Mr. Cool Heating & Cooling of Alabama is a subdivision of J Square Consultants, Inc., an Engineering, Management and HVAC company located in Huntsville. J Square Consultants, Inc. is also a Disadvantaged Business Enterprise with Janet Warren Johnson as President. Together, Janet Johnson and Charlie started Mr. Cool in 1996.

Charlie, a Native Alabamian, has been in Huntsville since 1960 working for NASA as an aeronautical engineer. After retiring from NASA, and not being one to sit still, he and Janet started J Square in 1989. Doing work for friends and family soon turned into a full time business.

Carlton Parker joined as a partner and General Manager. Carlton, a native Huntsvillian, has been working on home air conditioning systems for over 10 years. Prior to that, he serviced air conditioning systems on Dodge vehicles for 20 years.

Both Charlie and Carlton are Alabama Certified Contractors.

Mr. Cool Heating and Air Conditioning has grown to include 4 trucks and 2 trailers, serving Huntsville, Madison County and the surrounding area.