I wanna ask a technical question, currently my 2nd floor living hall using panasonic 1.5hp non inverter aircond and i wanted to change to 2hp non inverter do i need to do hacking to change new piping?
One of my room using inverter 1hp and i wanted change to 1.5 inverter those pipe need to change too?
Im trying to avoid hacking and such cause is quite hassle to clean up.

Thanks for you reply. Will call you soon.