Addison is a leading manufacturer of HVAC cooling and heating equipment for commercial and industrial applications, specializing in 100% dedicated outdoor air systems. While taking outside air from ambient temperatures to neutral conditions, they are able to deliver a wide range of options to satisfy most building requirements. Additionally, Addison offers a variety of energy efficient options to lower annual operating costs.

Please visit for a closer look at the new DOAS PR series with cutting edge technology or inquire at for more information and selection assistance.

Packaged Rooftop Units and Split Systems

  • 100% Outside Air DX Systems
  • Packaged DX
    (Water cooled and chilled water custom units)
  • Direct and Indirect Fired Air Handlers
  • Air Turnover Units
  • Unit Heaters and Duct Furnaces
  • Infrared Heaters

The New Addison 100% Outside Air DOAS Series