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Glossary of HVAC Terms

SEER Rating: The higher the SEER rating, the more efficient 
the unit operates & the more you will save on cooling bills!


Contact Us:

Office: 11509 W 121st Place, Cedar Lake, IN 46303-9767
Phone:(219) 374-9830

24-HOUR SERVICE: (708) 758-0588

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Williamson Heating & Cooling Serving the South Chicagoland Suburbs & Northwest Indiana

Williamson Heating & Cooling Serving the South Chicagoland Suburbs and Northwest IndianaCook County, Illinois Cities/Towns:

Chicago Heights, Oak Forest,  Orland Park, Palatine, Palos Heights, Palos Hills, Palos Park, Park Forest, Sauk Village,  Tinley Park,  and Worth.

Will County, Illinois Cities/Towns:

Beecher, Bolingbrook, Braidwood, Crest Hill, Crete, Frankfort, Joliet, Lakewood Shores, Lockport, Manhattan, Mokena, Monee, New Lenox, Plainfield, Romeoville, Shorewood, Steger and University Park.

Kankakee County, Illinois Cities/Towns:

Aroma Park, Bonfield, Bourbonnais, Bradley, Buckingham, Essex, Grant Park, Herscher, Hopkins Park, Irwin, Kankakee, Manteno, Momence, Reddick, St. Anne, Sun River Terrace and Union Hill.

Lake County, Indiana Cities/Towns:

Belshaw, Brunswick, Klaasville, Lake Ridge, Leroy, Lake Dalecarlia, Lakes of the Four Seasons, Shelby, Palmer, Ross, Cedar Lake, Dyer , Griffith, Highland, Lowell, Merrillville, Munster, New Chicago, Schererville, Schneider, St. John and Winfield.

If you fall within these areas and would like an estimate, or if you are unsure whether you fall within our limits, please contact us today for a free estimate.