Retrofit Installer Technician: Building Shell

Dates: August 30 - September 2, 2021

Meets: Monday thru Thursday (See Session Tab for Details)

Location: Montana Weatherization Training Center - Bozeman

Registration Fee: $395.00
MT WAP Registration: $0.00

The Retrofit Installer Technician: Building Shell is an entry-level course that provides an overview of weatherization measures and standards, as well as residential building performance practices including building science basics and the house as a system. The course also covers basic health and safety issues, heating systems and mechanical codes.

This course is the first in a two-part series that covers pressure diagnostics, air-sealing, insulation installs, moisture management, window and door installation, roof vent installation and more.

The course follows the Department of Energy's standardized curriculum for Weatherization Installer/Technician Fundamentals and has been modified to be consistent with the National Renewable Energy Laboratory's (NREL) Job Task Analysis for the Retrofit Installer Technician.

Upon completion of the class, students will be familiar with the tasks performed by a Retrofit Installer Technician and possess the knowledge, skills and abilities required to do these tasks.

The structure of the course includes lecture, discuss and practical demonstrations in lab situations.

Montana Weatherization Network members may take this course at no cost. Use the MT WAP Registration option to register with a $0 fee.

For questions, contact the Training Center at, or 406-586-0070.

Please visit the Montana Weatherization Training Center's website at

Fee:   $395.00

optional: Fee Breakdown

Fee Breakdown

Registration Fee$ 395.00
MT WAP Registration$ 0.00

Montana Weatherization Training Center - Bozeman

751 Osterman Drive
Suite 101
Bozeman, MT 59715

Chris Dorsi

Chris manages curriculum development and technical writing projects for the Montana Weatherization Training Center, along with delivering classroom and field training for both professionals and technicians. He's spent the last 40 years developing best practices for the housing industry, including publishing respected textbooks and technical curricula, developing training programs, and operating private construction organizations. Chris holds certifications from the Building Performance Institute as a Building Analyst, Heating Professional, Envelope Professional, and Healthy Home Evaluator. He's certified to proctor exams for all these specialties. Chris is the co-author of "Residential Energy: Cost Savings and Comfort for Existing Buildings," the "Homeowner's Handbook to Energy Efficiency," and other respected titles on sustainable design and energy-efficient construction. He's the founder of Habitat X, a nationwide professional development platform.

Aaron Mugaas

Aaron brings deep and relevant experience to the team, with decades of service to the weatherization industry as both a crew member and auditor. He’s also spent time in private industry as a house builder and home inspector. Aaron’s training includes degrees in Biology, and study in Land Resources and Environmental Sciences. His focus at the Training Center is on health and safety, building science, hands-on training of practical skills.
Date Day Time Location
08/30/2021Monday1 PM to 5 PM Montana Weatherization Training Center - Bozeman
08/31/2021Tuesday8:30 AM to 5 PM Montana Weatherization Training Center - Bozeman
09/01/2021Wednesday8:30 AM to 5 PM Montana Weatherization Training Center - Bozeman
09/02/2021Thursday8:30 AM to 2:30 PM Montana Weatherization Training Center - Bozeman
09/06/2021Monday8:15 AM to 3 PM Montana Weatherization Training Center - Bozeman
09/13/2021Monday8:15 AM to 3 PM Montana Weatherization Training Center - Bozeman
09/20/2021Monday8:15 AM to 3 PM Montana Weatherization Training Center - Bozeman

This course has 24 contact hours and can qualify as 24 continuing education units (CEU) toward Home Energy.


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