Call Us: Portland and SW Washington: (503) 353-0100: Email Us: Sales, Support & Training | Business Hours: 7:30 AM to 5:00 PM Mon-Fri

Ruud Airflow Properties and Ductwork Design Course


8:00 am - 3:00 pm

This is an in-depth airflow class that covers proper duct design, sizing and layout. Attendees will learn how to identify issues with existing ductwork and how to layout systems correctly, as well as the fundamentals of air properties and CFM/velocity calculations. This is a great course for sales staff, install technicians, and service technicians that will help them recognize areas for ductwork improvement and correct accommodations for a new install.


To sign up for this class, please call (503)-936-3921, or email


  • Some of the cities we serve


  • Blue Hawk
  • NFIB
  • PHCC
  • OHBA
  • BBB

Mar-Hy Distributors 
3850 SE International Way 
Milwaukie, Oregon 97222

Business Hours: 7:30 AM to 5:00 PM
Telephone: 503.353.0100
Text: 503.353.0100
Parts Order Fax: 503.652.1330
Equipment Order Fax: 503.652.4041
Main Office Fax: 503.353.0900