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Emergency HVAC Contractors in Troy, MO (2026)

Top 50 of 86 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 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 Troy: Hoock's Heating & Cooling, 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 Troy at a glance

Top emergency HVAC contractors in Troy at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Hoock's Heating & Cooling915.0★ (768)O'Fallon, 12 mi away24/7
2Elite Heating and Cooling905.0★ (476)Wentzville, 13 mi away24/7
3Brush's Heating & Cooling Co., Inc.904.8★ (86)Troy24/7
4AAA Heating & Cooling905.0★ (413)Wentzville, 14 mi away24/7
5Stay Cool Climate Control895.0★ (1,068)O'Fallon, 20 mi away24/7
6Hosack Plumbing, Heating & Cooling895.0★ (696)O'Fallon, 19 mi away24/7
7Renaud Brothers Heating & Cooling895.0★ (609)Wentzville, 18 mi away24/7
8Swiss, LLC894.9★ (924)O'Fallon, 19 mi away24/7
9Faszold Heating and Cooling884.9★ (873)O'Fallon, 21 mi away24/7
10Schraer Heating & Air Conditioning874.7★ (390)Warrenton, 15 mi away24/7

Call an emergency HVAC contractor in Troy 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 50 emergency HVAC contractors in Troy, 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 86 is on the HVAC contractors page.

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

  8. #8 Swiss, LLC

    Based in O'Fallon, 19 mi away

    89/100CR Score

    Ranked #8 because of its Google rating and availability: 4.9★ from 924 Google reviews, open 24/7.

    • 4.9★ from 924 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    406 E Wabash St, O'Fallon, MO 63366
    View profile for Swiss, LLC(636) 542-8739

  14. #14 MCF Mechanical

    Based in Warrenton, 14 mi away

    84/100CR Score

    Ranked #14 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.

    • 5.0★ from 22 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1009 Armory Rd Suite 108, Warrenton, MO 63383
    View profile for MCF Mechanical(636) 459-5382

  15. #15 Air Alliance Team

    Based in Saint Peters, 24 mi away

    84/100CR Score

    Ranked #15 because of its Google rating and availability: 4.7★ from 253 Google reviews, open 24/7.

    • 4.7★ from 253 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    5233 State Rte N, Cottleville, MO 63304
    View profile for Air Alliance Team(636) 224-1880

  17. #17 Stevenson

    Based in Saint Peters, 23 mi away

    84/100CR Score

    Ranked #17 because of its Google rating and availability: 4.9★ from 67 Google reviews, open 24/7.

    • 4.9★ from 67 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    103 Main St, St Peters, MO 63376
    View profile for Stevenson(636) 387-1032

Top 50 of 86 HVAC contractors by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

HVAC contractors in Troy, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Emergency Mechanical Service783.7★ (3)19 mi
27Canada HVAC LLC765.0★ (23)17 mi
28Tune Heating and Cooling LLC754.9★ (73)22 mi
29J and E Heating and Cooling724.4★ (5)12 mi
30George Littleton's Plumbing & Heating703.7★ (3)In Troy
31A Precision Air Heating & Cooling695.0★ (3)19 mi
32Filter Service of St. Louis683.7★ (3)25 mi
33Michelson's Plumbing & Heating654.0★ (5)15 mi
34ABLE, LLC655.0★ (137)In Troy
35Swifty's Heating & Cooling655.0★ (133)In Troy
36Superior Service645.0★ (2,219)18 mi
37Hoff Heating & AC634.9★ (1,490)17 mi
38Budget Heating, Cooling & Plumbing634.8★ (6,200)23 mi
39Design Aire Heating and Cooling625.0★ (775)19 mi
40Reifel Heating and Cooling624.9★ (41)In Troy
41First Choice Heating, Cooling & Plumbing624.9★ (484)In Troy
42Peters Heating and Air Conditioning624.6★ (65)In Troy
43Chowning Heating and Cooling614.8★ (399)15 mi
44AAA Appliance Sales, Repair and Parts Center614.7★ (2,039)23 mi
45Survant Heating & Air Conditioning614.7★ (203)11 mi
46AAA Home Services614.7★ (834)19 mi
47Goldkamp Heating and Cooling | Lake St. Louis615.0★ (230)18 mi
48ILLY HVAC615.0★ (154)16 mi
49Crabtree Heating & Cooling594.7★ (24)6 mi
50Johnson Heating and Cooling594.7★ (88)14 mi

How we ranked emergency HVAC contractors in Troy

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency HVAC contractors in Troy: questions

Which HVAC contractors in Troy are open 24/7?

25 on this list post 24/7 hours, including Hoock's Heating & Cooling, Elite Heating and Cooling, Brush's Heating & Cooling Co., Inc., AAA Heating & Cooling and Stay Cool Climate Control.

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

Hoock's Heating & Cooling is #1, with a CR Score of 91 out of 100 on emergency weights.

How are emergency HVAC contractors in Troy ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. 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 Troy

  1. October 2026: CR Scores recalculated for 86 hvac contractors serving Troy.

More emergency and heating and cooling pages