National CS-1803KH x CU-C18BKN5 Room Air Conditioner | AC Split Dinding 

‪@TheeXtremeFanEnthusiast‬ 's favorite air conditioner ever!
This National CS-1803KH 18,000 BTU/h 2hp room air conditioner just found in the pharmacy. Great build quality and awesome engineering. This thing still in service, which I'm quite happy with that.
The outdoor unit that used is CU-C18BKN5, although it's being similar to the CU-1803KH outdoor unit, with little differences.