First of all, let’s look at two pictures and analyze the difference between vrv and multi-connection from the pictures.

1. Number of connected indoor units

Multiple connection: The outdoor unit seems to have a maximum of 5 units, and can only connect to 3-4 indoor units. There seems to be no multi-link connection with more than 5 horses. VRV air conditioning system: The maximum single outdoor unit is 22 hp, which can be combined to form the largest 66 hp modular unit, which can connect up to 66 indoor units.

2. The connection method between copper pipes and indoor machines

Multiple connection: if there are several indoor machines, several copper pipes are separated from the outdoor machines, and then each copper pipe Corresponding to an indoor unit, the distribution of refrigerant in this connection method is uneven, and the cooling and heating effects will be different. The closer the indoor unit is to the outdoor unit, the better the effect, and the farther away the effect is, the worse it will be. The single pipe length of multi-line copper pipe is 25 meters, and the maximum total pipe length is 70 meters. If it is exceeded, it cannot be installed. Since there are many solder joints on the copper pipes coming out of the outdoor machine, there will be a greater risk of failure in the future.

3. Types of indoor units

Multi-connection: It seems that multi-connections are generally connected to ordinary air duct machines, and there are fewer options for internal units. (Daikin multi-split units have no choice, all are sold in bundles with packaged units) VRV air conditioning system: can be connected to all types of indoor units, including wall-mounted, ducted units, built-in units, patio units, and floor-standing units. Yes, you can mix and match freely.

4. Price

MFP: It is a low-end machine with a cheap price, so we often see Daikin and Gree in the market with similar prices. In fact, they are Daikin’s MRF and Gree’s. vrv price comparison. VRV air conditioning system: mid-to-high-end machines are more expensive than multi-split systems. VRV models vary, and prices are also different. In fact, you can tell the difference between multi-connection and VRV by looking at the price. Let's go and see which are multi-connection and which VRV.

Extended content:

VRV (Variable Refrigerant Volume) air conditioning system - variable refrigerant flow multi-connected air conditioning system (referred to as multi-connected), by controlling the refrigerant cycle of the compressor The amount and flow of refrigerant entering the indoor heat exchanger is a direct evaporative refrigeration system that meets the indoor cooling and heating load requirements in a timely manner. This system was developed and launched by Daikin Industrial Co., Ltd. in Japan in 1982. "VRV" has also become the registered trademark of Daikin variable refrigerant flow multi-connection system. Therefore, the industry now also uses the term "VRF" (Variable Refrigerant Flow) to refer to similar systems. system to differentiate.