Anybody could advise?

wats the btu for each room? std insulation is class 1, 3/8" armaflex/thermaflex/watever-flex and G23 copper piping. try ask ask for class 0, 1/2" insulation and G22 copper piping. do a search in this forum, it has been mention b4. pricing disparity shd not be more than 100-200 btwn the major players. personally, i will opt for toshiba or mitsubishi.

Advice on?

Sorry did not see the post above. Normally when they "On" You, sitting at the table, they will start to sell you upgraded materials. The standard materials alot of company use is 3/8 Thermaflex and 24gauge copper and 13 mm.

At around $2890 you can get the same thing but upgraded to 1/2" class 1 armaflex, 23gauge copper tubing, 16mm Drainage pipe, 2 trips foc and such.