What Is VRF

The simplest explanation of VRF is to describe it as a large-scale ductless HVAC system that can perform at a high capacity. The specific design of a VRF system varies based on application. In general, VRF technology provides the ability for multiple indoor units or zones to operate on the same system.

Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. Like ductless minisplits, VRFs use refrigerant as the cooling and heating medium. This refrigerant is conditioned by a single or multiple condensing units (which may be outdoors or indoors, water or air cooled), and is circulated within the building to multiple indoor units. VRF systems, unlike conventional chiller-based systems, allow for varying degrees of cooling in only certain areas, reducing energy consumption.

How does a VRF system work?

VRF systems use heat pumps or heat recovery systems to provide powerful heating and cooling for all indoor and outdoor units without the use of air ducts. With a VRF system, your building will have multiple indoor units utilized by a single outdoor condensing unit, either with a heat pump or heat recovery system.

The technology behind VRF systems is incredibly complex but think of them as an enhanced version of ductless mini-splits. VRF systems use heat pumps or heat recovery systems to provide powerful heating and cooling for all indoor and outdoor units without the use of air ducts.

Advantages of a VRF system

  • Customized heating and cooling – In conventional HVAC systems, you’ll find that the only options are on or off. VRF systems can heat and cool different zones within a building simultaneously and occupants can customize the temperature settings.

  • Flexible design – The product comes in a multitude of types and sizes, which means it can fit any application. You can find sleek and compact equipment, so if you have limited space, this could be an excellent choice.

  • Runs at a low volume – VRF systems are very quiet and won’t disturb building occupants when it’s running, unlike older HVAC technology.

  • Easy installation – Since the units are generally compact and weigh less than equipment with ducts, installation is a breeze! You won’t need to call in the big cranes for rooftop placements either since most can fit in service elevators. We know that this is especially important for businesses that need to resume normal operations quickly.

  • Energy-efficient – These systems are up to 30% more efficient than conventional HVAC systems. They provide energy savings by the varied compressor speed and only delivering the required temperature. Additionally, you won’t experience energy loss through ductwork since it doesn’t require any.

What is difference between VRV and VRF?

VRV stands for “Variable Refrigerant Volume,” while VRF stands for “Variable Refrigerant Flow”. VRF refers to the same basic technology used in those systems manufactured by other companies—Fujitsu, for one, makes some great variable refrigerant flow systems.

What is a 3 pipe VRF system?

Heat Recovery VRF Systems, also known as 3-pipe VRF, allow heating and cooling in all indoor terminal devices simultaneously. Each indoor heat recovery unit works together with the indoor terminal units and respective thermostats in each zone to determine if they require heating or cooling.

Is VRF energy efficient?

VRF technology allows 40 to 50 percent efficiency improvement over standard ASHRAE 90.1 standard RTU units.

A VRF system will provide superior comfort, energy savings, design flexibility, and much more. We understand that upgrading your climate control system is a significant investment, but you don’t need to worry. Our trained team at Techtric Engineering is here to make sure you receive the best possible level of service so you are completely comfortable. We’ll make sure to inspect your property, guide you every step of the way, and help you get the most of your HVAC system.