419 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cahokia: Morrison Plumbing, Heating, Air, & Electrical Services, CR Score 65/100; 4.9★ from 8,631 Google reviews; open 24/7.
Best for emergencies (open 24/7): Dole Heating & Air Conditioning, posts 24/7 hours; ranked #2 of 419.
Most-reviewed: Hoffmann Brothers, 10,949 Google reviews at 4.9★, the most of 419 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
419 Cahokia HVAC contractors are ranked here by CR Score, from ten published factors. 140 are open 24/7, 265 open Saturdays and 220 open Sundays, based on posted hours. The median Google rating is 4.9★ across 419 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Morrison Plumbing, Heating, Air, & Electrical Services | 65 | 4.9★ (8,631) | Collinsville, 12 mi away | 24/7 | Overall |
| 2 | Dole Heating & Air Conditioning | 65 | 4.9★ (1,401) | St. Louis, 3 mi away | 24/7 | Emergencies |
| 3 | Hoffmann Brothers | 64 | 4.9★ (10,949) | Brentwood, 9 mi away | Sat · Sun · Evenings | Most reviews |
| 4 | Rhymes Heating and Cooling | 64 | 5.0★ (1,430) | St. Louis, 8 mi away | 24/7 | — |
| 5 | Classic Aire Care | 64 | 4.9★ (4,820) | St. Louis, 14 mi away | 24/7 | — |
| 6 | BELOMAN | 63 | 4.9★ (1,500) | Belleville, 9 mi away | 24/7 | — |
| 7 | Hoffmann Brothers | 63 | 4.9★ (5,847) | St. Louis, 16 mi away | 24/7 | — |
| 8 | Vitt Heating & Cooling | 63 | 4.9★ (494) | St. Louis, 4 mi away | 24/7 | — |
| 9 | Classic Aire Care | 63 | 5.0★ (1,160) | Fairview Heights, 12 mi away | 24/7 | — |
| 10 | Classic Aire Care | 63 | 5.0★ (1,400) | Arnold, 13 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 Cahokia
Based in Collinsville, 12 mi away
Ranked #1 because of its Google rating and trade focus: 4.9★ from 8,631 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 3 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,401 Google reviews, listed on Google as “HVAC contractor”.
Based in Brentwood, 9 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 10,949 Google reviews, the most in Cahokia.
Based in St. Louis, 8 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 1,430 Google reviews, listed on Google as “Heating contractor”.
Based in St. Louis, 14 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 4,820 Google reviews, listed on Google as “HVAC contractor”.
Based in Belleville, 9 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,500 Google reviews, listed on Google as “Air conditioning repair service”.
Based in St. Louis, 16 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 5,847 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 4 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 494 Google reviews, listed on Google as “HVAC contractor”.
Based in Fairview Heights, 12 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 1,160 Google reviews, listed on Google as “HVAC contractor”.
Based in Arnold, 13 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 1,400 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 13 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 2,175 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 5 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 5,170 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 5 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 487 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 6 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 926 Google reviews, listed on Google as “HVAC contractor”.
Based in Edwardsville, 20 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 5,405 Google reviews, listed on Google as “HVAC contractor”.
Based in Collinsville, 15 mi away
Ranked #16 because of its Google rating and trade focus: 4.7★ from 5,072 Google reviews, listed on Google as “HVAC contractor”.
Based in Hazelwood, 19 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 6,727 Google reviews, listed on Google as “Air conditioning contractor”.
Based in O'Fallon, 13 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 586 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 9 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 476 Google reviews, listed on Google as “HVAC contractor”.
Based in Hazelwood, 17 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 2,041 Google reviews, listed on Google as “HVAC contractor”.
Based in Collinsville, 13 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 890 Google reviews, listed on Google as “HVAC contractor”.
Based in Edwardsville, 17 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 1,039 Google reviews, listed on Google as “Heating contractor”.
Based in Florissant, 16 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 1,285 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 7 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 163 Google reviews, listed on Google as “HVAC contractor”.
Based in Ballwin, 18 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 1,825 Google reviews, listed on Google as “Furnace repair service”.
#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 419 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 |
|---|---|---|
| Advanced Heating Cooling and Refrigeration | 5.0★ (2) | 22 mi |
| Air Rescue | 5.0★ (10) | 6 mi |
| Brentwood Heating, Cooling & Duct Cleaning | 5.0★ (2) | 23 mi |
| Climate Bullies Heating and Cooling | 4.9★ (36) | 11 mi |
| Coleman Heating and Sheet Metal | 5.0★ (2) | 20 mi |
| Craig-Air Cooling & Heating | 4.9★ (82) | 16 mi |
| Dee Heating and Cooling | 5.0★ (2) | 6 mi |
| Elite Heating & Cooling | 1.0★ (2) | 11 mi |
| Elm Heating & Air Conditioning | 5.0★ (2) | 13 mi |
| Midwest Radiant Heat Inc | 3.0★ (2) | 16 mi |
| Nation-Wide Refrigeration Inc | 5.0★ (2) | 22 mi |
| Nilos, LLC | 5.0★ (2) | 10 mi |
| Optimal Heating and Cooling | 5.0★ (2) | 23 mi |
| Pierce Heating and Air | 5.0★ (10) | 4 mi |
| Sears Heating and Air Conditioning | 2.0★ (2) | 16 mi |
| SMART St. Louis | 5.0★ (2) | 14 mi |
| St Louis Heating and Cooling | 4.7★ (15) | 6 mi |
| Stellar Heating and Air Conditioning | 5.0★ (2) | 22 mi |
| TC Heating and Cooling | 5.0★ (2) | 3 mi |
| Triple L | 3.5★ (2) | 22 mi |
National price ranges in USD, not adjusted for Cahokia. 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 419 Cahokia 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 Cahokia 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 |