The HRAI Residential Air System Design Technician (RASDT) Designation was established in partnership with Natural Resources Canada (NRCan). The designation is awarded to all individuals who hold current certification for the following four HRAI training programs: Residential Mechanical Ventilation Installation, Residential Heat Loss & Heat Gain Calculations, Residential Air System Design and Residential Commissioning. 

The HRAI Residential Hydronics Design Technician (RHDT) Designation was established in partnership with Natural Resources Canada (NRCan). The designation is awarded to those who hold current certification for the following four HRAI training programs: Residential Mechanical Ventilation Installation, Residential Heat Loss & Heat Gain Calculations, Residential Radiant Hydronics Design and Residential Commissioning.

Please note that the completion of the Residential Integrated Combo System course will be required to extend the designations beyond December 21, 2021.  We anticipate that the revised Combo System Course will be available by 2020.

On the HRAI Certification Listing RASDT or RHDT will appear following the name of each individual who has achieved the designation to date.