Hi Tim Need your advise and quotation for my 5-room resale flat in Jurong West. There is an existing system 3 unit installed in master bedroom,one common room and study room. I don't really need it for my study room, instead need to have one installed in another common room and thinking of the following options. 1) Keep the existing system 3 unit. Change all the covers and do servicing. Move the indoor unit installed in the study room to another common room with the new piping. 2) Keep the existing system 3 unit. Change all the covers and do servicing. Install a new system 1 unit (non-inverter)in the other common room. Prefer Mitsubishi or Daikin. 2) Change a new system 3 (inverter) unit and install it in the master bedroom and the two common rooms. Prefer Mitsubishi or Daikin. Thank You.