United CoolAir is a company that manufactures "all-indoor" modular HVAC solution systems for commercial and industrial cooling as well as outside air applications. Horizontal and vertical systems are available as air-cooled, water-cooled, and heat pump models with additional options aiming to meet almost any application. The company uses resealable refrigerant fittings aiming to make its systems ideal for retrofit and renovation projects with lower total installed costs than many conventional replacements.