St. Charles, IL
21 HVAC contractors in St. Charles, Illinois, with Google ratings, hours and websites where the business has them.
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Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.
HVAC Contractors
McNally's Heating and Cooling is a family-owned HVAC company serving Chicagoland for over 50 years with offices in St. Charles and Crystal Lake. The company provides furnace and air conditioning repair, installation, and maintenance; heat pump services; ductless mini-split systems; and air quality solutions including duct cleaning and air purification. Emergency service is available 24/7.
Furnace repairFurnace installationAC repair
St. Charles, IL4.9(2987)Open nowWebsite
HVAC Contractors
Service Experts West Chicago, formerly Comfort Masters Service Experts, has been providing top-quality HVAC and plumbing maintenance, installation, and repair throughout the Northern Illinois area since 1969. We also specialize in furnaces, air conditioners, water heaters, tankless water heaters, boilers, and humidifiers. We help Northern Illinois residents take their homes and businesses to the next level. Our goal is to be the best and biggest as we serve the Northern Illinois market.
St. Charles, IL4.8(2856)Open nowWebsite
HVAC Contractors
One Hour Heating & Air Conditioning serves St. Charles and surrounding Illinois communities with HVAC repair, installation, and maintenance backed by a 2-year satisfaction guarantee. Rated 4.9 out of 5 from nearly 2,000 reviews, the team offers 24/7 emergency service, flexible financing, and expertise in heating, air conditioning, ductwork, and indoor air quality.
AC repair and installationHeating repair and installationHeat pump service
St. Charles, IL4.9(1952)Open nowWebsite
HVAC Contractors
TDH Mechanical Heating and Cooling Contractors specializes in AC, furnace, boiler, ductless, and heat pump repair in Saint Charles and Batavia. All work is performed by qualified technicians.
AC repairAC replacementfurnace repair
St. Charles, IL4.8(358)Closed nowWebsite
HVAC Contractors
Service Plus is a commercial HVAC contractor based in Aurora and serving Chicago and the surrounding area. Services include HVAC maintenance, HVAC repair, HVAC installation, and customized maintenance plans for office buildings, retail, multi-family housing, hospitals, schools, and industrial facilities. Performance monitoring and energy efficiency services are available.
HVAC maintenanceHVAC repairHVAC installation
St. Charles, IL5.0(197)Closed nowWebsite
HVAC Contractors
Cool Operator Heating and Cooling provides residential HVAC services in St. Charles, Illinois and surrounding areas. Services include furnace and air conditioner repair, installation, and maintenance, plus indoor air quality solutions.
furnace repairAC repairfurnace installation
St. Charles, IL4.3(145)Open nowWebsite
HVAC Contractors
Performance Heating & Air is an American Standard Customer Care Dealer providing heating and air conditioning services throughout St. Charles, Illinois. The company specializes in HVAC system installation, emergency repair services, air quality evaluation and diagnosis, energy efficiency consultation, and maintenance. Flexible financing options and local rebates are available to qualified customers.
HVAC installationEmergency repairAir quality evaluation
St. Charles, IL4.8(44)Open nowWebsite
HVAC Contractors
St. Charles, IL5.0(9)Website
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St. Charles, IL5.0(7)Website
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St. Charles, IL5.0(4)Website
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St. Charles, IL5.0(2)Website
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St. Charles, IL5.0(2)Website
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St. Charles, IL
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St. Charles, IL
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St. Charles, IL
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St. Charles, IL
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St. Charles, IL
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St. Charles, IL
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St. Charles, IL
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St. Charles, ILWebsite
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St. Charles, IL
21 of 21 shown. Recommended businesses first, then businesses that have claimed their profile, then Verified ones, then by Google rating and review count. Use Sort to see highest rated first.
Top rated
Ranked by Google rating, then review count. Only businesses rated 4.5 or higher with 5+ Google reviews qualify.
5.0197 Google reviewsVerified
HVAC maintenance · HVAC repair · HVAC installation
5.09 Google reviewsVerified
5.07 Google reviewsVerified
4.92,987 Google reviewsVerified
Furnace repair · Furnace installation · AC repair
4.91,952 Google reviewsVerified
AC repair and installation · Heating repair and installation · Heat pump service
4.82,856 Google reviewsVerified
See every hvac contractors in St. Charles sorted by rating · Best of St. Charles across every trade
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21 HVAC contractors serve St. Charles, IL. 11 are rated 4.5 or higher on Google and 6 have a perfect 5.0. 13 have a website. Most common services: AC repair, furnace repair, AC installation, ductless systems, furnace installation, heat pumps….
How Google categorizes hvac contractors in St. Charles
Primary and secondary categories from each business’s Google Business Profile. Tap one to filter the list.
Services hvac contractors in St. Charles list on Google
Service names as each business entered them on its Google Business Profile, with how many businesses list each one.
What reviewers mention
knowledgeable staff (933) · courteous staff (440) · thoroughness (291) · furnace repair (267) · knowledgeable technician (222) · clear explanations (207) · furnace maintenance (203) · humidifier installation (151) · duct cleaning (125) · furnace installation (125) · dryer vent cleaning (77) · informative staff (73)
Topics Google extracted from customer reviews of hvac contractors in St. Charles, with the number of reviews that mention each.
Sponsored
Up to 2 businesses can hold a sponsored spot in St. Charles, IL. A sponsored business sits above the regular results with a Sponsored tag; it never changes how other businesses are ranked.
Page One Partner Research
| HVAC Contractors | St. Charles | IL | U.S. |
|---|---|---|---|
| Average Google rating (10+ reviews) | 4.79 | 4.74 | 4.69 |
| Median Google reviews | 95 | 34 | 25 |
| Reviews for the top quarter | 757+ | 137+ | 108+ |
| Have a website | 65% | 61% | 60.6% |
Businesses listed in our directory, not every business in the market. Updated November 2026. HVAC Contractors industry report · What is a good rating for HVAC contractors? · Best cities for HVAC contractors
From Page One Partner Research
Quick answers
Names and Google ratings, straight from each business's profile.
21 HVAC contractors serve St. Charles, IL. Highest rated (10+ reviews): Service Plus Heating & Cooling (Verified, rated 5.0 on Google from 197 reviews), McNally's Heating and Cooling (Verified, rated 4.9 on Google from 2987 reviews) and One Hour Heating & Air Conditioning (Verified, rated 4.9 on Google from 1952 reviews), plus 18 more.
21 HVAC contractors serve St. Charles, Illinois. 11 are rated 4.5 or higher on Google and 6 have a perfect 5.0. 13 have a website. Most common services: AC repair, furnace repair, AC installation, ductless systems, furnace installation, heat pumps…. ZIP codes covered: 60174, 60175.
McNally's Heating and Cooling (2,987 reviews, rated 4.9), Comfort Masters Service Experts (2,856 reviews, rated 4.8) and One Hour Heating & Air Conditioning (1,952 reviews, rated 4.9). Review counts are read from each business's Google Business Profile.
7 HVAC contractors in St. Charles, IL publish hours on Google. 6 are open on Saturdays (McNally's Heating and Cooling, Comfort Masters Service Experts, One Hour Heating & Air Conditioning and Service Plus Heating & Cooling and 2 more) and 5 on Sundays (McNally's Heating and Cooling, Comfort Masters Service Experts, One Hour Heating & Air Conditioning and Cool Operator Heating and Cooling Inc. and 1 more). Use the Open now filter above to see who is open right now.
Google lists them under Air conditioning contractor (7), Heating contractor (7), HVAC contractor (7), Furnace repair service (6), Air conditioning repair service (5) and Air duct cleaning service (4). A business can carry more than one category, so the counts overlap.
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