Hi guys, need to check if anyone bought/ installed/ using the Haier Inverter Aircon?

I’m planning to install 4 units of different size/HP of the Aircon (1HP, 1.5HP, 2HP, 2.5HP) for non crucial area of the house (Guest room, family area, etc…)

So my new house came equipped with “standard copper piping and power cables” already.
So when approaching for installation quotation, some contractor, wireman and even Aircon guy told me that Haier’s “Wire” is different from Daikin and Panasonic.
So according to them, Daikin and Panasonic uses 4 wires, and Haier uses a range of 4 to 9 different wires which is “non-standard”

So hoping to hear of anyone experienced this kind of situation before.

Really thought I wanna save some money getting and trying Haier inverter AC

So in your opinions, all inverter and non inverter AC are all the same? All “standard wires”?
Seriously confusing wei…

New update... so apparently, 1.5HP and below uses the "standard wire" and anything else above that including wall and cassette for Haier uses "non standard wire"
The 3HP cassette Haier Inverter need 8 or 9 wires, sweat....