United CoolAir manufactures 2 to 100 ton "All-Indoor" Modular HVAC Solution systems for Commercial & Industrial Cooling as we ... ll as 100% Outside Air applications. Horizontal and vertical systems are available as Air-Cooled, Water-Cooled, and Heat Pump models with additional options to meet almost any application. The use of resealable refrigerant fittings makes the systems ideal for retrofit and renovation projects with lower total installed costs than many conventional replacements. read more