24 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Greenville: Ernst Heating & Cooling, CR Score 59/100; 4.9★ from 1,222 Google reviews; open Saturdays until 12 PM.
Best for emergencies (open 24/7): V1 Comfort Solutions, posts 24/7 hours; ranked #3 of 24.
Most-reviewed: Mars Plumbing, Heating, Cooling , Sewer & Septic, 207 Google reviews at 4.7★, the most of 24 ranked after Ernst Heating & Cooling; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
24 Greenville HVAC contractors are ranked here by CR Score, from ten published factors. 3 are open 24/7, 8 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.6★ across 24 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ernst Heating & Cooling | 59 | 4.9★ (1,222) | Edwardsville, 23 mi away | Sat | Overall |
| 2 | Mars Plumbing, Heating, Cooling , Sewer & Septic | 56 | 4.7★ (207) | Vandalia, 18 mi away | Sat · Evenings | Most reviews |
| 3 | V1 Comfort Solutions | 56 | 4.4★ (27) | Edwardsville, 17 mi away | 24/7 | Emergencies |
| 4 | Wolf & Sons Inc | 55 | 4.9★ (122) | Highland, 22 mi away | Sat | — |
| 5 | CANNON'S HEATING AND COOLING | 55 | 3.9★ (37) | Centralia, 12 mi away | 24/7 | — |
| 6 | Bergie's Heating & AC | 52 | 4.1★ (9) | Litchfield, 24 mi away | 24/7 | — |
| 7 | Langhauser Sheet Metal Co | 52 | 4.2★ (15) | Highland, 18 mi away | — | — |
| 8 | Climate Co | 51 | 4.7★ (3) | Highland, 19 mi away | Sat · Sun · Evenings | — |
| 9 | Hunter Appliance, Heating & Air | 51 | 4.6★ (34) | Vandalia, 18 mi away | — | — |
| 10 | Neuhaus Heating And Air Inc | 51 | 4.7★ (53) | Litchfield, 23 mi away | — | — |
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 1,222 Google reviews, the most in Greenville.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 18 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 207 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Edwardsville, 17 mi away
Ranked #3 because of its Google rating and trade focus: 4.4★ from 27 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Highland, 22 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 122 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Centralia, 12 mi away
Ranked #5 because of its Google rating and trade focus: 3.9★ from 37 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Litchfield, 24 mi away
Ranked #6 because of its Google rating and trade focus: 4.1★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Highland, 18 mi away
Ranked #7 because of its Google rating and trade focus: 4.2★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Highland, 19 mi away
Ranked #8 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 18 mi away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Litchfield, 23 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 53 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 17 mi away
Ranked #11 because of its Google rating and trade focus: 4.4★ from 25 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 16 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 32 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Staunton, 21 mi away
Ranked #13 because of its Google rating and trade focus: 4.7★ from 16 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Staunton, 21 mi away
Ranked #14 because of its Google rating and trade focus: 4.6★ from 19 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Litchfield, 24 mi away
Ranked #15 because of its Google rating and trade focus: 4.0★ from 12 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Highland, 20 mi away
Ranked #16 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 18 mi away
Ranked #17 because of its Google rating and trade focus: 4.4★ from 9 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Staunton, 22 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “HVAC contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Hillsboro, 19 mi away
Ranked #19 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “Air conditioning contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in O'Fallon, 25 mi away
Ranked #20 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vandalia, 18 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hillsboro, 19 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Litchfield, 23 mi away
Ranked #23 because of its Google rating and trade focus: 4.4★ from 13 Google reviews, listed on Google as “Plumber”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Centralia, 24 mi away
Ranked #24 because of its Google rating and trade focus: 4.3★ from 6 Google reviews, listed on Google as “Plumber”.
Based on 8 of 10 factors; credentials and recency not yet collected.
7 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 |
|---|---|---|
| Carrier Heating & Cooling Snell | 24 mi | |
| Contemporary Service | 5.0★ (1) | 24 mi |
| Dick Mayer Electric Inc | 5.0★ (1) | In Greenville |
| Gen x construction | 24 mi | |
| Mark's Heating & Cooling | 5.0★ (1) | In Greenville |
| Neely's Electrical Service | 5.0★ (8) | In Greenville |
| Neely's Fire N Ice LLC | 5.0★ (2) | In Greenville |
National price ranges in USD, not adjusted for Greenville. 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 Illinois, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 24 Greenville 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 Greenville 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 |