Why choose entek? Entek designs, installs, and services climate controlled systems as its primary work. ENTEK always works in the spirit of wanting to solve problems, serve people and community, and do the right thing whether its indoor air quality check for a home or designing a customized heating, ventilation and cooling system for a business.Why choose ententek corporation? ENTEK Corporation has been installing of Ductless Heating and Cooling Systems for over 20 years. This is long before utility companies began offering attractive rebates and industry organizations created the special designations of “Master Installer”.Is entek a member of wqa? We are members of the national Water Quality Association, Texas WQA and Florida WQA. Check out the Entek® advantages! Full product line for city water, drinking water and well water.