INVERTER.... we recommend only Panasonic...

other brands... no comment, especially the other J brands

this Panasonic INVERTER s Series... is very powerful..

Electricity Savings.. case to case
I have a recent customer bought 2 sets within a month..  He told me the bill drop from rm240 to rm120  (We are not Panasonic Dealer, and I dont used to Lie)

If ur Apartment is not that Big.. then i think 2.0 hp above is a bit excessive (Terlebih)... let say if the apartment is 900 square ft +, then 1.5 hp INVERTER Panasonic also enough (Case to Case  Basis)
Up to 3.5 hp..... all AC in Malaysia require only SINGLE Phase.. not 3 phase  (Bermakna hanya 4.0 hp, atau ke atas perlukan 3 phase electricity)
*** Personally.. i have been blasting my 2013 Panasonic Inverter AC for 13 hours a day .. until now already 3 years..  1.0 hp can blast up the Master Bedroom of a Standard Double Storey house of USJ..  thats Impressive !