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McNally's Heating and Cooling

Heating & Air Conditioning

St. Charles, ILUnclaimed profile

Information checked August 9, 2026

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About McNally's Heating and Cooling

McNally's Heating and Cooling is a family-owned HVAC company serving homeowners and businesses in Chicagoland and Northern Illinois. The company provides heating and furnace services, air conditioning repair and installation, HVAC installation and maintenance, air duct cleaning, air purifying, and emergency HVAC service available 24/7. The company has offices in St. Charles and Crystal Lake and serves customers in Kane, DuPage, McHenry, and Cook counties. Its services include residential, commercial, and new-construction HVAC installation. McNally's states that it services all major heating brands and works with all makes and models for air conditioning. McNally's identifies itself as a three-time Angie’s List Super Service Award winner and says it has been voted Best of the Fox for heating and air conditioning companies in Kane County multiple years.

Services from McNally's Heating and Cooling

Air conditioning repair, maintenance, and installation

HVAC repair and maintenance

HVAC installation

Air duct cleaning and air purifying

Heating and furnace services

McNally's Heating and Cooling highlights

Family-owned HVAC company
24/7 emergency HVAC service
Residential and commercial services
New-construction HVAC installation
Three-time Angie’s List award winner
Best of the Fox recipient

Frequently asked questions about McNally's Heating and Cooling

What HVAC services does McNally's provide?

The company provides heating and furnace services, air conditioning repair, maintenance and installation, HVAC installation and maintenance, air duct cleaning, air purifying, and emergency HVAC service.

Does McNally's offer emergency HVAC service?

Yes. The website states that McNally's provides 24/7 emergency HVAC service.

Does McNally's serve residential and commercial customers?

Yes. The website identifies residential and commercial HVAC services, including installation for both homeowners and businesses.

Where is McNally's Heating and Cooling located?

The company lists an office at 3491 Swenson Ave, St. Charles, Illinois 60174. It also lists a second office at 150 S Virginia Rd #4, Crystal Lake, Illinois 60014.

What warranty information does McNally's publish?

The website states that repairs include a 2-year limited warranty and installations include a 10-year limited labor warranty.

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