Variable refrigerant flow (VRF) systems are really no different than more traditional HVAC systems when it comes down to good installation practices. If a system is not installed correctly, then it doesn’t work properly, and it will not reach its maximum energy-efficiency potential. VRF systems require the same level of care and quality work as ducted HVAC systems, maybe even slightly more.
Dominic Freschi, owner, Freschi Service Experts, Antioch, California, has been in business since 1980. His company was purchased by Service Experts in 1996 and, since then, he has expanded to include VRF, among other things. VRF systems, while extremely energy efficient and beneficial in certain applications, have a weak link, said Freschi.