VRF (Variant Refrigerant Flow) System – Such as Mitsubishi, Daikin or equivalent.

This system is innovative and popular in Japan and Europe. Applying this method, a central condensing unit is equipped with variable speed compressors, which regulate their operation according to the home utilization.
When usage is low, the compressor will rotate more slowly and consume less electricity. When the consumption level increases, the compressor will spin faster in order to meet the demand and will consume more electricity.

Method Advantages

• Savings on the size of main electrical service at home.
• Saving on electrical consumption – This is the most economical method of all.
• Smaller interior units and saving on physical space in the home.
• High technological level.

Method Disadvantages

• Very expensive – About 15% more expensive than the chiller system, depending on the manufacturer.
• There are not enough installers who are proficient with this method – an average installer who did not undergo training by the companies marketing the unit, is unable to successfully install the system. Thus, if you have decided to install such a system in your home, be sure to obtain a list of installers recommended by the engineer or marketing companies and get a quote from them only.