656 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Decatur: Moncrief Heating & Air Conditioning, CR Score 64/100; 4.8★ from 3,152 Google reviews; open 24/7.
Best for emergencies (open 24/7): ANYTIME HEATING, COOLING AND PLUMBING, posts 24/7 hours; ranked #2 of 656.
Most-reviewed: Cool Air Mechanical, 10,810 Google reviews at 4.9★, the most of 656 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
656 Decatur HVAC contractors are ranked here by CR Score, from ten published factors. 210 are open 24/7, 474 open Saturdays and 307 open Sundays, based on posted hours. The median Google rating is 4.9★ across 656 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Moncrief Heating & Air Conditioning | 64 | 4.8★ (3,152) | Atlanta, 7 mi away | 24/7 | Overall |
| 2 | ANYTIME HEATING, COOLING AND PLUMBING | 64 | 4.9★ (2,157) | Canton, 9 mi away | 24/7 | Emergencies |
| 3 | Bardi Heating, Cooling, Plumbing, Electrical | 63 | 4.7★ (7,525) | Norcross, 13 mi away | 24/7 | — |
| 4 | Cool Air Mechanical | 63 | 4.9★ (10,810) | Marietta, 20 mi away | 24/7 | Most reviews |
| 5 | Peachtree Service Experts | 63 | 4.9★ (6,700) | Duluth, 18 mi away | 24/7 | — |
| 6 | Champion HVAC & Plumbing | 63 | 4.9★ (760) | Decatur | Sat · Sun · Evenings | — |
| 7 | Dynasty Heating and Air | 63 | 4.9★ (237) | Decatur | 24/7 | — |
| 8 | E. Dennis Heating, Cooling, Plumbing & Electrical | 63 | 4.9★ (4,846) | Marietta, 17 mi away | 24/7 | — |
| 9 | Cunningham Associates | 63 | 4.8★ (1,107) | Atlanta, 8 mi away | 24/7 | — |
| 10 | PV Heating, Cooling & Plumbing | 62 | 4.9★ (2,524) | Atlanta, 9 mi away | Sat · Sun · Evenings | — |
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 trade focus: 4.8★ from 3,152 Google reviews, listed on Google as “HVAC contractor”.
Based in Canton, 9 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,157 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 13 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 7,525 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 20 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 10,810 Google reviews, listed on Google as “HVAC contractor”.
Based in Duluth, 18 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 6,700 Google reviews, listed on Google as “HVAC contractor”.
Based in Decatur
Ranked #6 because of its Google rating and trade focus: 4.9★ from 760 Google reviews, listed on Google as “HVAC contractor”.
Based in Decatur
Ranked #7 because of its Google rating and trade focus: 4.9★ from 237 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 17 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 4,846 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 8 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 1,107 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 9 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 2,524 Google reviews, listed on Google as “HVAC contractor”.
Based in Marietta, 21 mi away
Ranked #11 because of its Google rating and trade focus: 4.8★ from 10,615 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 11 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 508 Google reviews, listed on Google as “HVAC contractor”.
Based in Suwanee, 21 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 6,685 Google reviews, listed on Google as “HVAC contractor”.
Based in Decatur
Ranked #14 because of its Google rating and trade focus: 4.9★ from 1,150 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 12 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 3,109 Google reviews, listed on Google as “HVAC contractor”.
Based in Sugar Hill, 6 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 256 Google reviews, listed on Google as “HVAC contractor”.
Based in Lawrenceville, 24 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 6,399 Google reviews, listed on Google as “HVAC contractor”.
Based in Stockbridge, 16 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 895 Google reviews, listed on Google as “HVAC contractor”.
Based in Candler-McAfee, 7 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 212 Google reviews, listed on Google as “HVAC contractor”.
Based in Fayetteville, 20 mi away
Ranked #20 because of its Google rating and trade focus: 4.8★ from 4,184 Google reviews, listed on Google as “HVAC contractor”.
Based in Decatur
Ranked #21 because of its Google rating and trade focus: 4.6★ from 213 Google reviews, listed on Google as “HVAC contractor”.
Based in Decatur
Ranked #22 because of its Google rating and trade focus: 5.0★ from 58 Google reviews, listed on Google as “HVAC contractor”.
Based in Peachtree Corners, 14 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 9,045 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 22 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 3,664 Google reviews, listed on Google as “HVAC contractor”.
Based in Atlanta, 11 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 4,617 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 656 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 |
|---|---|---|
| AC & HEAT and APPLIANCES | 3.0★ (2) | 5 mi |
| Accurate Services Inc | 5.0★ (2) | 9 mi |
| Adanac Air Systems | 3.0★ (2) | 11 mi |
| All Pro Mechanical of North Atlanta | 5.0★ (2) | In Decatur |
| All Source Building Services | In Decatur | |
| Arctic Blast Heating & Air Conditioning | 4.9★ (182) | 10 mi |
| Bardi Heating, Cooling, Plumbing, Electrical | 4.8★ (880) | 19 mi |
| C.B's Heating and Air Conditioning, LLC. | 4.8★ (38) | 4 mi |
| Element Mechanical | In Decatur | |
| EME Construction | 5.0★ (2) | 2 mi |
| Gitechs3 | 1.0★ (1) | In Decatur |
| JC Heating and Air Conditioning LLC | 5.0★ (2) | 10 mi |
| KC A/C & Heat | 5.0★ (2) | 4 mi |
| Locklear Service Company, LLC | 5.0★ (2) | 7 mi |
| Magho HVAC, LLC | 5.0★ (2) | 11 mi |
| MMI Home Improvement | 4.8★ (260) | 13 mi |
| Reliance Heating and Air | 4.9★ (489) | 19 mi |
| Sentry Mold Protection | 4.7★ (84) | In Decatur |
| Ur Heating & Air and Handyman Services | 3.0★ (2) | 4 mi |
| Williams Brothers Heating & AC | 5.0★ (2) | 10 mi |
National price ranges in USD, not adjusted for Decatur. 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 656 Decatur 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 Decatur 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 |