Top 50 of 495 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
#1 for emergency heating and cooling in Perry Hall: Michael & Son Services, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | Michael & Son Services | 65 | 4.7★ (8,039) | Baltimore, 9 mi away | 24/7 |
| 2 | Blue Dot Services | 63 | 4.5★ (7,297) | Bel Air North, 12 mi away | 24/7 |
| 3 | Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical | 62 | 4.8★ (4,514) | Baltimore, 17 mi away | 24/7 |
| 4 | Complete Climate Services LLC | 62 | 5.0★ (786) | Baltimore, 11 mi away | 24/7 |
| 5 | Maryland Heating & Air | 62 | 4.9★ (369) | Essex, 7 mi away | 24/7 |
| 6 | Broyles HVACR | 62 | 4.9★ (244) | Joppatowne, 6 mi away | 24/7 |
| 7 | Hughes Mechanical, LLC | 62 | 4.8★ (408) | Essex, 7 mi away | 24/7 |
| 8 | Elmar Heating & Cooling | 61 | 4.8★ (614) | Timonium, 10 mi away | 24/7 |
| 9 | HGH Mechanical | 61 | 4.9★ (337) | Edgewood, 9 mi away | 24/7 |
| 10 | At Your Service Heating and Cooling LLC | 61 | 4.6★ (811) | Baltimore, 9 mi away | 24/7 |
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
Open 24/7 · 4.7 from 8,039 Google reviews
Open 24/7 · 4.5 from 7,297 Google reviews
#3Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical
Open 24/7 · 4.8 from 4,514 Google reviews
#4Complete Climate Services LLC
Open 24/7 · 5.0 from 786 Google reviews
Open 24/7 · 4.9 from 369 Google reviews
Open 24/7 · 4.9 from 244 Google reviews
Open 24/7 · 4.8 from 408 Google reviews
Open 24/7 · 4.8 from 614 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 495 is on the HVAC contractors page.
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: 4.7★ from 8,039 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 12 mi away
Ranked #2 because of its Google rating and trade focus: 4.5★ from 7,297 Google reviews, listed on Google as “Heating contractor”.
Based in Baltimore, 17 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 4,514 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 11 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 786 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex, 7 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “HVAC contractor”.
Based in Joppatowne, 6 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 408 Google reviews, listed on Google as “HVAC contractor”.
Based in Timonium, 10 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 614 Google reviews, listed on Google as “HVAC contractor”.
Based in Edgewood, 9 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 9 mi away
Ranked #10 because of its Google rating and trade focus: 4.6★ from 811 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex, 7 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 195 Google reviews, listed on Google as “HVAC contractor”.
Based in Dundalk, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,461 Google reviews, listed on Google as “HVAC contractor”.
Based in Dundalk, 10 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 539 Google reviews, listed on Google as “HVAC contractor”.
Based in Arbutus, 12 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 419 Google reviews, listed on Google as “HVAC contractor”.
Based in Hanover, 21 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 2,167 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 11 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 354 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 12 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 340 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 12 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 309 Google reviews, listed on Google as “HVAC contractor”.
Based in Owings Mills, 17 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 931 Google reviews, listed on Google as “HVAC contractor”.
Based in Havre de Grace, 22 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 2,282 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 411 Google reviews, listed on Google as “HVAC contractor”.
Based in Arbutus, 16 mi away
Ranked #22 because of its Google rating and review volume: 4.7★ from 15,911 Google reviews.
Based in Dundalk, 10 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 247 Google reviews, listed on Google as “HVAC contractor”.
Based in Fallston, 6 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 285 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.
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
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 |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |