CRS Heating and Air Conditioning, Inc. - Your Trusted HVAC Experts
CRS Heating & Air Conditioning, Inc. is a woman-owned HVAC contractor based in McHenry, Illinois, serving McHenry, McHenry County, Lake County, and surrounding areas. We specialize in residential heating and cooling repair, including furnace and boiler repair, AC repair, and seasonal maintenance, plus light commercial and industrial service. Our team is known for polite, professional technicians, honest recommendations, and fair pricing — no high-pressure sales, just reliable comfort you can count on.
We’ve been trusted in this region for over 30 years — and if you're in or near the areas below, chances are we already serve your neighborhood.
Coverage across McHenry, Lake, Cook, Kane, and DuPage counties.
Areas We Serve by County:
Cook County
Arlington Heights, Barrington, Barrington Hills, Buffalo Grove, Des Plaines, Elk Grove Village, Glencoe, Hoffman Estates, Inverness, Kenilworth, Mount Prospect, Northbrook, Northfield, Palatine, Prospect Heights, Rolling Meadows, Schaumburg, South Barrington, Streamwood, Wheeling, Wilmette, Winnetka
DuPage County
Hanover Park, Roselle
Kane County
Burlington, Carpentersville, East Dundee, Elgin, Gilberts, Hampshire, Pingree Grove, Sleepy Hollow, South Elgin, West Dundee
Lake County
Antioch, Deer Park, Deerfield, Fox Lake, Grayslake, Green Oaks, Gurnee, Hainesville, Hawthorn Woods, Highland Park, Indian Creek, Island Lake, Kildeer, Lake Barrington, Lake Bluff, Lake Forest, Lake Villa, Lake Zurich, Libertyville, Lincolnshire, Lindenhurst, Long Grove, Mundelein, North Barrington, Riverwoods, Round Lake, Round Lake Beach, Round Lake Heights, Round Lake Park, Third Lake, Tower Lakes, Vernon Hills, Volo, Wadsworth, Wauconda
McHenry County
Algonquin, Bull Valley, Cary, Crystal Lake, Fox River Grove, Greenwood, Holiday Hills, Huntley, Johnsburg, Lake in the Hills, Lakemoor, Lakewood, Marengo, McCullom Lake, McHenry, Oakwood Hills, Port Barrington, Prairie Grove, Richmond, Ringwood, Spring Grove, Trout Valley, Union, Wonder Lake, Woodstock