Hi Kindly help to quote system 5 , my flat is an EA. Which brand has system 5? Toshiba and Daikin? Please also include/state the warranty period, copper and insulation provided, and the possible additional costs required (if any). Is it cheaper to install 1x system 3 and 1x system 2? compared to 1x system 5 . u can also whatsapp me at 91699306. I will need to install it sometime in March 2015 thank u.