45 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Union: Childers Heating & Air Conditioning, CR Score 62/100; 4.9★ from 815 Google reviews; open 24/7.
Best for emergencies (open 24/7): Waldrop Plumbing Heating Air, posts 24/7 hours; ranked #2 of 45.
Most-reviewed: Childers Heating & Air Conditioning, 316 Google reviews at 4.8★, the most of 45 ranked after Childers Heating & Air Conditioning; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
45 Union HVAC contractors are ranked here by CR Score, from ten published factors. 15 are open 24/7, 23 open Saturdays and 19 open Sundays, based on posted hours. The median Google rating is 4.7★ across 45 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Childers Heating & Air Conditioning | 62 | 4.9★ (815) | Spartanburg, 23 mi away | 24/7 | Overall |
| 2 | Waldrop Plumbing Heating Air | 60 | 4.9★ (247) | Clinton, 22 mi away | 24/7 | Emergencies |
| 3 | Hanna Heating & Air Conditioning, Inc. | 60 | 4.9★ (243) | Clinton, 23 mi away | 24/7 | — |
| 4 | Childers Heating & Air Conditioning | 60 | 4.8★ (316) | Gaffney, 25 mi away | 24/7 | Most reviews |
| 5 | A.A. Courier & Sons Heating, Cooling and Generator Repair | 59 | 5.0★ (179) | Spartanburg, 22 mi away | Sat · Sun · Evenings | — |
| 6 | P & C Mechanical Inc | 57 | 4.6★ (15) | Union | — | — |
| 7 | Joe W Humphries Heating | 57 | 4.2★ (6) | Union | Sat · Sun · Evenings | — |
| 8 | Bright's Heating and Air, LLC | 57 | 4.8★ (59) | Fountain Inn, 24 mi away | 24/7 | — |
| 9 | Al's A/C and Heating Service LLC. | 57 | 4.8★ (59) | Spartanburg, 24 mi away | 24/7 | — |
| 10 | M&J Mechanical Contractor LLC | 57 | 4.7★ (15) | Gaffney, 14 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.9★ from 815 Google reviews, the most in Union.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 22 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 247 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 23 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 243 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 25 mi away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 316 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 22 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 179 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union
Ranked #6 because of its Google rating and trade focus: 4.6★ from 15 Google reviews, listed on Google as “Heating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Union
Ranked #7 because of its Google rating and trade focus: 4.2★ from 6 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fountain Inn, 24 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 59 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 24 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 59 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 14 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 25 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 45 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 23 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fort Mill, 6 mi away
Ranked #13 because of its Google rating and trade focus: 4.1★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 24 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 313 Google reviews, listed on Google as “Heating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaffney, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.5★ from 49 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 24 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 22 mi away
Ranked #17 because of its Google rating and trade focus: 3.9★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 21 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 82 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 20 mi away
Ranked #20 because of its Google rating and trade focus: 4.2★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Five Forks, 23 mi away
Ranked #21 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chester, 23 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 20 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Clinton, 21 mi away
Ranked #23 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Spartanburg, 24 mi away
Ranked #24 because of its Google rating and trade focus: 3.6★ from 14 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Spartanburg, 23 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #45, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Stacy's Heating/Ac | 51 | 3.6★ (12) | 24 mi |
| 27 | Clark Heating & Air | 51 | 5.0★ (4) | 25 mi |
| 28 | Bill Kirkland Heating and Air Conditioning, Inc. | 50 | 4.4★ (47) | 22 mi |
| 29 | Brian Brown Heating & Air LLC | 50 | 5.0★ (3) | 20 mi |
| 30 | Dunagin Heating & Air | 49 | 5.0★ (5) | 25 mi |
| 31 | Johnson Heating & Air Conditioning | 49 | 4.8★ (9) | 23 mi |
| 32 | Kevin Thompson HVAC | 49 | 4.2★ (5) | 23 mi |
| 33 | Transparent Air LLC | 49 | 5.0★ (4) | 25 mi |
| 34 | Piedmont Heating & Air Conditioning | 49 | 3.4★ (5) | 23 mi |
| 35 | Carolina Air Control, LLC | 48 | 4.3★ (12) | 25 mi |
| 36 | Smith Heating And Air Conditioning | 48 | 4.5★ (8) | 24 mi |
| 37 | Dill Pickle's HVAC | 47 | 5.0★ (4) | 23 mi |
| 38 | Precision Heating & Air | 47 | 3.3★ (9) | 22 mi |
| 39 | Anytime HVAC | 47 | 5.0★ (3) | 22 mi |
| 40 | Tessco Construction | 47 | 5.0★ (35) | 16 mi |
| 41 | Burns Service Center Inc | 47 | 3.6★ (5) | 23 mi |
| 42 | Breeze Heating and Air Service | 47 | 5.0★ (3) | 23 mi |
| 43 | MM Services HVAC | 46 | 3.7★ (3) | 25 mi |
| 44 | United Refrigeration Inc | 42 | 4.6★ (14) | 25 mi |
| 45 | Finley Insulators | 41 | 3.8★ (4) | 23 mi |
17 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 |
|---|---|---|
| Collins Heating & AC | 1.0★ (1) | 24 mi |
| Cool Concepts | In Union | |
| Cool Concepts | In Union | |
| D.B lll LLC. Heating & Air | 5.0★ (2) | 23 mi |
| ES Service Solutions | 5.0★ (1) | 22 mi |
| Hall's Heating & Air | 5.0★ (1) | In Union |
| Harris Heating and Air Conditioning | 23 mi | |
| Henderson Plumbing & Mechanical | 4.5★ (6) | In Union |
| Kingsmore Construction | 3.7★ (3) | In Union |
| Mullinax TAB, Inc | 21 mi | |
| Pack Heating & Air Conditioning LLC | 23 mi | |
| Palmetto Heating & Air | 22 mi | |
| Summler & Chandler Heating | 5.0★ (1) | 22 mi |
| TBA Construction | 3.7★ (26) | In Union |
| The Cooling Crew | 5.0★ (2) | In Union |
| Total Comfort Installations (TCI) | 25 mi | |
| TSC | 5.0★ (2) | 24 mi |
National price ranges in USD, not adjusted for Union. 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 South Carolina, South Carolina Contractor’s Licensing Board (LLR) licenses Mechanical contractor licenses for commercial work; residential specialty contractors register with the Residential Builders Commission.
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 South Carolina, 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 45 Union 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 Union 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 |