Assemble aircon system from scratch

[jick.cejoco]

Sirs, baka may nakagawa na or may idea with regard this inquiry. Assuming wala pong existing aircon ang vehicle, is it practical to assemble this from scratch? Yun tipong bibilhin separately ang mga major parts then pa assemble/install sa aircon shop or technician? Kung may nakagawa na po or may idea, kindly share po what parts to buy OR is it better/wiser to buy surplus aircon assemblies na lang?

Thanks in advance for any inputs.

it is smarter to purchase original equipment for your car. they have already been designed, fitted and proven to work than experimenting and modifying. it will be easiest if you buy the whole system from a dead donor car.