About Us

Square-A Mechanical was started in 2000 as a small specialty mechanical contractor. The founder, Kevin Williams, has 37 years of mechanical expertise. 

We specialize in steam, hot water and radiant heating as well as chilled water, cooling towers, and domestic hot water systems. We are also one of the few contractors that repair and service vintage steam and hot water heating systems in and around Denver.

Owner: Kevin Williams

Bachelors Degree in Mechanical Engineering Technology


  • ICC National Masters Licence
  • City of Denver Steam and Hot Water
  • Class A Refrigeration
  • Class A H&V Supervisor 

Numerous Certificates from Major Manufacturers