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Emergency HVAC Contractors in Ballwin, MO (2026)

Top 25 of 404 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 25 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

If you smell gas, leave the building now and call your gas utility or 911 from outside.

The short answer

  1. 1

    #1 for emergency heating and cooling in Ballwin: Jerry Kelly Heating & Air Conditioning, open 24/7.

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

Top emergency HVAC contractors in Ballwin at a glance

Top emergency HVAC contractors in Ballwin at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Jerry Kelly Heating & Air Conditioning674.9★ (1,825)Ballwin24/7
2Chesterfield Service664.9★ (4,286)Chesterfield, 6 mi away24/7
3Classic Aire Care665.0★ (1,014)Ballwin24/7
4Hoffmann Brothers664.9★ (5,847)St. Louis, 9 mi away24/7
5Jerry Kelly Heating & Air Conditioning664.9★ (6,530)Saint Peters, 11 mi away24/7
6Classic Aire Care654.9★ (4,820)St. Louis, 10 mi away24/7
7Scott-Lee Company654.9★ (2,175)St. Louis, 9 mi away24/7
8Academy Air Heating, Cooling, Plumbing and Electric644.8★ (6,727)Hazelwood, 15 mi away24/7
9Martin Jetco Heating & Air Conditioning644.9★ (1,177)Eureka, 7 mi away24/7
10B & B Heating & Cooling645.0★ (1,348)Saint Charles, 12 mi away24/7

Call an emergency HVAC contractor in Ballwin now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 25 emergency HVAC contractors in Ballwin, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 404 is on the HVAC contractors page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  2. #2 Chesterfield Service

    Based in Chesterfield, 6 mi away

    66/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 4,286 Google reviews, listed on Google as “HVAC contractor”.

    • 4.9★ from 4,286 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    245 Chesterfield Industrial Blvd, Chesterfield, MO 63005
    View profile for Chesterfield Service(636) 837-1949

  3. #3 Classic Aire Care

    Based in Ballwin

    66/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 1,014 Google reviews, listed on Google as “Heating contractor”.

    • 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

  4. #4 Hoffmann Brothers

    Based in St. Louis, 9 mi away

    66/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 5,847 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  6. #6 Classic Aire Care

    Based in St. Louis, 10 mi away

    65/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.9★ from 4,820 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  7. #7 Scott-Lee Company

    Based in St. Louis, 9 mi away

    65/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.9★ from 2,175 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  14. #14 Classic Aire Care

    Based in Arnold, 14 mi away

    63/100CR Score

    Ranked #14 because of its Google rating and trade focus: 5.0★ from 1,400 Google reviews, listed on Google as “HVAC contractor”.

    • 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

  20. #20 Comfort Experts, Inc

    Based in Saint Peters, 12 mi away

    62/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 355 Google reviews, listed on Google as “HVAC contractor”.

    • 5.0★ from 355 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5501 St Charles St St 101, Cottleville, MO 63304
    View profile for Comfort Experts, Inc(636) 939-9220

  24. #24 Integrity Aire

    Based in Saint Charles, 12 mi away

    61/100CR Score

    Ranked #24 because of its Google rating and trade focus: 5.0★ from 288 Google reviews, listed on Google as “HVAC contractor”.

    • 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

How we ranked emergency HVAC contractors in Ballwin

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

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 from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency HVAC contractors in Ballwin: questions

Which HVAC contractors in Ballwin are open 24/7?

25 on this list post 24/7 hours, including Jerry Kelly Heating & Air Conditioning, Chesterfield Service, Classic Aire Care, Hoffmann Brothers and Jerry Kelly Heating & Air Conditioning.

Who is ranked #1 for emergency heating and cooling in Ballwin, MO?

Jerry Kelly Heating & Air Conditioning is #1, with a CR Score of 67 out of 100 on emergency weights.

How are emergency HVAC contractors in Ballwin ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the HVAC contractor arrives?

If you smell gas, leave the building now and call your gas utility or 911 from outside.

How many emergency HVAC contractors here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Ballwin

  1. October 2026: CR Scores recalculated for 404 hvac contractors serving Ballwin.

More emergency and heating and cooling pages