63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 768 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 768 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4 Mulberry St, Foristell, MO 63348
Best HVAC Contractors in Troy, MO (2026)
86 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Troy: Hoock's Heating & Cooling, CR Score 63/100; 5.0★ from 768 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Elite Heating and Cooling, posts 24/7 hours; ranked #2 of 86.
- 18
Most-reviewed: Budget Heating, Cooling & Plumbing, 6,200 Google reviews at 4.8★, the most of 86 ranked; ranked #18.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
86 Troy HVAC contractors are ranked here by CR Score, from ten published factors. 26 are open 24/7, 53 open Saturdays and 45 open Sundays, based on posted hours. The median Google rating is 4.9★ across 86 rated businesses.
Top 10 HVAC contractors in Troy at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Hoock's Heating & Cooling | 63 | 5.0★ (768) | O'Fallon, 12 mi away | 24/7 | Overall |
| 2 | Elite Heating and Cooling | 62 | 5.0★ (476) | Wentzville, 13 mi away | 24/7 | Emergencies |
| 3 | ABLE, LLC | 62 | 5.0★ (137) | Troy | Sat · Sun · Evenings | — |
| 4 | Swifty's Heating & Cooling | 62 | 5.0★ (133) | Troy | Sat · Sun | — |
| 5 | AAA Heating & Cooling | 61 | 5.0★ (413) | Wentzville, 14 mi away | 24/7 | — |
| 6 | Stay Cool Climate Control | 61 | 5.0★ (1,068) | O'Fallon, 20 mi away | 24/7 | — |
| 7 | Superior Service | 61 | 5.0★ (2,219) | Dardenne Prairie, 18 mi away | Sat · Sun · Evenings | — |
| 8 | Hosack Plumbing, Heating & Cooling | 61 | 5.0★ (696) | O'Fallon, 19 mi away | 24/7 | — |
| 9 | Renaud Brothers Heating & Cooling | 61 | 5.0★ (609) | Wentzville, 18 mi away | 24/7 | — |
| 10 | Swiss, LLC | 61 | 4.9★ (924) | O'Fallon, 19 mi away | 24/7 | — |
The 86 best HVAC contractors in Troy, ranked
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.
Based in Wentzville, 13 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 476 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 476 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 108 Hamilton Industrial Ct, Wentzville, MO 63385
#3 ABLE, LLC
Based in Troy
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 137 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 137 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 8 AM–4:30 PM
- Address
- 696 S Lincoln Dr, Troy, MO 63379
Based in Troy
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 133 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
Based in Wentzville, 14 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 413 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 413 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 407 E Pearce Blvd Ste A, Wentzville, MO 63385
Based in O'Fallon, 20 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 1,068 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,068 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 407 Sonderen St, O'Fallon, MO 63366
Based in Dardenne Prairie, 18 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 2,219 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 2,219 Google reviews
- Hours
- Mon–Fri 7 AM–8:30 PM · Sat–Sun 8 AM–12 PM
- Address
- 101 Stag Industrial Blvd, Lake St Louis, MO 63367
Based in O'Fallon, 19 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 696 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 696 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 W Pitman St, O'Fallon, MO 63366
Based in Wentzville, 18 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 609 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 609 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3037 Hopewell Rd, Wentzville, MO 63385
#10 Swiss, LLC
Based in O'Fallon, 19 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 924 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 924 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 406 E Wabash St, O'Fallon, MO 63366
Based in O'Fallon, 21 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 873 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 873 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1613 E Terra Ln, O'Fallon, MO 63366
Based in Troy
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.8★ from 86 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 86 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 401 Market Pl Dr, Troy, MO 63379
Based in O'Fallon, 19 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 775 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 775 Google reviews
- Hours
- Mon–Sun 8 AM–9 PM
- Address
- 103 Church St #20, O'Fallon, MO 63366
Based in Warrenton, 15 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.7★ from 390 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 390 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 504 Booneslick Rd, Warrenton, MO 63383
Based in O'Fallon, 20 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 340 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 340 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 674 Whispering Willow Dr, O'Fallon, MO 63366
Based in O'Fallon, 17 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 1,490 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,490 Google reviews
- Hours
- Mon–Fri 7:30 AM–5 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 1520 Kemmar Ct, O'Fallon, MO 63366
Based in Saint Peters, 24 mi away
59/100CR ScoreRanked #17 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
Based in Saint Peters, 23 mi away
59/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 6,200 Google reviews, the most in Troy.
- 4.8★ from 6,200 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 325 Mid Rivers Mall Dr, St Peters, MO 63376
Based in Saint Peters, 23 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 2,039 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.7★ from 2,039 Google reviews
- Hours
- Mon–Fri 7 AM–4 PM · Sat 8 AM–12 PM · Sun 9 AM–5 PM
- Address
- 7428 Mexico Rd, St Peters, MO 63376
Based in O'Fallon, 17 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 112 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 112 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2813 W Terra Ln, O'Fallon, MO 63366
#21 MCF Mechanical
Based in Warrenton, 14 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1009 Armory Rd Suite 108, Warrenton, MO 63383
Based in Saint Peters, 24 mi away
56/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 253 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 253 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5233 State Rte N, Cottleville, MO 63304
Based in Wentzville, 18 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 852 Riske Ln, Wentzville, MO 63385
Based in O'Fallon, 19 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 834 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 834 Google reviews
- Hours
- Mon–Fri 7 AM–4 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 827 W Terra Ln, O'Fallon, MO 63366
#25 Stevenson
Based in Saint Peters, 23 mi away
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 67 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 103 Main St, St Peters, MO 63376
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 86 ranked HVAC contractors here; the rest are on their profiles.
Also serving Troy
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 |
|---|---|---|
| A Precision Air Heating & Cooling | 5.0★ (3) | 19 mi |
| Air Rescue | 5.0★ (1) | 18 mi |
| C & S Heating and Cooling | 4.5★ (2) | 13 mi |
| Chesterfield Service | 1.0★ (1) | In Troy |
| Emergency Mechanical Service | 3.7★ (3) | 19 mi |
| Filter Service of St. Louis | 3.7★ (3) | 25 mi |
| Hazelwoods Heating and Air Conditioning | 5.0★ (2) | 20 mi |
| J and E Heating and Cooling | 4.4★ (5) | 12 mi |
| J&J Home Heating and Cooling | 5.0★ (2) | 13 mi |
| Jaxon Heating & Cooling | 5.0★ (2) | 19 mi |
| Merkel Mechanical Services | 19 mi | |
| Missouri Heating & Cooling | 13 mi | |
| Missouri Heating & Cooling - Troy | 5.0★ (1) | In Troy |
| Missouri Heating and Cooling | In Troy | |
| Mueller Air & Appliance | 13 mi | |
| RK Heating & Cooling | 18 mi | |
| Saint Peters Heating & Air Conditioning | 5.0★ (2) | 24 mi |
| SERVPRO of Lincoln & Warren Counties | 4.6★ (30) | In Troy |
| Veterans HVAC | 5.0★ (2) | In Troy |
| Wilson Brother's Improvements | 5.0★ (1) | 24 mi |
How much do HVAC contractors cost in Troy?
National price ranges in USD, not adjusted for Troy. 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 |
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 Troy HVAC contractors
We scored 86 Troy 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 Troy 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 |
HVAC contractors in Troy: frequently asked questions
Who is the best HVAC contractor in Troy?
By CR Score, the highest-ranked HVAC contractor in Troy, MO is Hoock's Heating & Cooling with a CR Score of 63/100. It has 5.0★ from 768 Google reviews. It is open 24/7. Elite Heating and Cooling (#2) and ABLE, LLC (#3) follow. We ranked 86 HVAC contractors on ten factors, last updated October 22, 2026.
How many HVAC contractors are there in Troy?
ContractorsRanked ranks 86 HVAC contractors serving Troy, MO. 6 of them are based in Troy; 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 Troy are open 24/7?
26 ranked HVAC contractors in Troy post 24/7 hours. The highest-ranked are Hoock's Heating & Cooling (#1), Elite Heating and Cooling (#2) and AAA Heating & Cooling (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which HVAC contractors in Troy work on weekends?
53 of 86 ranked HVAC contractors post Saturday hours and 45 post Sunday hours. The highest-ranked open Saturdays are Hoock's Heating & Cooling (#1), Elite Heating and Cooling (#2) and ABLE, LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does ac replacement cost in Troy?
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 Troy. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Troy HVAC contractors have?
The median Google rating among 86 rated HVAC contractors in Troy is 4.9★, with a median of 26 reviews. Budget Heating, Cooling & Plumbing has the most, 6,200 reviews, and ranks #18. 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 Troy?
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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Troy
- October 2026: CR Scores recalculated for 86 hvac contractors serving Troy.
More HVAC contractors and Troy pages
HVAC contractors near Troy
- HVAC contractors in Wentzville, MO200 ranked
- HVAC contractors in Warrenton, MO85 ranked
- HVAC contractors in Lake Saint Louis, MO248 ranked
- HVAC contractors in O'Fallon, MO293 ranked
- HVAC contractors in Dardenne Prairie, MO304 ranked
- HVAC contractors in Saint Peters, MO340 ranked
- HVAC contractors in Weldon Spring, MO370 ranked
- HVAC contractors in Bowling Green, MO6 ranked
- HVAC contractors in Washington, MO130 ranked
- HVAC contractors in Saint Charles, MO409 ranked
Other trades in Troy
- Roofers in Troy390 ranked
- Plumbers in Troy55 ranked
- Electricians in Troy38 ranked
- General contractors in Troy91 ranked
- Painters in Troy18 ranked
- Landscapers in Troy32 ranked
- Handymen in Troy7 ranked
- Kitchen remodelers in Troy52 ranked
- Bathroom remodelers in Troy52 ranked
- Flooring contractors in Troy40 ranked
- Concrete contractors in Troy56 ranked
- Fence contractors in Troy19 ranked
- Deck builders in Troy47 ranked
- Siding contractors in Troy175 ranked
- Window installers in Troy116 ranked
- Gutter installers in Troy33 ranked
- Insulation contractors in Troy8 ranked
- Solar installers in Troy28 ranked
- Garage door repair companies in Troy16 ranked
- Foundation repair companies in Troy32 ranked
- Tree services in Troy59 ranked
- Masonry contractors in Troy14 ranked
- Water damage restoration companies in Troy136 ranked
- Home builders in Troy160 ranked
- Demolition contractors in Troy10 ranked
- All contractors in Troy