F.H. Furr Plumbing, Heating, Air Conditioning & Electrical | 90 | 4.7★ (1,847) | Eldersburg, 6 mi away | 24/7 | — |
| 5 | First Class Mechanical | 89 | 4.9★ (580) | Westminster, 10 mi away | 24/7 | — |
| 6 | United Air Temp | 89 | 4.9★ (180) | Owings Mills, 3 mi away | 24/7 | — |
| 7 | Apple Plumbing, Heating, & Air | 88 | 4.9★ (679) | Westminster, 13 mi away | 24/7 | — |
| 8 | Michael & Son Services | 88 | 4.7★ (8,039) | Baltimore, 20 mi away | 24/7 | — |
| 9 | Complete Climate Services LLC | 88 | 5.0★ (786) | Baltimore, 18 mi away | 24/7 | — |
| 10 | Elmar Heating & Cooling | 88 | 4.8★ (614) | Timonium, 10 mi away | 24/7 | — |
The 529 best HVAC contractors in Reisterstown, 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 Baltimore, 11 mi away
91/100CR ScoreRanked #2 because of its Google rating and availability: 4.8★ from 4,514 Google reviews, open 24/7.
- 4.8★ from 4,514 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2607 Rolling Rd. #201, Windsor Mill, MD 21244
Based in Owings Mills, 4 mi away
90/100CR ScoreRanked #3 because of its Google rating and availability: 4.8★ from 931 Google reviews, open 24/7.
- 4.8★ from 931 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10500 Reisterstown Rd, Owings Mills, MD 21117
Based in Eldersburg, 6 mi away
90/100CR ScoreRanked #4 because of its Google rating and availability: 4.7★ from 1,847 Google reviews, open 24/7.
- 4.7★ from 1,847 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1584 Deer Park Rd, Finksburg, MD 21048
Based in Westminster, 10 mi away
89/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 580 Google reviews, open 24/7.
- 4.9★ from 580 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 835 Baltimore Blvd, Westminster, MD 21157
Based in Owings Mills, 3 mi away
89/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 180 Google reviews, open 24/7.
- 4.9★ from 180 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 500 Redland Ct # 107, Owings Mills, MD 21117
Based in Westminster, 13 mi away
88/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 679 Google reviews, open 24/7.
- 4.9★ from 679 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 90 Aileron Ct #9, Westminster, MD 21157
Based in Baltimore, 20 mi away
88/100CR ScoreRanked #8 because of its Google rating and availability: 4.7★ from 8,039 Google reviews, open 24/7.
- 4.7★ from 8,039 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6420 Erdman Ave, Baltimore, MD 21205
Based in Baltimore, 18 mi away
88/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 786 Google reviews, open 24/7.
- 5.0★ from 786 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 204 S Chapel St, Baltimore, MD 21231
Based in Timonium, 10 mi away
88/100CR ScoreRanked #10 because of its Google rating and availability: 4.8★ from 614 Google reviews, open 24/7.
- 4.8★ from 614 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9528 Deereco Rd, Timonium, MD 21093
Based in Westminster, 12 mi away
88/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 2,777 Google reviews, open 24/7.
- 5.0★ from 2,777 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 151 W Main St, Westminster, MD 21157
Based in Arbutus, 14 mi away
88/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 419 Google reviews, open 24/7.
- 4.9★ from 419 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Westminster, 7 mi away
88/100CR ScoreRanked #13 because of its Google rating and availability: 5.0★ from 90 Google reviews, open 24/7.
- 5.0★ from 90 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3420 Avis Ct, Westminster, MD 21157
Based in Eldersburg, 4 mi away
87/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 76 Google reviews, open 24/7.
- 4.9★ from 76 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Columbia, 21 mi away
86/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 658 Google reviews, open 24/7.
- 4.9★ from 658 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9375 Gerwig Ln J, Columbia, MD 21046
Based in Baltimore, 15 mi away
86/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 354 Google reviews, open 24/7.
- 4.8★ from 354 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3510 Keswick Rd, Baltimore, MD 21211
Based in Baltimore, 13 mi away
86/100CR ScoreRanked #17 because of its Google rating and availability: 4.8★ from 219 Google reviews, open 24/7.
- 4.8★ from 219 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3702 Yosemite Ave, Baltimore, MD 21215
Based in Arbutus, 17 mi away
86/100CR ScoreRanked #18 because of its Google rating and review volume: 4.7★ from 15,911 Google reviews, the most Google reviews on this list (15,911).
- 4.7★ from 15,911 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3610 Commerce Dr Suite 808, Halethorpe, MD 21227
Based in Arbutus, 17 mi away
86/100CR ScoreRanked #19 because of its Google rating and availability: 4.9★ from 275 Google reviews, open 24/7.
- 4.9★ from 275 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5515 Selma Ave Suite 2B, Halethorpe, MD 21227
Based in Kew Gardens Hills, 15 mi away
86/100CR ScoreRanked #20 because of its Google rating and availability: 4.9★ from 177 Google reviews, open 24/7.
- 4.9★ from 177 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Mount Airy, 18 mi away
86/100CR ScoreRanked #21 because of its Google rating and availability: 4.7★ from 852 Google reviews, open 24/7.
- 4.7★ from 852 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2702 Back Acre Cir, Mt Airy, MD 21771
Based in Randallstown, 7 mi away
86/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 33 Google reviews, open 24/7.
- 5.0★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3671 Offutt Rd suite 824, Randallstown, MD 21133
Based in Eldersburg, 15 mi away
86/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 699 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 699 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–5 PM
Based in Columbia, 16 mi away
85/100CR ScoreRanked #24 because of its Google rating and availability: 4.8★ from 238 Google reviews, open 24/7.
- 4.8★ from 238 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9160 Rumsey Rd Suite B2, Columbia, MD 21045
Based in Essex, 22 mi away
85/100CR ScoreRanked #25 because of its Google rating and availability: 4.9★ from 369 Google reviews, open 24/7.
- 4.9★ from 369 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Mace Ave, Essex, MD 21221
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 529 ranked HVAC contractors here; the rest are on their profiles.
Also serving Reisterstown
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 Quality HVAC | 5.0★ (2) | 6 mi |
| Air Zone Systems, Inc | 5.0★ (2) | 13 mi |
| American Mechanical Repair | 3.0★ (2) | 18 mi |
| Around the Clock Plumbing & Heating | 5.0★ (2) | 19 mi |
| B T Plumbing Supply Inc | 3.9★ (8) | In Reisterstown |
| Beltway Air Conditioning, Heating & Plumbing | 4.9★ (90) | 17 mi |
| Capitol Boiler Works | 1.0★ (2) | 17 mi |
| Elite Heating And Cooling | 3.0★ (2) | 15 mi |
| garagedoorsrepairellicottcitymd | 5.0★ (2) | 15 mi |
| Heating & Air | In Reisterstown | |
| Home Services at The Home Depot | 3.0★ (2) | 10 mi |
| HRM Dryer Vent Cleaning Services Reisterstown, MD | 4.4★ (9) | In Reisterstown |
| Maryland Plumbing, Heating & Cooling Contractors | 5.0★ (2) | 13 mi |
| Mt Airy Heating & Air Conditioning | 5.0★ (2) | 18 mi |
| Palmer Heating and Cooling | 5.0★ (2) | 17 mi |
| Ready Air HVAC | 5.0★ (2) | 19 mi |
| Reliability Home Services | 4.7★ (539) | 24 mi |
| Scardina Plumbing-Heating Inc | 5.0★ (2) | 17 mi |
| SM Dryer Vent Cleaning Services Reisterstown, MD | 4.6★ (7) | In Reisterstown |
| Warrior Plumbing & Heating | 4.9★ (400) | 14 mi |
How much do HVAC contractors cost in Reisterstown?
National price ranges in USD, not adjusted for Reisterstown. 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 Reisterstown HVAC contractors
We scored 529 Reisterstown 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 Reisterstown 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 Reisterstown: frequently asked questions
Who is the best HVAC contractor in Reisterstown?
By CR Score, the highest-ranked HVAC contractor in Reisterstown, MD is Triple E with a CR Score of 91/100. It has 4.9★ from 469 Google reviews. It is open 24/7. Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#2) and Farnen & Dermer (#3) follow. We ranked 529 HVAC contractors on 8 factors, last updated October 22, 2026.
How many HVAC contractors are there in Reisterstown?
ContractorsRanked ranks 529 HVAC contractors serving Reisterstown, MD. 1 of them is based in Reisterstown; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which HVAC contractors in Reisterstown are open 24/7?
145 ranked HVAC contractors in Reisterstown post 24/7 hours. The highest-ranked are Triple E (#1), Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#2) and Farnen & Dermer (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Reisterstown work on weekends?
297 of 529 ranked HVAC contractors post Saturday hours and 231 post Sunday hours. The highest-ranked open Saturdays are Triple E (#1), Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#2) and Farnen & Dermer (#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 Reisterstown?
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 Reisterstown. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Reisterstown HVAC contractors have?
The median Google rating among 529 rated HVAC contractors in Reisterstown is 4.8★, with a median of 21 reviews. Len The Plumber Heating & Air, LLC has the most, 15,911 reviews, and ranks #18. 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 Reisterstown?
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 Reisterstown
- October 2026: CR Scores recalculated for 529 hvac contractors serving Reisterstown.
- October 2026: 2 duplicate listings merged.
More HVAC contractors and Reisterstown pages
HVAC contractors near Reisterstown
- HVAC contractors in Owings Mills, MD596 ranked
- HVAC contractors in Garrison, MD606 ranked
- HVAC contractors in Randallstown, MD648 ranked
- HVAC contractors in Eldersburg, MD641 ranked
- HVAC contractors in Pikesville, MD645 ranked
- HVAC contractors in Milford Mill, MD672 ranked
- HVAC contractors in Hampstead, MD288 ranked
- HVAC contractors in Mays Chapel, MD572 ranked
- HVAC contractors in Cockeysville, MD544 ranked
- HVAC contractors in Hunt Valley, MD524 ranked
Other trades in Reisterstown
- Roofers in Reisterstown1036 ranked
- Plumbers in Reisterstown427 ranked
- Electricians in Reisterstown337 ranked
- General contractors in Reisterstown654 ranked
- Painters in Reisterstown100 ranked
- Landscapers in Reisterstown166 ranked
- Handymen in Reisterstown58 ranked
- Kitchen remodelers in Reisterstown360 ranked
- Bathroom remodelers in Reisterstown366 ranked
- Flooring contractors in Reisterstown327 ranked
- Tile installers in Reisterstown34 ranked
- Drywall contractors in Reisterstown6 ranked
- Concrete contractors in Reisterstown176 ranked
- Fence contractors in Reisterstown67 ranked
- Deck builders in Reisterstown189 ranked
- Siding contractors in Reisterstown461 ranked
- Window installers in Reisterstown471 ranked
- Gutter installers in Reisterstown153 ranked
- Insulation contractors in Reisterstown68 ranked
- Solar installers in Reisterstown125 ranked
- Garage door repair companies in Reisterstown69 ranked
- Foundation repair companies in Reisterstown156 ranked
- Tree services in Reisterstown159 ranked
- Masonry contractors in Reisterstown131 ranked
- Water damage restoration companies in Reisterstown598 ranked
- Home builders in Reisterstown481 ranked
- Demolition contractors in Reisterstown79 ranked
- All contractors in Reisterstown