VRV, which stands for Variable Refrigerant Volume, is a type of HVAC (Heating, Ventilation, and Air Conditioning) system that offers energy-efficient and flexible climate control for commercial and large residential buildings. VRV systems are manufactured by Daikin, a leading air conditioning company, but the term is sometimes used generically to refer to similar systems produced by other manufacturers (such as VRF or Variable Refrigerant Flow systems).