Founded in 1988, United CoolAir manufactures 1 to 100 ton “All-Indoor” Modular HVAC systems for commercial & industrial cooling, as well as 100% outside air applications. Built-to-order horizontal and vertical systems are sold as air-cooled, water-cooled, chilled water, and heat pump models with a wide range of options to meet almost any application. United CoolAir also produces a variety of portable, temporary environmental control HVAC units under the name Therm~Air.