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Variable refrigerant flow (VRF), also known as variable refrigerant volume (VRV), is an HVAC technology invented by Daikin Industries, Ltd. in 1982. [1] Similar to ductless mini-split systems, VRFs use refrigerant as the primary cooling and heating medium, and are usually less complex than conventional chiller -based systems.

VRF stands for variable refrigerant flow, which goes a surprisingly long way toward describing how this system uses refrigerant for both air conditioning and heating. In a nutshell, VRF is a ductless, large-scale system for HVAC that performs at a high capacity.

outdoor heat recovery or heat pump unit to create a VRF (variable refrigerant flow) system that uses HFC-410A refrigerant. V33B indoor units are designed for indoor installation only. Refer to the Product Specification bulletin (EHB) for the . proper use of …

Jun 26, 2017 · Here, Aaron Sharp, owner of Sharp Air Conditioning and Heating, Mesa, Arizona, completes the installation of a residential VRF system. Variable refrigerant flow (VRF) technology is relatively new to the U.S., yet it has quickly become a …

Feb 18, 2025 · Variable Refrigerant Flow (VRF) systems are revolutionizing the commercial HVAC landscape through their remarkable efficiency and flexibility. These advanced systems adjust refrigerant flow based on real-time data from sensors in different zones, which enhances energy efficiency and delivers customized comfort.

Feb 11, 2025 · Variable Refrigerant Flow systems are an advanced form of HVAC technology that offers precise temperature control for individual zones in a building. A VRF system consists of one or more outdoor condensing units connected to multiple indoor units …

Lennox VRF and Lennox Mini-Split products are similar in appearance to each other. Refer to the unit’s model number to determine if the unit is a VRF (V) or Mini-Split (M) unit.

VRF systems promise a more energy-efficient strategy (estimates range from 11% to 17% less energy compared to conventional units) at a somewhat higher cost. The modern VRF technology uses an inverter-driven scroll compressor and permits as many as 48 or more indoor units to operate from one outdoor unit (varies from manufacturer to manufacturer).

VRF systems use variable-speed compressors that adjust their speed based on the cooling or heating demand, which eliminates the noise of the system alternating on and off. These systems are created with sound-absorbing materials and low-noise fans that also decrease noise levels.