448 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Maryland Heights: 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 448.
Most-reviewed: Hoffmann Brothers, 10,949 Google reviews at 4.9★, the most of 448 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
448 Maryland Heights HVAC contractors are ranked here by CR Score, from ten published factors. 153 are open 24/7, 291 open Saturdays and 246 open Sundays, based on posted hours. The median Google rating is 4.9★ across 448 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Hoffmann Brothers | 67 | 4.9★ (5,847) | St. Louis, 1 mi away | 24/7 | Overall |
| 2 | Classic Aire Care | 66 | 4.9★ (4,820) | St. Louis, 3 mi away | 24/7 | Emergencies |
| 3 | Academy Air Heating, Cooling, Plumbing and Electric | 66 | 4.8★ (6,727) | Hazelwood, 5 mi away | 24/7 | — |
| 4 | Jerry Kelly Heating & Air Conditioning | 65 | 4.9★ (6,530) | Saint Peters, 10 mi away | 24/7 | — |
| 5 | Air Comfort Service, Inc. | 65 | 4.9★ (2,041) | Hazelwood, 4 mi away | 24/7 | — |
| 6 | Hoffmann Brothers | 65 | 4.9★ (10,949) | Brentwood, 8 mi away | Sat · Sun · Evenings | Most reviews |
| 7 | Design Aire Heating and Cooling | 65 | 4.9★ (2,541) | Maryland Heights | Sat · Sun · Evenings | — |
| 8 | B & B Heating & Cooling | 64 | 5.0★ (1,348) | Saint Charles, 7 mi away | 24/7 | — |
| 9 | Chesterfield Service | 64 | 4.9★ (4,286) | Chesterfield, 11 mi away | 24/7 | — |
| 10 | Air Comfort Service Inc. | 64 | 5.0★ (1,159) | Saint Peters, 9 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 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, 3 mi away
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 Hazelwood, 5 mi away
Ranked #3 because of its Google rating and trade focus: 4.8★ from 6,727 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Saint Peters, 10 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 6,530 Google reviews, listed on Google as “HVAC contractor”.
Based in Hazelwood, 4 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 2,041 Google reviews, listed on Google as “HVAC contractor”.
Based in Brentwood, 8 mi away
Ranked #6 because of its Google rating and review volume: 4.9★ from 10,949 Google reviews, the most in Maryland Heights.
Based in Maryland Heights
Ranked #7 because of its Google rating and trade focus: 4.9★ from 2,541 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles, 7 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 1,348 Google reviews, listed on Google as “HVAC contractor”.
Based in Chesterfield, 11 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 4,286 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Peters, 9 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 1,159 Google reviews, listed on Google as “HVAC contractor”.
Based in Florissant, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 1,285 Google reviews, listed on Google as “HVAC contractor”.
Based in Ballwin, 10 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 1,825 Google reviews, listed on Google as “Furnace repair service”.
Based in Ballwin, 10 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 1,014 Google reviews, listed on Google as “Heating contractor”.
Based in Berkeley, 2 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 303 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 14 mi away
Ranked #15 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, 14 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 1,430 Google reviews, listed on Google as “Heating contractor”.
Based in Collinsville, 22 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 8,631 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles, 7 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 288 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 7 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 Saint Peters, 4 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 275 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Charles, 7 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 422 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 14 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 1,401 Google reviews, listed on Google as “HVAC contractor”.
Based in Saint Peters, 10 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 1,113 Google reviews, listed on Google as “HVAC contractor”.
Based in St. Louis, 6 mi away
Ranked #24 because of its Google rating and trade focus: 4.7★ from 2,264 Google reviews, listed on Google as “HVAC contractor”.
Based in O'Fallon, 16 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 1,068 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 448 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 |
|---|---|---|
| Air Alliance Team | 4.7★ (253) | 12 mi |
| Brentwood Heating, Cooling & Duct Cleaning | 5.0★ (2) | 9 mi |
| Central Air Heating and Cooling | 4.8★ (497) | 19 mi |
| Coleman Heating and Sheet Metal | 5.0★ (2) | 4 mi |
| Dee Heating and Cooling | 5.0★ (2) | 11 mi |
| Expectancy Air Heating & Air Conditioning | 5.0★ (35) | 7 mi |
| Hazelwoods Heating and Air Conditioning | 5.0★ (2) | 15 mi |
| MRC Services LLC | 4.7★ (35) | 4 mi |
| Nation-Wide Refrigeration Inc | 5.0★ (2) | 6 mi |
| One Hour Electric | 5.0★ (1) | In Maryland Heights |
| Optimal Heating and Cooling | 5.0★ (2) | 6 mi |
| Redbird Heating and Cooling | 4.8★ (16) | 1 mi |
| Renaud Brothers Heating & Cooling | 5.0★ (609) | 22 mi |
| Sears Heating and Air Conditioning | 2.0★ (2) | 2 mi |
| SMART St. Louis | 5.0★ (2) | 3 mi |
| Stellar Heating and Air Conditioning | 5.0★ (2) | 6 mi |
| TC Heating and Cooling | 5.0★ (2) | 16 mi |
| Tiger Plumbing, Heating, Air Conditioning, & Electrical Services | 4.7★ (5,072) | 25 mi |
| Veterans HVAC | 5.0★ (2) | 18 mi |
| Weis Comfort Systems | 4.8★ (152) | 12 mi |
National price ranges in USD, not adjusted for Maryland Heights. 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 448 Maryland Heights 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 Maryland Heights 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 |