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ContractorsRanked

Best HVAC Contractors in Waterloo, IL (2026)

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

The short answer

  1. 1

    Best overall in Waterloo: Classic Aire Care, CR Score 91/100; 5.0★ from 1,400 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Rhymes Heating and Cooling, posts 24/7 hours; ranked #2 of 232.

  3. 15

    Most-reviewed: Hoffmann Brothers, 10,949 Google reviews at 4.9★, the most of 232 ranked; ranked #15.

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

232 Waterloo HVAC contractors are ranked here by CR Score, from 8 published factors. 82 are open 24/7, 146 open Saturdays and 128 open Sundays, based on posted hours. The median Google rating is 4.9★ across 232 rated businesses.

Top 10 HVAC contractors in Waterloo at a glance

Top 10 HVAC contractors in Waterloo at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Classic Aire Care915.0★ (1,400)Arnold, 14 mi away24/7Overall
2Rhymes Heating and Cooling905.0★ (1,430)St. Louis, 16 mi away24/7Emergencies
3BELOMAN904.9★ (1,500)Belleville, 14 mi away24/7—
4Scott-Lee Company894.9★ (2,175)St. Louis, 19 mi away24/7—
5Academy Air Heating, Cooling, Plumbing and Electric894.8★ (875)Barnhart, 12 mi away24/7—
6Classic Aire Care895.0★ (1,160)Fairview Heights, 21 mi away24/7—
7Perfect Air894.9★ (807)Festus, 15 mi away24/7—
8Dole Heating & Air Conditioning884.9★ (1,401)St. Louis, 19 mi away24/7—
9Lunk's Heating & Cooling885.0★ (29)Waterloo24/7—
10Home Heating & Cooling885.0★ (586)O'Fallon, 21 mi away24/7—

The 232 best HVAC contractors in Waterloo, 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.

  1. Ranked #1 in Waterloo

    #1 Classic Aire Care

    Based in Arnold, 14 mi away

    91/100CR Score

    Ranked #1 because of its Google rating and availability: 5.0★ from 1,400 Google reviews, open 24/7.

    • 5.0★ from 1,400 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2104 Tenbrook Rd, Arnold, MO 63010
    View profile for Classic Aire Care(636) 220-5859

  3. #3 BELOMAN

    Based in Belleville, 14 mi away

    90/100CR Score

    Ranked #3 because of its Google rating and availability: 4.9★ from 1,500 Google reviews, open 24/7.

    • 4.9★ from 1,500 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5909 Cool Sports Rd, Belleville, IL 62223
    View profile for BELOMAN(618) 235-6626

  4. #4 Scott-Lee Company

    Based in St. Louis, 19 mi away

    89/100CR Score

    Ranked #4 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

  6. #6 Classic Aire Care

    Based in Fairview Heights, 21 mi away

    89/100CR Score

    Ranked #6 because of its Google rating and availability: 5.0★ from 1,160 Google reviews, open 24/7.

    • 5.0★ from 1,160 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    13 Executive Dr Suite 15, Fairview Heights, IL 62208
    View profile for Classic Aire Care(618) 213-2690

  7. #7 Perfect Air

    Based in Festus, 15 mi away

    89/100CR Score

    Ranked #7 because of its Google rating and availability: 4.9★ from 807 Google reviews, open 24/7.

    • 4.9★ from 807 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    503 Warne St, Festus, MO 63028
    View profile for Perfect Air(636) 937-2578

  15. #15 Hoffmann Brothers

    Based in Brentwood, 22 mi away

    87/100CR Score

    Ranked #15 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

  24. #24 Meyer Heating and Air

    Based in St. Louis, 16 mi away

    85/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.9★ from 1,051 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 1,051 Google reviews
    Hours
    Mon–Sun 8 AM–5 PM
    Address
    11134 Lindbergh Business Ct Suite D, St. Louis, MO 63123
    View profile for Meyer Heating and Air(314) 845-1929

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

HVAC contractors in Waterloo, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Central Air Heating and Cooling854.8★ (497)23 mi
27Weis Comfort Systems854.8★ (152)18 mi
28Advanced HVAC Solutions855.0★ (27)In Waterloo
29The Heating & Cooling Guy located in Mascoutah Illinois. Service call $59.854.9★ (169)22 mi
30Climate Bullies Heating and Cooling844.9★ (36)15 mi
31Hosack Plumbing, Heating & Cooling844.9★ (153)23 mi
32Archway Cooling & Heating Inc844.9★ (318)15 mi
33Froggy's Heating and Air, LLC845.0★ (20)14 mi
34Heritage Heating & Cooling845.0★ (581)22 mi
35JLM Heating and Air Conditioning845.0★ (151)15 mi
36Kirkwood Heating & Air Conditioning834.7★ (135)20 mi
37Anytime | IL834.9★ (230)15 mi
38Hoffmann Brothers834.9★ (5,170)20 mi
39American Heating & Air Conditioning835.0★ (40)21 mi
40Inman Heating & Cooling834.1★ (14)8 mi
41Marciante Diversified Heating and Cooling834.6★ (41)16 mi
42Polar Plumbing, Heating & Air Conditioning835.0★ (197)17 mi
43Rathgeber Heating Co835.0★ (18)13 mi
44Hudson's Heating & Cooling825.0★ (12)12 mi
45Air Pro Heating & Cooling825.0★ (5)12 mi
46DC Heating & Cooling825.0★ (29)22 mi
47Hely Heating and Air Conditioning Co.824.7★ (41)20 mi
48Harster Heating & Air Conditioning824.5★ (77)18 mi
49Honor Heating, Air and Plumbing Inc.824.9★ (40)18 mi
50T-Will Fix It824.9★ (195)20 mi

Also serving Waterloo

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 Waterloo
BusinessGoogle ratingDistance
Belleville Services4.7★ (49)17 mi
Countryside Heating & Cooling4.0★ (1)14 mi
Dee Heating and Cooling5.0★ (2)23 mi
Disaster Pros4.9★ (169)In Waterloo
Ductz of the Metro East5.0★ (1)9 mi
Glosemeyer Mechanical4.2★ (42)12 mi
Hirsch Plumbing Inc4.0★ (20)In Waterloo
JBR Heating and Cooling5.0★ (20)23 mi
Level 9 Heating, Cooling, and Plumbing5.0★ (1)16 mi
LJ Heating and Cooling LLC5.0★ (1)18 mi
Midwest Radiant Heat Inc3.0★ (2)18 mi
New Systems Air Conditioning & Heating5.0★ (1)17 mi
Niksic Air Conditioning & Heating4.6★ (22)18 mi
Nilos, LLC5.0★ (2)22 mi
OMC Heating and Cooling5.0★ (1)19 mi
Pierce Heating and Air5.0★ (10)20 mi
St Louis Heating and Cooling4.7★ (15)21 mi
TC Heating and Cooling5.0★ (2)19 mi
Total Comfort Group1.0★ (1)16 mi
WSM Inc. S.I.5.0★ (2)20 mi

How much do HVAC contractors cost in Waterloo?

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

How much do HVAC contractors cost in Waterloo?
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 Illinois

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.

How we ranked Waterloo HVAC contractors

We scored 232 Waterloo 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 Waterloo 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 Waterloo: frequently asked questions

Who is the best HVAC contractor in Waterloo?

By CR Score, the highest-ranked HVAC contractor in Waterloo, IL is Classic Aire Care with a CR Score of 91/100. It has 5.0★ from 1,400 Google reviews. It is open 24/7. Rhymes Heating and Cooling (#2) and BELOMAN (#3) follow. We ranked 232 HVAC contractors on 8 factors, last updated October 22, 2026.

How many HVAC contractors are there in Waterloo?

ContractorsRanked ranks 232 HVAC contractors serving Waterloo, IL. 2 of them are based in Waterloo; 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 Waterloo are open 24/7?

82 ranked HVAC contractors in Waterloo post 24/7 hours. The highest-ranked are Classic Aire Care (#1), Rhymes Heating and Cooling (#2) and BELOMAN (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which HVAC contractors in Waterloo work on weekends?

146 of 232 ranked HVAC contractors post Saturday hours and 128 post Sunday hours. The highest-ranked open Saturdays are Classic Aire Care (#1), Rhymes Heating and Cooling (#2) and BELOMAN (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does ac replacement cost in Waterloo?

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 Waterloo. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Waterloo HVAC contractors have?

The median Google rating among 232 rated HVAC contractors in Waterloo is 4.9★, with a median of 22 reviews. Hoffmann Brothers has the most, 10,949 reviews, and ranks #15. 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 Waterloo?

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.

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 Waterloo

  1. October 2026: CR Scores recalculated for 232 hvac contractors serving Waterloo.
  2. October 2026: 1 duplicate listing merged.

More HVAC contractors and Waterloo pages

Other trades in Waterloo