Yupe, bro weikee correct, inverter copper piping is much thicker as compared to non-inverter. Unless your copper pipe is concealed, if not concealed one, you can change anytime in future. The A/C ppl told me conceal the drain pipe only, copper pipe can hide without conceal (according to some house structure, can hide nicely) as in the case of any problem, easier to troubleshoot.

Regarding the wiring, I didnt know Sharp has secondary control signal until I saw weikee's post, did you ask the sharp fella that secondary one used to control what?

Herm, copper pipe as ground ar? In the case of any gas leakage, then it will be troublesome lor?

Want to ask about the air con setup for 20x70 living and dining hall.
Usually how is the setup?

2hp in living and 1.5hp in dining enough?
Or 1 2.5hp in living only? but can dining get the cool air?

I need some advice here. Appreciate anyone can share their current setup.
Thanks.

wei kee your dry kc and dining area is together? so living hall and dining area is seperated?

maybe all brand inverter aircond can use non-inverter copper pipe in future due to advance technology coming that time, all aircond manufacturers consider this market in future as no need for consumers change thier exist copper pipe. just to my cent...

hmm... i cant afford 3 x 2HP too, dont forget the electricity bill 

Here is my floor plan, smaller than yours, hope 2HP in Living and 1HP in Dry kitchen is sufficient.

wa, 20c pretty cold for me d

install air curtain 

guys, how does the aircond contractor direct the drain pipe from the head unit of the aircond other then pulling a pipe outside to the roof?

The reason is i want to ask some indon to hack the wall for copper laying, so the aircond contractor can just come and lay without hacking.

hi guys, want to ask is 2.5mm wires enuff for connecting between the compressor and blower for 1.5hp? thanks
2.5mm wire is cheaper than 4mm 50% 100m coil is rm55 and rm110

May I know what is the meaning back to back installation? I understand it's aircon installed with the outdoor unit right behind it after the wall. How about install aircon on the wall, the pipe going straight out from the wall to outside then a few feet away to the outdoor unit? Is that considered back to back?

Also, does back-to-back installation requires hacking and cementing back? At first I want to let my contractor settle the aircon cause we want concealed piping (not back-to-back). But he’s slow… so I’m thinking to deduct that work out and only buy air con after we move in and go for back to back. Now my concern is whether there’s hacking and I would need contractor to help me cement/plastering back that area.

Hope my explanation of my scenario is clear. I’m so kucar-kacir now because of the renovation thing! Stress...

You mean does the outdoor unit have enough place to be mounted there?

It’s a double storey so I have an area like balcony (but not accessible unless climb out of window) outside the window. One at the outside area of my master bedroom (let’s call it A) and another at outside of bedroom 3 (let’s call it B). I guess the air cons can sit at the balconies. I wanted to install 3 air con.

1. Master bedroom and lead the pipe to outdoor unit at balcony A.
2. Living room at ground floor but let the outdoor unit at balcony A too.
3. Bedroom 2 and let the outdoor unit at balcony B (balcony B is outside of bedroom 3, next to bedroom 2)

I’ve seen my neighbor putting the air con at (1) & (2) so I guess should be ok. Not sure about (3)

But is this consider as back to back and standard installation? But I know over 10 feet will charge by feet la.

Do I need people to help me cement/plaster back the holes or the air con installer capable to open holes just nice for the piping that I don’t need to do cementing back?

Need some advice here.

I hv been told by a shop at SS2 just now that Panasonic air cond is out of stock due to flood in Thailand. Then he highly recommended me York.

Went to another shop a few doors away and I was told Panasonic air cond is assembled in msia. But It's not recommended due to high consumption of electricity, noisy and it vibrates. Then he highly recommended me Mitsubishi.

Any feedback from current Panasonic user ?

my house using daikin inverter 1.0hp since february 2010
i've service once last june..
then early this month the aircond malfunction..
i've call daikin dealer and they checked my outdoor unit was spoilt..
how many years warranty for the daikin outdoor unit?
and 1 more thing they said it spoilt coz 'kena kilat'
i felt weird because before it spoilt, no raining or thunder etc..
how come it spoilt?
and they wanna charge me araound rm900++ including labour
is it reasonable?