What is a dedicated outdoor air system?

New standards for energy efficiency for commercial heating and cooling systems are driving innovation in the HVAC industry.

As a result, new HVAC systems help businesses better maintain indoor temperature levels and improve air quality while lowering their carbon footprint. In a push for better energy efficiency, manufacturers provide commercial building owners with configured rooftop units known as dedicated outdoor air systems (DOAS). A dedicated outdoor air system is an HVAC unit installed outdoors and is typically used in conjunction with other HVAC equipment. Dedicated outdoor air systems bring fresh outdoor air into your indoor space independently from cooling or heating efforts. Addressing air conditioning and ventilation separately can save HVAC fan energy while enhancing indoor air quality. The type of appliances used with a dedicated outdoor air system can vary depending on building type and brand name. In some instances, a chilled water system is applied to supply your DOAS cooling with cold water. Other dedicated outdoor air system models may use digital scroll compressors, an electric expansion valve, and a microchannel condenser coil to cool, heat, and dehumidify your indoor air. While dedicated outdoor air systems may help businesses to comply with the new commercial HVAC energy efficiency standards, multiple other benefits come with the system. They improve indoor air quality by eliminating contaminants from the outside air before delivering it into your indoor space. The systems are effective dehumidifiers, and they help prevent problems related to moisture, such as sick building syndrome. Decoupling ventilation from air cooling and heating also results in energy savings.


ductless multi split