Is it expensive for Hitachi ex-pro series DC frequency conversion 5 PCs to drive two ras- 125hrn5q central air conditioner 20,000 yuan?

It's a little expensive. It is recommended to choose Haier's unit, which is more cost-effective than this. The indoor unit is a brand-new super-fan with low noise, and you can also choose the original return air panel from the manufacturer. Wifi control is factory standard and can be controlled remotely. This machine has a good reputation. I suggest you think about it.