Variable Refrigerant Flow
Variable refrigerant flow (VRF), an HVAC technology that has been commonly used throughout Japan, China and Europe since the 1980s, is one of the fastest growing segments of the U.S. commercial HVAC market. Now, fueled by high energy efficiency, flexibility, on-demand control, and quiet operation, VRF is taking root in the high-end residential market, as well.
VRF systems utilize inverter-driven compressors to modulate the flow heated or cooled refrigerant to individual zones, allowing for precise, quiet, on-demand comfort control. Separate spaces in the same building can be simultaneously heated and cooled, and heat recovery from a cooled space can be repurposed to provide heating in another. Various industry statistics show that VRF systems are 25% to 55% more energy efficient than traditional systems. Large distribution fans, multiple chillers, boilers, piping and pumps are unnecessary in VRF systems, and ductwork is minimized or eliminated altogether, making them a popular choice for retrofit and renovation.
A number of manufacturers offer VRF systems for residential applications here in the U.S. They are growing in popularity, though mostly in upscale homes due to a higher up-front cost. Over the lifetime of the system, however, the initial expense is offset by lower energy bills and greater reliability. Residential VRF units are smaller and quieter than traditional systems, and they are even more energy efficient than their commercial counterparts. Continual improvements in the technology now allow VRF systems to be installed in almost any climate, providing 100% heating capacity at temperatures as low as -13°. The unique requirements of VRF technology make training essential for installing HVAC technicians.
About E.P. Homiek
E.P. Homiek Sheet Metal Fabrication & HVAC Supply, with two convenient locations in Lakewood, NJ and Union, NJ, provides one- to two-day turnaround on all residential and light commercial ductwork, as well as one- to two-hour emergency fabrication service, rapid delivery, and competitive prices. HVAC parts, supplies, and equipment lines include Goodman, Honeywell, Bryant, Bradford White, Crown Boiler, Daikin, Weil-McLain, Sea Breeze, Generac, Fantech, ZM, A.O. Smith, Hart & Cooley, Malco, Mueller, and many more.
