Repair or Buy Now and Save

$25 OFF ANY FURNACE REPAIR!

Have a NEW Furnace or A/C installed now and get $100 OFF YOUR INSTALLATION!

Enter To WIN A FREE FURNACE
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

Furnace Cleaning & Inspection Discount Offer
Trane Furnaces & Air Conditioners
Broan Heating & Cooling Systems

Our History

Our History

Founded in 19__ by Don Williamson, Williamson Heating & Cooling Services started as a two-man heating and air conditioning residential sub-contractor. Over the years, Don’s reputation as a skilled, dependable and honest HVAC contractor attracted the attention of Chicagoland and Northwest Indiana local residents and business owners. Through word of mouth his service became popular amongst home contractors, developers, builders, home owners and businesses. Today, Williamson Heating & Cooling Services represents the needs of many commercial and residential HVAC customers throughout the Northwest Indiana and surrounding areas.