103 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Jefferson: Casteel Heating, Cooling, Plumbing & Electrical, CR Score 62/100; 4.9★ from 6,399 Google reviews; open 24/7.
Best for emergencies (open 24/7): Patriot Heating, Cooling, Plumbing & Electrical, posts 24/7 hours; ranked #2 of 103.
Most-reviewed: Stuart Pro Heating & Air, 4,043 Google reviews at 4.8★, the most of 103 ranked after Casteel Heating, Cooling, Plumbing & Electrical; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
103 Jefferson HVAC contractors are ranked here by CR Score, from ten published factors. 27 are open 24/7, 63 open Saturdays and 43 open Sundays, based on posted hours. The median Google rating is 4.9★ across 103 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Casteel Heating, Cooling, Plumbing & Electrical | 62 | 4.9★ (6,399) | Lawrenceville, 24 mi away | 24/7 | Overall |
| 2 | Patriot Heating, Cooling, Plumbing & Electrical | 62 | 4.9★ (1,066) | Jefferson | 24/7 | Emergencies |
| 3 | Trammell Heating & Air, LLC | 62 | 5.0★ (405) | Jefferson | Sat · Evenings | — |
| 4 | Gee Heating and Air | 61 | 4.8★ (3,162) | Flowery Branch, 21 mi away | 24/7 | — |
| 5 | Service 1st Pros Heating & Air Conditioning | 61 | 4.8★ (2,078) | Auburn, 18 mi away | 24/7 | — |
| 6 | Comfort Tech Inc. | 61 | 5.0★ (260) | Winder, 12 mi away | 24/7 | — |
| 7 | American Comfort Heating and Cooling | 60 | 4.8★ (540) | Winder, 10 mi away | Sat · Sun · Evenings | — |
| 8 | Gilley Mechanical LLC | 60 | 5.0★ (20) | Jefferson | 24/7 | — |
| 9 | GeorgiaSpec Heating and Cooling | 60 | 4.9★ (186) | Jefferson | Sat | — |
| 10 | Zack Hammonds A/C Heating Refrigeration Inc. | 60 | 4.9★ (497) | Monroe, 20 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 Jefferson
Based in Lawrenceville, 24 mi away
Ranked #1 because of its Google rating and review volume: 4.9★ from 6,399 Google reviews, the most in Jefferson.
Based in Jefferson
Ranked #2 because of its Google rating and review volume: 4.9★ from 1,066 Google reviews.
Based in Jefferson
Ranked #3 because of its Google rating and trade focus: 5.0★ from 405 Google reviews, listed on Google as “HVAC contractor”.
Based in Flowery Branch, 21 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 3,162 Google reviews, listed on Google as “HVAC contractor”.
Based in Auburn, 18 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 Winder, 12 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 260 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 540 Google reviews, listed on Google as “HVAC contractor”.
Based in Jefferson
Ranked #8 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based in Jefferson
Ranked #9 because of its Google rating and trade focus: 4.9★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Monroe, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 497 Google reviews, listed on Google as “Furnace repair service”.
Based in Monroe, 23 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 435 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 13 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 172 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 16 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 149 Google reviews, listed on Google as “HVAC contractor”.
Based in Buford, 23 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 426 Google reviews, listed on Google as “HVAC contractor”.
Based in Buford, 22 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 4,043 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 14 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 438 Google reviews, listed on Google as “HVAC contractor”.
Based in Candler-McAfee, 7 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 29 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 14 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 71 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Monroe, 24 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 198 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Commerce, 10 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 55 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Dahlonega, 20 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 121 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 13 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 885 Google reviews, listed on Google as “HVAC contractor”.
Based in Clayton, 20 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 112 Google reviews, listed on Google as “HVAC contractor”.
Based in Commerce, 8 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in Winder, 13 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 144 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 103 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 |
|---|---|---|
| Affordable Heating & Cooling | 5 mi | |
| Air Conditioning Doctors of America | 3.0★ (2) | 18 mi |
| All Pro Mechanical Air Conditioning of Snellville | 2.0★ (1) | 23 mi |
| Avery's HVAC | 4.6★ (11) | 17 mi |
| Beck Mechanical Heating & AC | 5.0★ (2) | In Jefferson |
| Bryan Heating & Air Conditioning | 2.8★ (22) | 23 mi |
| Epic Air Heating and Cooling LLC | 4.9★ (93) | 9 mi |
| Express Heating & Air Conditioning | 5.0★ (2) | 16 mi |
| Fosters HVAC Solutions | 18 mi | |
| Horne Reliable Services, LLC | 24 mi | |
| Impact HVAC Service | 5.0★ (1) | 16 mi |
| Infinity Heating and Air | 4.9★ (75) | 13 mi |
| Kovack Mechanical, Inc. | 4.8★ (131) | 12 mi |
| Millennial Air HVAC | 16 mi | |
| On Point Maintenance INC | 5.0★ (1) | 21 mi |
| Russell Mechanical Inc. | 4.3★ (6) | 18 mi |
| Ryan HVAC Repair Maysville | 10 mi | |
| Shindi Heating and Air LLC | 5.0★ (143) | 17 mi |
| Snellville Heating, Air and Plumbing | 4.8★ (787) | 25 mi |
| Your HVAC Guys | 3.0★ (2) | 19 mi |
National price ranges in USD, not adjusted for Jefferson. 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 103 Jefferson 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 Jefferson 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 |