Top 50 of 401 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 Woodstock: Cool Air Mechanical, 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 | Cool Air Mechanical | 67 | 4.9★ (10,810) | Marietta, 7 mi away | 24/7 |
| 2 | Coolray Heating & Air Conditioning | 66 | 4.8★ (10,615) | Marietta, 7 mi away | 24/7 |
| 3 | HVAC Bee | 65 | 5.0★ (582) | Woodstock | 24/7 |
| 4 | E. Dennis Heating, Cooling, Plumbing & Electrical | 64 | 4.9★ (4,846) | Marietta, 11 mi away | 24/7 |
| 5 | E. Smith Heating & Air Conditioning | 64 | 4.9★ (1,775) | Marietta, 9 mi away | 24/7 |
| 6 | Premier Indoor Comfort Systems | 63 | 4.8★ (1,047) | Canton, 9 mi away | 24/7 |
| 7 | Wincorp Master Plumbers | 63 | 5.0★ (126) | Woodstock | 24/7 |
| 8 | Casteel Heating, Cooling, Plumbing & Electrical | 62 | 4.8★ (10,009) | Marietta, 7 mi away | 24/7 |
| 9 | Summit | 62 | 5.0★ (529) | Marietta, 10 mi away | 24/7 |
| 10 | Air Force Heating & Air | 62 | 4.8★ (1,194) | Marietta, 13 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 · 4.9 from 10,810 Google reviews
#2Coolray Heating & Air Conditioning
Open 24/7 · 4.8 from 10,615 Google reviews
#3HVAC Bee
Open 24/7 · 5.0 from 582 Google reviews
#4E. Dennis Heating, Cooling, Plumbing & Electrical
Open 24/7 · 4.9 from 4,846 Google reviews
#5E. Smith Heating & Air Conditioning
Open 24/7 · 4.9 from 1,775 Google reviews
#6Premier Indoor Comfort Systems
Open 24/7 · 4.8 from 1,047 Google reviews
Open 24/7 · 5.0 from 126 Google reviews
#8Casteel Heating, Cooling, Plumbing & Electrical
Open 24/7 · 4.8 from 10,009 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 401 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: 4.9★ from 10,810 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 7 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 10,615 Google reviews, listed on Google as “HVAC contractor”.
Based in Woodstock
Ranked #3 because of its Google rating and trade focus: 5.0★ from 582 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 11 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 4,846 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 9 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,775 Google reviews, listed on Google as “HVAC contractor”.
Based in Canton, 9 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 1,047 Google reviews, listed on Google as “HVAC contractor”.
Based in Woodstock
Ranked #7 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Heating contractor”.
Based in Marietta, 7 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 10,009 Google reviews.
Based in Marietta, 10 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 529 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Marietta, 13 mi away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 1,194 Google reviews, listed on Google as “HVAC contractor”.
Based in Roswell, 11 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 880 Google reviews, listed on Google as “HVAC contractor”.
Based in Canton, 18 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 2,157 Google reviews, listed on Google as “HVAC contractor”.
Based in Alpharetta, 18 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,955 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 22 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 7,525 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 497 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 3 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 193 Google reviews, listed on Google as “HVAC contractor”.
Based in Alpharetta, 14 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 754 Google reviews, listed on Google as “HVAC contractor”.
Based in Roswell, 6 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 137 Google reviews, listed on Google as “HVAC contractor”.
Based in Cartersville, 18 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 1,303 Google reviews, listed on Google as “Furnace repair service”.
Based in Woodstock
Ranked #20 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 3,152 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 11 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 408 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 15 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 508 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 159 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Marietta, 7 mi away
Ranked #25 because of its Google rating and review volume: 4.9★ from 1,853 Google reviews.
#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 |