[chunlianghere]

u most welcome!

[mikezuper]

chunlianghere wrote:

Coefficient Of Performance

the higher the number, the better efficient and better performance.

http://els.nea.gov.sg/mels/aircon.asp

Thanks very much bro for all the reply!

Will update here again on my new aircon

[chunlianghere]

waiting to c yr new aircon!

[TaLLKeV]

hey mypj_88, which gain city did you go to? i went to 2 different ones, 1 at amk and the other at marina. can't stand the attittude of the guy at amk. had a more pleasant experience at marina. spent 1.5hr there bombarding the guy with questions and asking for quotes.

[mypj_88]

TaLLKeV wrote:

hey mypj_88, which gain city did you go to? i went to 2 different ones, 1 at amk and the other at marina. can't stand the attittude of the guy at amk. had a more pleasant experience at marina. spent 1.5hr there bombarding the guy with questions and asking for quotes.

causeway pt. i was asking for pros & cons for inverter & non-inverter. he asked me how much budget i have.

[thesingingbard]

hee... i wanna state that i'm not recommending any company per se, just relating GC does a better job than my previous free-lance contractor. Who knows? Maybe most air/con companies do a better job than him.

however i would like to say something about Inverter aircon here...

The inverter actually refers to an inverter circuitry in the compressor unit that inverts the 50Hz A/C into a D/C. By doing that the rotational speed of the compressor can thus be regulated.

The inverter air/con is like having a 5-spd ceiling fan. During initial power up, it goes to spd-5 to cool the room to a designated temperature than it goes to a lower speed, say spd-1~2 to maintain the temperature.

for a non-inverter air/con, it only has one spd which is the max spd, so when the designated temperature is reached, it will switch off and when the room needs cooling again, it'll go spd-5.

The following is my own speculation:

i think the inverter circuitry is some sort of power electronics and as such may not have such a long lifetime. So although theoretically inverter air/cons should save energy cost, the extra cash put in plus the 'speculated' shorter life-span may or may not be worth while.

Me? I got inverter!

There's also the issue of R22 gas versus R410a gas. Again supposedly R410a is more efficient, but it runs at 1~2x the pressure of R22 so installation costs increases with the need of thicker Cu pipes. Many inverter air/con uses R410a, while i have yet to come across non-inverter air/con using R410a.

also if you wanna use R410a but your previous air/con uses R22 gas, you would need to replace all the Cu pipes. Although some contractors may say it's okay... i'd suggest you read up a bit before buying their story.

[chunlianghere]

thesingingbard wrote:

hee... i wanna state that i'm not recommending any company per se, just relating GC does a better job than my previous free-lance contractor. Who knows? Maybe most air/con companies do a better job than him.

however i would like to say something about Inverter aircon here...

The inverter actually refers to an inverter circuitry in the compressor unit that inverts the 50Hz A/C into a D/C. By doing that the rotational speed of the compressor can thus be regulated.

The inverter air/con is like having a 5-spd ceiling fan. During initial power up, it goes to spd-5 to cool the room to a designated temperature than it goes to a lower speed, say spd-1~2 to maintain the temperature.

for a non-inverter air/con, it only has one spd which is the max spd, so when the designated temperature is reached, it will switch off and when the room needs cooling again, it'll go spd-5.

The following is my own speculation:

i think the inverter circuitry is some sort of power electronics and as such may not have such a long lifetime. So although theoretically inverter air/cons should save energy cost, the extra cash put in plus the 'speculated' shorter life-span may or may not be worth while.

Me? I got inverter!

There's also the issue of R22 gas versus R410a gas. Again supposedly R410a is more efficient, but it runs at 1~2x the pressure of R22 so installation costs increases with the need of thicker Cu pipes. Many inverter air/con uses R410a, while i have yet to come across non-inverter air/con using R410a.

also if you wanna use R410a but your previous air/con uses R22 gas, you would need to replace all the Cu pipes. Although some contractors may say it's okay... i'd suggest you read up a bit before buying their story.

agree wit your post!

oh...haha. than gd luck to your inverter!

ahh...there is actually, non-inverter using R410A. Mitsubishi Electric hav lots of it.

but for inverter using R22, than Daikin hav lots of it.

[thesingingbard]

chunlianghere wrote:

agree wit your post!

oh...haha. than gd luck to your inverter!

ahh...there is actually, non-inverter using R410A. Mitsubishi Electric hav lots of it.

but for inverter using R22, than Daikin hav lots of it.

k. noted.

[mikezuper]

thesingingbard wrote:

hee... i wanna state that i'm not recommending any company per se, just relating GC does a better job than my previous free-lance contractor. Who knows? Maybe most air/con companies do a better job than him.

however i would like to say something about Inverter aircon here...

The inverter actually refers to an inverter circuitry in the compressor unit that inverts the 50Hz A/C into a D/C. By doing that the rotational speed of the compressor can thus be regulated.

The inverter air/con is like having a 5-spd ceiling fan. During initial power up, it goes to spd-5 to cool the room to a designated temperature than it goes to a lower speed, say spd-1~2 to maintain the temperature.

for a non-inverter air/con, it only has one spd which is the max spd, so when the designated temperature is reached, it will switch off and when the room needs cooling again, it'll go spd-5.

The following is my own speculation:

i think the inverter circuitry is some sort of power electronics and as such may not have such a long lifetime. So although theoretically inverter air/cons should save energy cost, the extra cash put in plus the 'speculated' shorter life-span may or may not be worth while.

Me? I got inverter!

There's also the issue of R22 gas versus R410a gas. Again supposedly R410a is more efficient, but it runs at 1~2x the pressure of R22 so installation costs increases with the need of thicker Cu pipes. Many inverter air/con uses R410a, while i have yet to come across non-inverter air/con using R410a.

also if you wanna use R410a but your previous air/con uses R22 gas, you would need to replace all the Cu pipes. Although some contractors may say it's okay... i'd suggest you read up a bit before buying their story.

Great post, very easy to understand!

chunlianghere wrote:

agree wit your post!

oh...haha. than gd luck to your inverter!

ahh...there is actually, non-inverter using R410A. Mitsubishi Electric hav lots of it.

but for inverter using R22, than Daikin hav lots of it.

Daikin strategy is interesting.. hmm..

[chunlianghere]

mikezuper wrote:

Daikin strategy is interesting.. hmm..

yeah...tat is y only Daikin makes aircon!

[mypj_88]

Thanks thesingingbard for the post of inverter.

Hi All,

i called coolserve in the afternoon. spent 15min to talk about my need & their product & service. Gave them my email, and they had forward me a quotation.

Hi Chunliang,

coolserve ppl mentioned that i may need to check with hdb, to place outdoor condenser at service balcony or must install bracket. But they offer a site visit to show me how the piping run.

[chunlianghere]

mypj_88 wrote:

Thanks thesingingbard for the post of inverter.

Hi All,

i called coolserve in the afternoon. spent 15min to talk about my need & their product & service. Gave them my email, and they had forward me a quotation.

Hi Chunliang,

coolserve ppl mentioned that i may need to check with hdb, to place outdoor condenser at service balcony or must install bracket. But they offer a site visit to show me how the piping run.

no need check, its already stated on the website tat it is approved to place it at service balcony.

http://www.hdb.gov.sg/fi10/fi10205p....n?OpenDocument

coolserve nv do homework arh? LOL..

[controller]

chunlianghere wrote:

yup.. under "compressor type", if there got "TWIN" word, means is 2 compressor inside. if didnt, than it is one.

having 1 or 2 compressor inside, it depends on yr usage n also hav advantage n disadvantage too.. but than getting one wit 2 compressor inside consumes more electricity.

Thanks chunliang... understand abit further...

My usage will be mostly only 1 bedroom ON for night (7hours) and another bedroom On once in a while for night.. (maybe once a week).

If I got a TWIN compressor type, for my usage of most 1 room on at night, will it only switch on 1 compressor of the TWIN?

I want to get s non inverter sys3.

[chunlianghere]

controller wrote:

Thanks chunliang... understand abit further...

My usage will be mostly only 1 bedroom ON for night (7hours) and another bedroom On once in a while for night.. (maybe once a week).

If I got a TWIN compressor type, for my usage of most 1 room on at night, will it only switch on 1 compressor of the TWIN?

I want to get s non inverter sys3.

in this case, daikin wouldnt suits u as daikin non-inverter is 1 big compressor. so only other brand non-inverter wil use 2 compressor inside.

[terumo]

To: Controller,
You shld get Twin compressor brands like Panasonic or Toshiba. These 2 are quite reliable brands.