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Modeling Variable Refrigerant Flow (VRF) Systems

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In this training session the instructor uses a live example to take you through the steps for:

  • Modeling air-cooled and water-cooled VRF systems
  • Differences in ducting ventilation air to VRF indoor units or supplying ventilation independently
  • Simultaneous heating & cooling operation controls configurations
  • Modulating system performance based on piping length
  • Evaluating performance & energy results in VistaPro
Note: This training course is intended for users already familiar with Apache, ApHVAC, and VistaPro applications within the Virtual Environment.


Your Instructor


Megan Tosh
Megan Tosh

Megan Tosh is a Product Manager at IES, based in Portland, Oregon. Megan has her Bachelors and Masters of Science in Mechanical Engineering from the University of Central Florida. She is a professionally licensed engineer in the State of Florida and is an ASHRAE certified Building Energy Modeling Professional (BEMP). Megan joined IES in 2013 to provide training and technical support to North American software users. She specializes in modeling mechanical systems and frequently leads Advanced ApacheHVAC training courses offered by IES.


Class Curriculum


  Modeling Variable Refrigerant Flow (VRF) Systems
Available in days
days after you enroll

Frequently Asked Questions


When does the course start and finish?
The course starts now and never ends! It is a completely self-paced online course - you decide when you start and when you finish.
How long do I have access to the course?
After enrolling, you have unlimited access to this course for as long as you like - across the devices you own.

Get started now!