Dedicated Outdoor Air System Units (DOAS)


Program Scope

This program applies to 50 and 60 Hz production models of DOAS Units, as defined in Section 1.2, with a Moisture Removal Capacity (MRC) less than 324 lb of moisture/hr.

Certified Ratings

The following certification program ratings are verified by test:

  • Moisture Removal Capacity at standard rating condition A, lb of moisture/h; and
  • Integrated Seasonal Moisture Removal Efficiency (ISMRE2), lb of moisture/kWh.
  • Integrated Seasonal Moisture Removal Efficiency -70 (ISMRE2-70), for units with Supplementary Heat, lb of moisture/kWh.
  • Exhaust air transfer ratio, when using option 1 of the Standard, %.

The rules and procedures for obtaining and maintaining certification are detailed in the Resources section above. The specific Standard listed above details the technical requirements for rating and publishing your product performance, the AHRI General Operations Manual (OM) details the program operational rules that are generic to all of AHRI’s certification programs and lastly, the Product-specific Operations Manual provides the operational rules that are specific to this program along with the required documents and fees. Please ensure that you are familiar with the latest rules and procedures for this program.