Addison is a leading supplier of HVAC cooling and dehumidification equipment for commercial and industrial applications with extensive experience in treating ventilation air. We specialize in 100% dedicated outdoor air systems and are able to deliver a wide range of options to satisfy ventilation for most building requirements. We have developed the most flexible products lines that can be configured to offer our customers' semi-custom packaged heating and cooling systems to meet any need. Additionally, Addison offers a variety of energy efficient options to lower annual operating costs.