Argh! So hard to decide....... inverter or non-inverter?? Does it really work? Heard that the difference is not that much.

Also, how many horse power aircond do I need?

My room sizes are about:
1) 294 sq ft (master bedroom)
2) 217 sq ft (2nd bedroom)
3) 171 sq ft (3rd bedroom)
4) 500 sq ft (living room + dining area)

According to this website:

http://www.energystar.gov/index.cfm?c=room..._properly_sized

So I need 7000 BTU/h for Master, about 6000 BTU/h for second and third bedrooms, and 12000 BTU/h for the living + dining area.

According to Panasonic aircond specs, a 1.5 HP aircond spec to 12,000 BTU/h already:

http://www.panasonic.com.my/wps/portal/hom...KHCUPC12MKH15HP

So does that mean I don't need to get higher than 1.5 HP aircond?

gennn, I'm planning to install non-inverter in my living room because it will only be switched on once in a while when guests are around. Therefore, I don't foresee the room will get cool enough for the inverter to have an effect (slow down compressor).

Apparently, Panasonic will have a sale on their airconds now at year end because new model coming out in the new year.

I bought the standard wireless versions (non-ioniser, non-inverter):

1.5HP CU-PC12MKH - RM1060
2.0HP CU-PC18MKH - RM1720

Excludes installation.