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 ...

Water-source variable refrigerant flow (VRF)/variable refrigerant volume (VRV) systems are compact, flexible systems designed to offer many of the same benefits of air-source VRF/VRV systems. These ...

VALLEY COTTAGE, N.Y. – Variable Refrigerant Flow (VRF) Systems is a mature heating, ventilation and air conditioning (HVAC) technology which simultaneously heat and cool area through extracting heat ...

Several factors are driving the popularity of this versatile technology in the selection of HVAC for student housing retrofits and group-up projects. Student comfort, system management and sound ...

As Qatar moves towards environment friendly and energy efficient air conditioning units, a new technology is becoming popular in the country. Variable refrigerant flow or volume (VRV/VRF) air ...