Designer Learning Explore HRAI designation pathways and technical design courses for HVAC professionals. Choose what you're looking for. Designations Follow clear HRAI designation pathways and see required courses. Explore Section Specialty Design Courses Focused residential design topics to deepen your expertise. Explore Section Small Commercial Courses Training for small commercial air systems and heat loss / heat gain calculations. Explore Section Designation Pathways Choose a pathway to see the prerequisite and required courses. Residential Air System Design Technician (RASDT) Prerequisite: Online Basic Principles of Residential Air Systems Required Courses: Residential Heat Loss & Heat Gain Residential Ventilation using Section 9.32 of the Building Code Residential Air System Design Residential Commissioning Residential Ventilation Design Technician (RVDT) Prerequisite: Online Basic Principles of Residential Ventilation Required Courses: Residential Ventilation using Section 9.32 of the Building Code Residential Ventilation using CSA-F326-M91 (R2019) HRV/ERV Installation & Balancing Fundamentals Depressurization Testing of Residential Systems Residential Hydronic Design Technician (RHDT) Prerequisite: Online Basic Principles of Residential Ventilation Required Courses: Residential Heat Loss & Heat Gain Residential Ventilation using Section 9.32 of the Building Code Residential Radiant Hydronics Residential Commissioning Specialty Design Courses Focused residential design topics to deepen your expertise. Residential Whole Home Heat Loss Heat Gain Calculations Learn industry-standard methods to accurately calculate heating and cooling loads for residential buildings. View Course Indoor Air Quality (IAQ) for Residential Explore IAQ fundamentals, ventilation strategies, and practical solutions for healthier homes. View Course Small Commercial Courses Training for small commercial air systems and heat loss / heat gain calculations. Small Commercial Air System Design Learn the principles and procedures for designing efficent air systems for small commercial buildings. View Course Small Commercial Heat Loss Heat Gain Calculations Learn accurate heat loss and heat gain calculation methods for small commercial applications. View Course
