Top 50 of 305 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 Bel Air: Blue Dot 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 | Blue Dot Services | 66 | 4.5★ (7,297) | Bel Air North, 3 mi away | 24/7 |
| 2 | Anchor Mechanical LLC | 63 | 4.9★ (340) | Bel Air North, 2 mi away | 24/7 |
| 3 | Horizon Services - Air Conditioning, Heating, Plumbing & Electrical | 63 | 4.8★ (2,282) | Havre de Grace, 13 mi away | 24/7 |
| 4 | Aire Serv of Bel Air | 63 | 4.9★ (309) | Bel Air North, 3 mi away | 24/7 |
| 5 | Michael & Son Services | 63 | 4.7★ (8,039) | Baltimore, 19 mi away | 24/7 |
| 6 | Excel Services | 63 | 4.9★ (411) | Bel Air North, 6 mi away | 24/7 |
| 7 | First Response Heating & Cooling | 62 | 4.8★ (285) | Bel Air North, 4 mi away | 24/7 |
| 8 | HGH Mechanical | 62 | 4.9★ (337) | Edgewood, 6 mi away | 24/7 |
| 9 | One Hour Air Conditioning & Heating® of Harford County | 62 | 4.8★ (292) | Bel Air North, 4 mi away | 24/7 |
| 10 | Griff's Heating and Air | 62 | 5.0★ (93) | Bel Air | 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 · 4.5 from 7,297 Google reviews
Open 24/7 · 4.9 from 340 Google reviews
#3Horizon Services - Air Conditioning, Heating, Plumbing & Electrical
Open 24/7 · 4.8 from 2,282 Google reviews
Open 24/7 · 4.9 from 309 Google reviews
Open 24/7 · 4.7 from 8,039 Google reviews
Open 24/7 · 4.9 from 411 Google reviews
#7First Response Heating & Cooling
Open 24/7 · 4.8 from 285 Google reviews
Open 24/7 · 4.9 from 337 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 305 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: 4.5★ from 7,297 Google reviews, listed on Google as “Heating contractor”.
Based in Bel Air North, 2 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 340 Google reviews, listed on Google as “HVAC contractor”.
Based in Havre de Grace, 13 mi away
Ranked #3 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, 3 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 309 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 19 mi away
Ranked #5 because of its Google rating and review volume: 4.7★ from 8,039 Google reviews.
Based in Bel Air North, 6 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 411 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 4 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 285 Google reviews, listed on Google as “HVAC contractor”.
Based in Edgewood, 6 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 337 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 4 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 292 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air
Ranked #10 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air
Ranked #11 because of its Google rating and trade focus: 4.8★ from 64 Google reviews, listed on Google as “Heating contractor”.
Based in Joppatowne, 9 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 244 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air
Ranked #13 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “HVAC contractor”.
Based in Fallston, 5 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “HVAC contractor”.
Based in Timonium, 17 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 614 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 21 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 786 Google reviews, listed on Google as “HVAC contractor”.
Based in Fallston, 4 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 5 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “HVAC contractor”.
Based in Newark, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 549 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air
Ranked #20 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Essex, 17 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 408 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex, 17 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “HVAC contractor”.
Based in Bel Air North, 6 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based in Baltimore, 20 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 811 Google reviews, listed on Google as “HVAC contractor”.
Based in Essex, 17 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 195 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 |