24/7 Emergency · St. Charles
Emergency HVAC Companies in St. Charles, MO — Available 24/7
When you can't wait, these hvac companies in St. Charles offer emergency response. Call now — most respond within the hour.
As of May 2026, RatingsNearMe ranks 7 hvac companies in St. Charles, MO by verified customer ratings and review volume. The highest-rated is Air Comfort Service Inc. with a 5.0-star rating from 1,191 verified reviews. Also in the top tier: Vitt Heating & Cooling and Premier Heating & Cooling Inc. The average rating across all listed hvac companies in St. Charles is 4.9 stars from 535 reviews per business on average.
HVAC service in St. Charles: $75–$150/hr for repairs; full system replacement $4,000–$12,000 depending on size and efficiency.
Rankings updated May 17, 2026 · Scored by ratings (35%), review volume (30%), sentiment (20%), completeness (10%), availability (5%) · Not paid placement.
Local Market Snapshot
7
Businesses listed
4.9★
Avg rating
535
Avg reviews
May 17, 2026
Last updated
Top Rated HVAC Companies
Air Comfort Service Inc.
1286 Jungermann Rd suite e, St Peters, MO 63376, USA
Vitt Heating & Cooling
522 Bailey Rd, Crystal City, MO 63019, USA
Premier Heating & Cooling Inc
179 Hughes Ln, St Charles, MO 63301, USA
HVAC Companies Rankings in St. Charles, MO
| # | Business | Rating | Reviews |
|---|---|---|---|
| #1 | Air Comfort Service Inc.1286 Jungermann Rd suite e, St Peters, MO 63376, USA | 5.0★ | 1,191 |
| #2 | Vitt Heating & Cooling522 Bailey Rd, Crystal City, MO 63019, USA | 4.8★ | 1,330 |
| #3 | Premier Heating & Cooling Inc179 Hughes Ln, St Charles, MO 63301, USA | 4.9★ | 446 |
| #4 | Integrity Aire1382 Charlestown Industrial Dr, St Charles, MO 63303, USA | 5.0★ | 317 |
| #5 | American Home Heating & Air Conditioning537 Boone's Lick Rd, St Charles, MO 63301, USA | 5.0★ | 39 |
| #6 | Heating & Air Conditioning1831 Scherer Pkwy, St Charles, MO 63303, USA | 5.0★ | 14 |
| #7 | Arco Distributing and Heating & Cooling2000 Exchange Dr, St Charles, MO 63303, USA | 4.7★ | 405 |
Ranked by verified ratings & review volume · Data from Google Business listings · Updated May 2026
All HVAC Companies in St. Charles
Integrity Aire
1382 Charlestown Industrial Dr, St Charles, MO 63303, USA
American Home Heating & Air Conditioning
537 Boone's Lick Rd, St Charles, MO 63301, USA
Heating & Air Conditioning
1831 Scherer Pkwy, St Charles, MO 63303, USA
Arco Distributing and Heating & Cooling
2000 Exchange Dr, St Charles, MO 63303, USA
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Frequently Asked Questions — HVAC Companies in St. Charles
How do I find the best hvac companies in St. Charles?
Look for businesses with 4.5+ stars, 50+ verified reviews, proper licensing and insurance, and transparent pricing. The top-ranked hvac companies in St. Charles on this page are scored by our algorithm that weighs ratings, review count, and profile completeness.
Are hvac companies in St. Charles licensed and insured?
Licensing requirements vary by trade and state. For most home service contractors, MO requires both a state license and liability insurance. Always ask any contractor for proof of current insurance and a copy of their license number before work begins — you can verify most licenses on your state licensing board's website.
How much do hvac companies charge in St. Charles, MO?
Prices vary by scope, materials, and contractor experience. Use the free quote form on this page to request estimates from multiple local pros simultaneously. Getting 3+ quotes is the single most effective way to avoid overpaying.
What should I look for when hiring a hvac companies in St. Charles?
Verify licensing and insurance, read recent reviews on multiple platforms, ask for a written estimate before work starts, confirm they pull permits when required, and check references from recent local projects. Featured businesses on this page are ranked by verified ratings and review quality.
How are the hvac companies on this page ranked?
Rankings use a transparent algorithm: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Featured Partner listings have paid for enhanced visibility but must still earn their position through real customer reviews — sponsored listings are clearly labeled.
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How Rankings Work on This Page
Every hvac companies on RatingsNearMe is scored transparently: star rating (35%), review volume (30%), customer sentiment (20%), profile completeness (10%), and availability (5%). Businesses labeled exclusive or premium are Featured Partners — they have paid for enhanced visibility but must still rank through real customer reviews. We cap sponsored boosts so bad businesses can never buy the top spot.
Editorial notice: Ratings are based on publicly available data from Google Business listings. Consumers should independently verify licensing, insurance, and credentials before hiring any service provider. Last updated: May 17, 2026.
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