438 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in St. Louis: Hoffmann Brothers, CR Score 67/100; 4.9★ from 5,847 Google reviews; open 24/7.
Best for emergencies (open 24/7): Classic Aire Care, posts 24/7 hours; ranked #2 of 438.
Most-reviewed: Hoffmann Brothers, 10,949 Google reviews at 4.9★, the most of 438 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
438 St. Louis HVAC contractors are ranked here by CR Score, from ten published factors. 146 are open 24/7, 274 open Saturdays and 229 open Sundays, based on posted hours. The median Google rating is 4.9★ across 438 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Hoffmann Brothers | 67 | 4.9★ (5,847) | St. Louis | 24/7 | Overall |
| 2 | Classic Aire Care | 67 | 4.9★ (4,820) | St. Louis | 24/7 | Emergencies |
| 3 | Rhymes Heating and Cooling | 66 | 5.0★ (1,430) | St. Louis | 24/7 | — |
| 4 | Scott-Lee Company | 66 | 4.9★ (2,175) | St. Louis | 24/7 | — |
| 5 | Dole Heating & Air Conditioning | 65 | 4.9★ (1,401) | St. Louis | 24/7 | — |
| 6 | Morrison Plumbing, Heating, Air, & Electrical Services | 65 | 4.9★ (8,631) | Collinsville, 10 mi away | 24/7 | — |
| 7 | Hoffmann Brothers | 65 | 4.9★ (10,949) | Brentwood, 8 mi away | Sat · Sun · Evenings | Most reviews |
| 8 | Hoffmann Brothers | 64 | 4.9★ (5,170) | St. Louis | Sat | — |
| 9 | SmartHouse Heating and Cooling | 64 | 4.9★ (476) | St. Louis | 24/7 | — |
| 10 | St. Louis Heating and Air Conditioning | 64 | 4.9★ (487) | St. Louis | 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 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
Ranked #2 because of its Google rating and trade focus: 4.9★ from 4,820 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #3 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
Ranked #4 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
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,401 Google reviews, listed on Google as “HVAC contractor”.
Based in Collinsville, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 8,631 Google reviews, listed on Google as “HVAC contractor”.
Based in Brentwood, 8 mi away
Ranked #7 because of its Google rating and review volume: 4.9★ from 10,949 Google reviews, the most in St. Louis.
Based in St. Louis
Ranked #8 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
Ranked #9 because of its Google rating and trade focus: 4.9★ from 476 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #10 because of its Google rating and trade focus: 4.9★ from 487 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #11 because of its Google rating and trade focus: 4.9★ from 494 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #12 because of its Google rating and trade focus: 5.0★ from 926 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,051 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis
Ranked #14 because of its Google rating and trade focus: 4.7★ from 2,264 Google reviews, listed on Google as “HVAC contractor”.
Based in Edwardsville, 17 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 Hazelwood, 16 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 6,727 Google reviews, listed on Google as “Air conditioning contractor”.
Based in St. Louis
Ranked #17 because of its Google rating and trade focus: 5.0★ from 163 Google reviews, listed on Google as “HVAC contractor”.
Based in Fairview Heights, 12 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 1,160 Google reviews, listed on Google as “HVAC contractor”.
Based in Belleville, 11 mi away
Ranked #19 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 Collinsville, 13 mi away
Ranked #20 because of its Google rating and trade focus: 4.7★ from 5,072 Google reviews, listed on Google as “HVAC contractor”.
Based in Hazelwood, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 2,041 Google reviews, listed on Google as “HVAC contractor”.
Based in Florissant, 12 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 1,285 Google reviews, listed on Google as “HVAC contractor”.
Based in Arnold, 15 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 1,400 Google reviews, listed on Google as “HVAC contractor”.
Based in Edwardsville, 14 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 1,039 Google reviews, listed on Google as “Heating contractor”.
Based in St. Louis
Ranked #25 because of its Google rating and trade focus: 4.8★ from 152 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 438 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 |
|---|---|---|
| Commercial Kitchen Services | 4.2★ (53) | In St. Louis |
| Corporate Flooring Group | 4.5★ (15) | In St. Louis |
| County Co | 4.0★ (1) | In St. Louis |
| Elite Heating & Cooling | 1.0★ (2) | In St. Louis |
| Gateway ACC | 5.0★ (2) | In St. Louis |
| Glosemeyer Mechanical | 4.2★ (42) | In St. Louis |
| JBR Heating and Cooling | 5.0★ (20) | 3 mi |
| Merlo Plumbing Co. Inc. | 3.6★ (54) | In St. Louis |
| Miller Certified Air | 5.0★ (1) | In St. Louis |
| Missouri Furnace & Air Conditioning | 4.9★ (275) | 18 mi |
| Niksic Air Conditioning & Heating | 4.6★ (22) | In St. Louis |
| NOOTER St. Louis | 4.6★ (21) | In St. Louis |
| Pierce Heating and Air | 5.0★ (10) | In St. Louis |
| Rathgeber Heating Co | 5.0★ (18) | In St. Louis |
| RJP Electric | 4.4★ (18) | In St. Louis |
| Sears Heating and Air Conditioning | 2.0★ (2) | In St. Louis |
| SMART St. Louis | 5.0★ (2) | In St. Louis |
| St Louis Heating and Cooling | 4.7★ (15) | In St. Louis |
| St. Louis Heating & Cooling | 4.6★ (15) | In St. Louis |
| Streib Company | 4.9★ (679) | In St. Louis |
National price ranges in USD, not adjusted for St. Louis. 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 |
HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 438 St. Louis 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 St. Louis 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 |