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ContractorsRanked

Best HVAC Contractors in Hazelwood, MO (2026)

457 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Hazelwood: Academy Air Heating, Cooling, Plumbing and Electric, CR Score 95/100; 4.8★ from 6,727 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Air Comfort Service, Inc., posts 24/7 hours; ranked #2 of 457.

  3. 12

    Most-reviewed: Hoffmann Brothers, 10,949 Google reviews at 4.9★, the most of 457 ranked; ranked #12.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

457 Hazelwood HVAC contractors are ranked here by CR Score, from 8 published factors. 152 are open 24/7, 294 open Saturdays and 247 open Sundays, based on posted hours. The median Google rating is 4.9★ across 457 rated businesses.

Top 10 HVAC contractors in Hazelwood at a glance

Top 10 HVAC contractors in Hazelwood at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Academy Air Heating, Cooling, Plumbing and Electric954.8★ (6,727)Hazelwood24/7Overall
2Air Comfort Service, Inc.944.9★ (2,041)Hazelwood24/7Emergencies
3Hoffmann Brothers944.9★ (5,847)St. Louis, 6 mi away24/7—
4Classic Aire Care944.9★ (4,820)St. Louis, 6 mi away24/7—
5B & B Heating & Cooling934.9★ (1,285)Florissant, 3 mi away24/7—
6Jerry Kelly Heating & Air Conditioning924.9★ (6,530)Saint Peters, 13 mi away24/7—
7B & B Heating & Cooling925.0★ (1,348)Saint Charles, 9 mi away24/7—
8Air Comfort Service Inc.915.0★ (1,159)Saint Peters, 12 mi away24/7—
9Chesterfield Service914.9★ (4,286)Chesterfield, 16 mi away24/7—
10Morrison Plumbing, Heating, Air, & Electrical Services914.9★ (8,631)Collinsville, 20 mi away24/7—

The 457 best HVAC contractors in Hazelwood, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  3. #3 Hoffmann Brothers

    Based in St. Louis, 6 mi away

    94/100CR Score

    Ranked #3 because of its Google rating and availability: 4.9★ from 5,847 Google reviews, open 24/7.

    • 4.9★ from 5,847 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2043 Woodland Pkwy #100, St. Louis, MO 63146
    View profile for Hoffmann Brothers(314) 880-7437

  4. #4 Classic Aire Care

    Based in St. Louis, 6 mi away

    94/100CR Score

    Ranked #4 because of its Google rating and availability: 4.9★ from 4,820 Google reviews, open 24/7.

    • 4.9★ from 4,820 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1276 N Warson Rd, St. Louis, MO 63132
    View profile for Classic Aire Care(314) 988-2501

  12. #12 Hoffmann Brothers

    Based in Brentwood, 10 mi away

    90/100CR Score

    Ranked #12 because of its Google rating and review volume: 4.9★ from 10,949 Google reviews, the most Google reviews on this list (10,949).

    • 4.9★ from 10,949 Google reviews
    Hours
    Mon–Sun 6 AM–9 PM
    Address
    1025 Hanley Industrial Ct, Brentwood, MO 63144
    View profile for Hoffmann Brothers(314) 347-1403

  13. #13 Premier, Inc

    Based in Saint Charles, 6 mi away

    90/100CR Score

    Ranked #13 because of its Google rating and availability: 4.9★ from 422 Google reviews, open 24/7.

    • 4.9★ from 422 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    179 Hughes Ln, St Charles, MO 63301
    View profile for Premier, Inc(636) 916-1122

  15. #15 Classic Aire Care

    Based in Ballwin, 16 mi away

    90/100CR Score

    Ranked #15 because of its Google rating and availability: 5.0★ from 1,014 Google reviews, open 24/7.

    • 5.0★ from 1,014 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    930 Kehrs Mill Rd suite 325-9, Ballwin, MO 63011
    View profile for Classic Aire Care(636) 200-8250

  16. #16 Hoffmann Brothers

    Based in Edwardsville, 21 mi away

    90/100CR Score

    Ranked #16 because of its Google rating and availability: 4.9★ from 5,405 Google reviews, open 24/7.

    • 4.9★ from 5,405 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1254 University Dr Suite 800, Edwardsville, IL 62025
    View profile for Hoffmann Brothers(618) 271-6200

  21. #21 Integrity Aire

    Based in Saint Charles, 9 mi away

    90/100CR Score

    Ranked #21 because of its Google rating and availability: 5.0★ from 288 Google reviews, open 24/7.

    • 5.0★ from 288 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1382 Charlestown Industrial Dr, St Charles, MO 63303
    View profile for Integrity Aire(314) 803-3664

  23. #23 Scott-Lee Company

    Based in St. Louis, 18 mi away

    89/100CR Score

    Ranked #23 because of its Google rating and availability: 4.9★ from 2,175 Google reviews, open 24/7.

    • 4.9★ from 2,175 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    11010 Gravois Industrial Ct, St. Louis, MO 63128
    View profile for Scott-Lee Company(314) 828-8505

  25. #25 Classic Aire Care

    Based in Edwardsville, 20 mi away

    89/100CR Score

    Ranked #25 because of its Google rating and availability: 5.0★ from 1,039 Google reviews, open 24/7.

    • 5.0★ from 1,039 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3 Sunset Hills Executive Dr #1, Edwardsville, IL 62025
    View profile for Classic Aire Care(618) 213-2618

HVAC contractors ranked #26 to #50

#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 457 ranked HVAC contractors here; the rest are on their profiles.

HVAC contractors in Hazelwood, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26No Problem Heating and Cooling894.8★ (1,113)14 mi
27St. Louis Heating and Air Conditioning894.9★ (487)12 mi
28Hosack Plumbing, Heating & Cooling895.0★ (696)18 mi
29Classic Aire Care885.0★ (1,400)22 mi
30Faszold Heating and Cooling884.9★ (873)16 mi
31Comfort Experts, Inc885.0★ (355)15 mi
32Swiss, LLC884.9★ (924)18 mi
33Vitt Heating & Cooling884.9★ (494)14 mi
34Xcell Williams884.8★ (141)5 mi
35Ozark Mechanical885.0★ (160)11 mi
36Jersey heating and cooling llc885.0★ (163)12 mi
37Martin Jetco Heating & Air Conditioning884.9★ (1,177)20 mi
38Classic Aire Care885.0★ (1,160)24 mi
39Tiger Plumbing, Heating, Air Conditioning, & Electrical Services884.7★ (5,072)22 mi
40Hosack Plumbing, Heating & Cooling874.9★ (153)10 mi
41All American Appliance Service,LLC.874.7★ (2,264)7 mi
42Viviano Heating & Air Conditioning, Inc.874.9★ (890)22 mi
43Aire Serv of St. Louis874.9★ (221)14 mi
44BELOMAN874.9★ (1,500)25 mi
45Raydel Heating and Cooling875.0★ (101)12 mi
46Gene's Appliance AC & Heating874.9★ (207)14 mi
47KirbnJays Heating & Cooling874.9★ (340)17 mi
48Polar Plumbing, Heating & Air Conditioning875.0★ (514)23 mi
49Design Aire Heating & Cooling - St. Louis875.0★ (926)14 mi
50Pruitt Mechanical Services874.9★ (672)21 mi

Also serving Hazelwood

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.

Unranked HVAC contractors serving Hazelwood
BusinessGoogle ratingDistance
Advanced Heating Cooling and Refrigeration5.0★ (2)16 mi
Bechtold Residential Concepts5.0★ (2)15 mi
Brentwood Heating, Cooling & Duct Cleaning5.0★ (2)14 mi
Coleman Heating and Sheet Metal5.0★ (2)4 mi
Dee Heating and Cooling5.0★ (2)11 mi
Elite Heating & Cooling1.0★ (2)8 mi
Elm Heating & Air Conditioning5.0★ (2)16 mi
Golden Touch Hvac of Maryland Heights5.0★ (2)6 mi
HVAC & Duct Clean Co Inc5.0★ (2)16 mi
MRC Services LLC4.7★ (35)3 mi
Nation-Wide Refrigeration Inc5.0★ (2)8 mi
Optimal Heating and Cooling5.0★ (2)9 mi
Renaud Brothers Heating & Cooling5.0★ (609)25 mi
Saint Peters Heating & Air Conditioning5.0★ (2)13 mi
Sears Heating and Air Conditioning2.0★ (2)7 mi
SMART St. Louis5.0★ (2)6 mi
Stellar Heating and Air Conditioning5.0★ (2)6 mi
TC Heating and Cooling5.0★ (2)16 mi
Triple L3.5★ (2)11 mi
Welsch Heating & Cooling4.5★ (162)6 mi

How much do HVAC contractors cost in Hazelwood?

National price ranges in USD, not adjusted for Hazelwood. Each row names its basis and the month we checked it.

How much do HVAC contractors cost in Hazelwood?
JobLowTypicalHighBasisChecked
AC replacement$3,887$5,978$8,073Per system, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026
Furnace replacement$2,823$4,814$6,896Per system, installed; typical range of customer-reported jobs. US national rangeOctober 2026

When to hire an HVAC contractor in Missouri

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.

How we ranked Hazelwood HVAC contractors

We scored 457 Hazelwood HVAC contractors on 8 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. Unknown factors are left out of the score, 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Hazelwood data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

HVAC contractors in Hazelwood: frequently asked questions

Who is the best HVAC contractor in Hazelwood?

By CR Score, the highest-ranked HVAC contractor in Hazelwood, MO is Academy Air Heating, Cooling, Plumbing and Electric with a CR Score of 95/100. It has 4.8★ from 6,727 Google reviews. It is open 24/7. Air Comfort Service, Inc. (#2) and Hoffmann Brothers (#3) follow. We ranked 457 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Hazelwood?

ContractorsRanked ranks 457 HVAC contractors serving Hazelwood, MO. 2 of them are based in Hazelwood; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which HVAC contractors in Hazelwood are open 24/7?

152 ranked HVAC contractors in Hazelwood post 24/7 hours. The highest-ranked are Academy Air Heating, Cooling, Plumbing and Electric (#1), Air Comfort Service, Inc. (#2) and Hoffmann Brothers (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Hazelwood work on weekends?

294 of 457 ranked HVAC contractors post Saturday hours and 247 post Sunday hours. The highest-ranked open Saturdays are Academy Air Heating, Cooling, Plumbing and Electric (#1), Air Comfort Service, Inc. (#2) and Hoffmann Brothers (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Hazelwood?

AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Hazelwood. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Hazelwood HVAC contractors have?

The median Google rating among 457 rated HVAC contractors in Hazelwood is 4.9★, with a median of 22 reviews. Hoffmann Brothers has the most, 10,949 reviews, and ranks #12. We adjust ratings for review count, so a few five-star reviews cannot top the list.

When is the best time to hire an HVAC contractor in Hazelwood?

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.

How does ContractorsRanked rank HVAC contractors?

Each HVAC contractor gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Hazelwood

  1. October 2026: CR Scores recalculated for 457 hvac contractors serving Hazelwood.
  2. October 2026: 1 duplicate listing merged.

More HVAC contractors and Hazelwood pages

Other trades in Hazelwood