Yes piping installed 1st and fancoil/compressor to be installed after 2nd coat of paint done.Oh, you mean you have confirm on Mitsubishi and piping done up without installing the fancoil and compressor unit? What piping, G23 and thickness of insulation used?
I'm not sure how thickness of the installed piping has anything to do with whether I'm able to switch brand/model of aircon ... it should be more an issue of fancoil size, yes? Also, there is a cut-out in the false ceiling / L-box in the living room meant for the 18k BTU 2-tick Mitsubishi unit and a cut-out in the L-box in the master bedroom meant for the 9k BTU unit. What I'd like to know is, whether the equivalent BTU Urusara and/or Envi units - should I choose to upgrade from 2-tick Mitsubishi to Daikin Urusara or Envi - will also be able to fit in those cut-outs.