normally AC are using 1/4" and 3/8" copper piping. there are two type of thickness for both. which ic 0.51mm & 0.56mm

typically, MOST installer will choose 0.51 due to its cost. I do believe developer will choose this compared to latter one. York has manufactured Inverter for quite sometime. but it used R22 gas which is known as NeoVerter(singlesplit) & Transverter(multisplit). It is recently, everyone is talkign about Inverter Inverter due to Panasonic`s bombardment of ads everywhere. Now, most of the inverters are using R410a due to montrael protocol. As for this gas, it is wiser to choose copper pipe with thickness of 0.56mm

when you mentioned about NORMAL piping, I do not get what you actually meant. Piping in the unit or for installation?

cheers

this is only rule of thumb... base of human perception.

it is consider to be the comfort zone base on trial and error.

there`s no specific answer for this question of yours.

P/S 25C is consider to be cold for me while it is hot for my wife. We argue about temperature setting everynight before going to sleep

in addition, this also depends on their sales target... as home appliances company.. panasonic, york, samsung, LG etc.. have this year end sales target.. when you reach it, you will have few percentage rebate plus holiday trip...

say...
1) panasonic needs my sales for 1million and i`ve reach it...
2) samsung`s target is 1million as well, but I reach 900k..

so, certainly i will push samsung one even though pana is better.. just to hit target for more benefit provided the margin is the same laa

excuse me?? panasonice has a super plant in shah alam manufacturing air cond...

http://electronics.zibb.com/profile/matsus.../40000/26311432

in fact its the only factory that has inhouse stadium whereby bon odori is held annually

obviously the dealer is in coconut shell

York is made in msia.. its compresser might source from hitachi, copeland or matsushita

i used to be in HVAC line as marketing engineer in one of the brand stated above... cannot say laa...

let me tell you my observation as marketing engineer la...

panasonic target tech savvy customer... e.g. brand recognition, ioniser etc IAQ features...

York focussed on cooling mainly + service oriented....

try compare after sales service for york n panasonic....

while mitsubishi, daikin, samsung is almost same direction as panasonic...

P/S this issue happens to me also when I want to buy specific brand... but the dealer keep wanting me to buy other... only i found out that most electric shop`s supplier(panasonic, LG, samsung etc) give sales target rebat for them and say they have hit target for say LG(100k rebate 5%) so they wont fight sales for LG and will fight for other brand say(current target is 90k and another 10k to hit target 5%) :/

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Added on May 8, 2011, 6:12 pmin the nutshell, if you want price competitiveness, good after sales & service, not particular about miscelaneous marketing gimmicks.... York would be an ideal choice.....

This post has been edited by Awakened_Angel: May 8 2011, 06:12 PM

in order to have great cooling, you need to have fast moving air... which leads to fast spinning fan

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Added on May 9, 2011, 8:59 amthere`s a silence mode in York`s remote....

I do concur that the outlook of york is rather unattractive compared to LG art cool...

P/S i am using inverter by panasonic in my bedroom and it aint cool at all and need to be reservice once every 6 month... my other room are using York and it is as cool as it gets

This post has been edited by Awakened_Angel: May 9 2011, 08:59 AM

this is what happens to the crap sales.. I once experience this.... I bought a LCD TV...

and they send me a sample unit instead of new one... I scold the tauke and ask them to resend a new one... next day... they wrap the sample unit with plastic in hope I dont recognise... I scold again the tauke.. "aiyaa.. sorry boss... itu bangla tak tau laa....I suruh dia ambil baru, dia ambil lama..."

then again 3rd time.... send sample unit again.... then the worker go out and call his boss without knowing that my wife is outside also drying clothes... he called his boss "boss... aiyaa... dia tau jugaklaa itu sample unit.. apa macam sekarang?? aku pun hairan apa macam dia tau??"

my wife alert me and I hold the sample unit while he deliver a new unit for the last time else I want refund...

this type of con man businessman....

P/S how I know its a sample unit? got a minor scratch at the corner and serial number ma....

A simple calculation is by multiplying your room area by 60(less heated room) and 80(for heated room) and u get btu/hr and match the number with ac spec

Or u can get an engineer to get better number... How many ppl in from, no of windows, computer, living/bedroom/living room etc