by • June 14, 2014 • HVAC & Dehumidification, Seminar NotesComments (2)3626

What’s the Best HVAC Technology today? VRF! (Variable Refrigerant Flow) PART 4 of 4

Phew, the final part in this series!  HUGE thanks to Kristof Irwin for his massive investment of time making this series for my blog.  If you watched all 4 videos you are an official HVAC Geek!

 I’d love to hear your comments about this series, and let me know how easy/hard it is to comment on my new blog below.


Matt Risinger
– Risinger Homes in Austin, TX

Risinger Homes is a custom builder and whole house remodeling contractor that specializes in Architect driven and fine craftsmanship work. We utilize an in-house carpentry staff and the latest building science research to build dramatically more efficient, healthy and durable homes.
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  • rj

    I liked this last installment as it finally gets to the heart of the issue. It would be nice to get some relative assessments of pricing versus conventional high Seer two speed outdoor with variable speed indoor units in the 3 to 5 ton residential range. It would also be interesting to know if the VRF Branch Controllers are needed for the typical residential S models when used with 2 to 4 indoor units. It seems the Branch Controllers add a significant cost that is not directly comparable to conventional systems, even forced air zoning.

  • rj – good questions. First the easy one – branch controllers are not used w S-series equip. As to pricing, there are so many variables that it can be dicey to give a straight answer. VRF can be anywhere from cost neutral (in 1:1 systems) to twice as much (in systems w/ multiple ducted indoor air handlers). That assumes your local market has some minimal level of VRF penetration/sales. Here in Austin a typical VRF bid is 35-50% more. Note that VRF bids typically assumes higher end installation overall, including metal plenums, reducing trunk lines, and high quality diffusers.