425 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Dacula: Casteel Heating, Cooling, Plumbing & Electrical, CR Score 67/100; 4.9★ from 6,399 Google reviews; open 24/7.
Best for emergencies (open 24/7): Peachtree Service Experts, posts 24/7 hours; ranked #2 of 425.
Most-reviewed: Bardi Heating, Cooling, Plumbing, Electrical, 7,525 Google reviews at 4.7★, the most of 425 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
425 Dacula HVAC contractors are ranked here by CR Score, from ten published factors. 122 are open 24/7, 281 open Saturdays and 176 open Sundays, based on posted hours. The median Google rating is 4.9★ across 425 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Casteel Heating, Cooling, Plumbing & Electrical | 67 | 4.9★ (6,399) | Lawrenceville, 4 mi away | 24/7 | Overall |
| 2 | Peachtree Service Experts | 65 | 4.9★ (6,700) | Duluth, 12 mi away | 24/7 | Emergencies |
| 3 | Coolray Heating & Air Conditioning | 65 | 4.8★ (6,685) | Suwanee, 10 mi away | 24/7 | — |
| 4 | Keep Smiling Plumbing Electric Heating and Cooling | 65 | 4.9★ (3,664) | Loganville, 10 mi away | 24/7 | — |
| 5 | Service 1st Pros Heating & Air Conditioning | 65 | 4.8★ (2,078) | Auburn, 4 mi away | 24/7 | — |
| 6 | Reliable Heating & Air, Plumbing and Electrical - Grayson | 65 | 4.8★ (3,335) | Snellville, 7 mi away | 24/7 | — |
| 7 | Henson Mechanical Heating Air and Plumbing | 64 | 4.9★ (1,653) | Loganville, 10 mi away | 24/7 | — |
| 8 | Techmazing Heating and Cooling | 63 | 5.0★ (898) | Loganville, 9 mi away | 24/7 | — |
| 9 | Climate Heroes Air Conditioning | 63 | 4.9★ (1,117) | Suwanee, 9 mi away | 24/7 | — |
| 10 | Ragsdale Heating, Air, Plumbing & Electrical | 63 | 4.9★ (1,409) | Loganville, 12 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 in Dacula
Based in Lawrenceville, 4 mi away
Ranked #1 because of its Google rating and trade focus: 4.9★ from 6,399 Google reviews, listed on Google as “HVAC contractor”.
Based in Duluth, 12 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 6,700 Google reviews, listed on Google as “HVAC contractor”.
Based in Suwanee, 10 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 6,685 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 10 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 3,664 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 4 mi away
Ranked #5 because of its Google rating and trade focus: 4.8★ from 2,078 Google reviews, listed on Google as “HVAC contractor”.
Based in Snellville, 7 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 3,335 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 1,653 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 9 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 898 Google reviews, listed on Google as “Heating contractor”.
Based in Suwanee, 9 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,117 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 12 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,409 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 17 mi away
Ranked #11 because of its Google rating and review volume: 4.7★ from 7,525 Google reviews, the most in Dacula.
Based in Buford, 10 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 615 Google reviews, listed on Google as “HVAC contractor”.
Based in Flowery Branch, 15 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 3,162 Google reviews, listed on Google as “HVAC contractor”.
Based in Monroe, 8 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 497 Google reviews, listed on Google as “Furnace repair service”.
Based in Winder, 4 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “HVAC contractor”.
Based in Alpharetta, 19 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 1,955 Google reviews, listed on Google as “HVAC contractor”.
Based in Buford, 11 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 426 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 11 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 260 Google reviews, listed on Google as “HVAC contractor”.
Based in Loganville, 11 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 538 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 15 mi away
Ranked #20 because of its Google rating and trade focus: 4.4★ from 4,353 Google reviews, listed on Google as “HVAC contractor”.
Based in Sugar Hill, 8 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 315 Google reviews, listed on Google as “HVAC contractor”.
Based in Norcross, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 3,109 Google reviews, listed on Google as “HVAC contractor”.
Based in Monroe, 17 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 435 Google reviews, listed on Google as “HVAC contractor”.
Based in Cumming, 19 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 2,532 Google reviews, listed on Google as “HVAC contractor”.
Based in Canton, 25 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 2,157 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 425 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 |
|---|---|---|
| A & M Heating & Air Conditioning Inc | 4.0★ (2) | 20 mi |
| Able Service Company | 5.0★ (2) | 7 mi |
| Adanac Air Systems | 3.0★ (2) | 20 mi |
| Advantage Mechanical | 3.5★ (2) | 16 mi |
| Air Conditioning Doctors of America | 3.0★ (2) | 5 mi |
| Air Mechanical Inc | 5.0★ (2) | 14 mi |
| AirMaster Heating & Air, Inc. | 4.9★ (438) | 9 mi |
| Arctic Blast Heating & Air Conditioning | 4.9★ (182) | 19 mi |
| Chillout Heating Cooling and Electrical Services | 5.0★ (2) | 21 mi |
| Comfort Air Solutions LLC | 5.0★ (13) | 1 mi |
| Express Heating & Air Conditioning | 5.0★ (2) | 7 mi |
| Fair Air Heating and Air Conditioning | 3.0★ (2) | 7 mi |
| FullAirs LLC | 5.0★ (2) | 13 mi |
| JC Heating and Air Conditioning LLC | 5.0★ (2) | 17 mi |
| PNA HOME REPAIR & HANDYMAN | 3.0★ (2) | 11 mi |
| Ray's Heating & Air | 5.0★ (2) | 12 mi |
| Rng Heating & Air Llc | 5.0★ (2) | 9 mi |
| Robbies Heating & AC | 5.0★ (2) | 17 mi |
| Superior Indoor Comfort, Inc. | 4.8★ (424) | 23 mi |
| Your HVAC Guys | 3.0★ (2) | 10 mi |
National price ranges in USD, not adjusted for Dacula. 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 425 Dacula 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 Dacula 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 |