Just get 1 and test it out

Hello, class or not class means nothing regardless from which country.
More important is the QC.

Height won't really important sometimes.
I assuming that this air cond is for your living hall.
If yes, you need to consider what goal you want, like you want the hall to be freaking cold(but be prepared to pay premium in bills) then you need that size, else a 2HP are more than enough. Set it at 24-26°C with the fan on, it should able to cool down your room under comfort temperature within 30-45 minutes.
Actually anything that are lower than 25°C won't do any good to your health in long term usage.

If everything working properly, it won't simply condenses like yours.
I've been using my Panasonic air conds for the past 10 years also never have such problems before.
Better get the installer to have a check

The installer are right, old pipes can be used back, just the the joints need to put more precaution, a pipe won't easily burst. You need to understand what is the typical pressure load and maximum pressure load in case of blockage. When it gets blocked, there's safeguarding features for the air cond to shut down.

Daikin is York, so don't expect it to be as quiet as panasonic

Do consider the rubber seal condition on your current fridge.
And always have a check on the power consumption on the back plate.
Why people don't disclose the power consumption? It is because most appliances excluding air cond won't really safe power. Like a 10KG top load non inverter air cond only uses 450W while inverter type only uses 420W of power. But the price difference are close to rm200-400.
To have a fridge to save power, letting the compressor unit run lesser are the only way. More important are getting the right size for your usage. Don't just because of the technology and you go and buy blindly.

At least you do do more research
Only air cond does help more, but is still not "superior" like a god, our usage pattern matters.

6 to 12 hours
That's freaking long time usage, you better go with inverter. But for my case, I'm still thinking since my Panasonic already 10 years old, efficiency are not that good despite still bloody quiet comparing to other brands.

You still can't out beat my uncle's house, 7/24, monthly bill rm900-1100

Back to back installation actually will be the best option, you will get lesser lost on transfer.

Better get full inverter since your usage justifies so.

2.5HP non inverter are good enough for living room, unless you need to cold it down to <22°C and long hour of usage.
My living hall are almost same as yours, I only get 2HP since I only set 26°C

This post has been edited by supersound: Jan 4 2016, 11:57 PM

You got it for new or used?
How long never service if used?

Just check is the cooling coil dirty or not, else could be wiring issue.
By setting cold at 19°C and the outdoor unit does not run, either dirty cooling coil(non inverter temperature sensor are attached to the coil), the capacitor failed, lost of gas or wiring issue.
You can only check on the cooling coil's cleanliness as others you need the installer to check.

Made in PRC brand will be better than LG

Depends to where you stay, suggest to look for service centers first.
When I buy electric appliances, I don't see brand first, instead I look for service centers nearby.
Panasonic always in my first place as in Seremban only I got 3 service centers, then follow by Mitsubishi. Other brands I don't bother to see. And remember, avoid Korean brands especially Samseng at all cost, unless you need party at night

Yup, indeed you are right, more premium in the look, more premium in cost, more premium on outage
Some of the service centers I visited, a WM service center that dealing with Japanese and Korean brands, Koreans brand always top the list, while the receptionist always try her best to deny this dirty fact, but the waiting WM to be repaired or change parts still Samseng or LG
As for Air cond service centers, a regular service center that I always go still have Samseng and LG signboard in his shop, but I can't see any of those since he rented another shop to keep them. He willing to do so as the profit margin are very high and fail very fast

If comparing to LG or Samseng, yes, indeed so

With the price and service centers almost same as Panasonic, Why not go for Panasonic? Lesser problems even if the gas runs slightly lower if comparing to Daikin, too much not cold, not enough also the same.