System Design for Retrofit

System Design for Retrofit

Design Smarter. Retrofit Better. Deliver Proven Comfort.

If you’re replacing an HVACR system in an existing home, you need more than experience—you need a process. ACCA’s System Design for Retrofit course teaches you how to apply the same proven methods from Manuals J®, S®, T®, and D® that you use in new construction to retrofit projects—so you can deliver predictable, high-performance results every time.

About the course

Most HVACR work isn't in brand-new homes — it's replacements in existing houses. But those houses already have ductwork, grilles, and registers that may not have been designed correctly in the first place.

How do you take the same design math you'd use for new construction and apply it to a house that's already there?

From performing load calculations to verifying duct system performance using Manual D®’s friction rate worksheet, this course is packed with actionable guidance that helps you do the job right the first time — and prove it.

What will I learn?

This course shows you how to apply ACCA's design methodology to retrofit projects so you can plan, prove, and deliver a system that actually works:

By the end of this course, you’ll know how to:

  • Perform accurate load calculations (Manual J®) to size the system properly.
  • Select equipment the right way (Manual S®), not just “same as the old one.”
  • Evaluate and optimize grilles and registers (Manual T®).
  • Check ductwork with the Manual D® friction rate worksheet — and confirm your design with real measurements.
  • Commission the retrofit so you can prove performance to your customer.

Who should attend?

If you've ever wondered how to measure proper airflow—or prove your retrofit delivers the comfort you promised—this course is for you.

This course is designed for HVACR professionals who work on system replacements in existing homes and want to ensure long-term comfort and efficiency. Including: Service technicians, maintenance technicians, field service supervisors, comfort advisors, production managers, operations managers, and sales managers.

Upcoming Classes

October 21-22

8:30 AM – 4:30 PM

Mitsubishi Electric Trane HVAC US LLC
8018 Sunport Drive, Suite 209
Orlando, FL 32809

Register Now

Early bird pricing ends October 3

Early Bird Pricing

Member Status Price
Non-member $1050
Bronze member $900
Silver member $800
Gold member $700

Meet the Instructor

Ed Janowiak

Ed Janowiak
ACCA Manager of HVAC Design Education

Each course is taught by Ed Janowiak, ACCA’s manager of HVAC design education. With a focus on real-world application, these courses help enhance your technical skills, improve system efficiency, and ensure compliance with industry standards.

Janowiak comes to ACCA with over 35 years of HVACR experience, and more than 20 years, delivering technical topics from his time as the technical director at Eastern Heating and Cooling Council in Mt. Laurel, New Jersey. Janowiak has over 15 years of practical experience in the field as a service manager, technician, and installer—working at various companies, and as the owner and president of Bramante Energy, Inc.