This article first appeared in Engineered Systems. View the original post in its entirety here. Variable refrigerant flow (VRF) systems were first introduced to the HVAC community in Japan in 1980 as ...

I've a router with 2 VRF. VRF 1 is my network VRF 2 is another network. MY problem is this:1) I can ping the interface on the router (10.1.0.33/30) from a ...

Does anyone have experience with VRF VPN implementations? I'm having some trouble at work getting failover to work, or even getting the VRF implemented properly and could use some help.

This story is about good intentions gone bad during a VRF installation for a new 73,890 square for LEED Platinum middle school that opened in the fall of 2017. The construction cost was $30 million, ...