Ranked #1 because of its Google rating and review volume: 4.9★ from 10,810 Google reviews, the most in Dallas.
- 4.9★ from 10,810 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1950 Guffin Ln, Marietta, GA 30066
226 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Dallas: Cool Air Mechanical, CR Score 64/100; 4.9★ from 10,810 Google reviews; open 24/7.
Best for emergencies (open 24/7): Coolray Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 226.
Most-reviewed: Coolray Heating & Air Conditioning, 10,615 Google reviews at 4.8★, the most of 226 ranked after Cool Air Mechanical; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
226 Dallas HVAC contractors are ranked here by CR Score, from ten published factors. 84 are open 24/7, 166 open Saturdays and 120 open Sundays, based on posted hours. The median Google rating is 4.9★ across 226 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Cool Air Mechanical | 64 | 4.9★ (10,810) | Marietta, 19 mi away | 24/7 | Overall |
| 2 | Coolray Heating & Air Conditioning | 63 | 4.8★ (10,615) | Marietta, 18 mi away | 24/7 | Emergencies, Most reviews |
| 3 | E. Dennis Heating, Cooling, Plumbing & Electrical | 62 | 4.9★ (4,846) | Marietta, 19 mi away | 24/7 | — |
| 4 | Comfort Solutions Heating & Cooling LLC | 62 | 4.9★ (1,371) | Villa Rica, 14 mi away | 24/7 | — |
| 5 | Guardian Home Experts- Heating, Air, Plumbing & Electrical | 61 | 4.9★ (1,303) | Cartersville, 16 mi away | 24/7 | — |
| 6 | E. Smith Heating & Air Conditioning | 61 | 4.9★ (1,775) | Marietta, 18 mi away | 24/7 | — |
| 7 | Assured Comfort Heating, Air, Plumbing | 61 | 4.8★ (3,674) | Douglasville, 20 mi away | 24/7 | — |
| 8 | Cary Moody Heating & Air | 61 | 4.9★ (493) | Douglasville, 14 mi away | 24/7 | — |
| 9 | H & H Mechanical, Inc. | 60 | 4.9★ (435) | Austell, 13 mi away | 24/7 | — |
| 10 | Summit | 60 | 5.0★ (529) | Marietta, 18 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
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 review volume: 4.9★ from 10,810 Google reviews, the most in Dallas.
Based in Marietta, 18 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 Marietta, 19 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 4,846 Google reviews, listed on Google as “HVAC contractor”.
Based in Villa Rica, 14 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,371 Google reviews, listed on Google as “HVAC contractor”.
Based in Cartersville, 16 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,303 Google reviews, listed on Google as “Furnace repair service”.
Based in Marietta, 18 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,775 Google reviews, listed on Google as “HVAC contractor”.
Based in Douglasville, 20 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 3,674 Google reviews, listed on Google as “HVAC contractor”.
Based in Douglasville, 14 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 493 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Austell, 13 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 435 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 18 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 529 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Marietta, 20 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 1,194 Google reviews, listed on Google as “HVAC contractor”.
Based in Villa Rica, 13 mi away
Ranked #12 because of its Google rating and trade focus: 4.8★ from 287 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Villa Rica, 14 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 141 Google reviews, listed on Google as “HVAC contractor”.
Based in Woodstock, 22 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 582 Google reviews, listed on Google as “HVAC contractor”.
Based in Villa Rica, 15 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 283 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 19 mi away
Ranked #16 because of its Google rating and review volume: 4.8★ from 10,009 Google reviews.
Based in Smyrna, 19 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 339 Google reviews, listed on Google as “HVAC contractor”.
Based in Cartersville, 19 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 463 Google reviews, listed on Google as “Heating contractor”.
Based in Villa Rica, 11 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “HVAC contractor”.
Based in Powder Springs, 9 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 76 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 19 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 Bremen, 16 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 113 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 20 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 312 Google reviews, listed on Google as “HVAC contractor”.
Based in Dallas
Ranked #24 because of its Google rating and trade focus: 4.6★ from 251 Google reviews, listed on Google as “HVAC contractor”.
Based in Villa Rica, 14 mi away
Ranked #25 because of its Google rating and trade focus: 4.6★ from 257 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. We publish the top 50 of 226 ranked HVAC contractors here; the rest are on their profiles.
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 |
|---|---|---|
| 2020 Appliances Repair LLLP | 5.0★ (2) | 16 mi |
| A TEAM SERVICES Heating & Air | 4.6★ (193) | 21 mi |
| Airon Mechanical LLC | 5.0★ (6) | 7 mi |
| Brucker HVAC | 3.8★ (15) | 8 mi |
| Central Heating & Air Conditioning | 5.0★ (2) | 20 mi |
| Edras HVAC Services Douglasville GA | 4.9★ (31) | 18 mi |
| Emperial Heating and Air LLC | 3.0★ (2) | 17 mi |
| HVAC Smyrna GA | 5.0★ (1) | 19 mi |
| mabletongaragedoor | 5.0★ (1) | 17 mi |
| MARService Heating & Air Conditioning | 4.8★ (53) | 20 mi |
| Morgans Mechanical LLC | 5.0★ (14) | 15 mi |
| Pars Air LLC | 5.0★ (2) | 24 mi |
| Reliable Heating Pros - Marietta | 2.5★ (2) | 20 mi |
| Repair Solutions | 5.0★ (1) | 19 mi |
| Shepherd's Home Repair | 4.0★ (2) | 16 mi |
| Southern Airflow Advisors | 4.9★ (94) | 22 mi |
| TempTide | 5.0★ (24) | 17 mi |
| Universal Time Solutions | 5.0★ (2) | 1 mi |
| Westside Test & Balance | 5.0★ (1) | 17 mi |
| Zone Tech Services | 5.0★ (1) | 19 mi |
National price ranges in USD, not adjusted for Dallas. 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 |
In Georgia, Georgia State Construction Industry Licensing Board licenses Conditioned air contractor licenses (Division of Conditioned Air Contractors).
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
In Georgia, air conditioning calls peak in the hottest summer months. Spring is the easiest time to book a tune-up or replacement, before the first heat wave.
We scored 226 Dallas HVAC contractors on ten 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. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, 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 Dallas data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |