RESNET HERS Raters will earn 12 RESNET Professional Development (PD) credits by completing this course. No studying, no exams. Watch at your own pace. Access 24x7 anywhere you access the internet - even on your phone! You'll learn how to size, choose, install, test and document the system to comply with the latest ASHRAE 62.2 Standard. It's everything you need to know, as well as the forms and spreadsheets you'll need in the field.