Air conditioning - Any recommendations please??

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TaLLKeV

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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

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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

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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. =:p

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. :s8:

Me? I got inverter! :D

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. :look:

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. :s8:
 
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chunlianghere

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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. =:p

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. :s8:

Me? I got inverter! :D

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. :look:

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. :s8:
agree wit your post!

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

ahh...there is actually, non-inverter using R410A. Mitsubishi Electric hav lots of it.:s13:

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

mikezuper

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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. =:p

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. :s8:

Me? I got inverter! :D

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. :look:

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. :s8:
Great post, very easy to understand!

agree wit your post!

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

ahh...there is actually, non-inverter using R410A. Mitsubishi Electric hav lots of it.:s13:

but for inverter using R22, than Daikin hav lots of it.
Daikin strategy is interesting.. hmm..
 

mypj_88

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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

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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...tions and Method of Installation?OpenDocument

coolserve nv do homework arh? LOL..
 

controller

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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

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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

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

mikezuper

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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.
Bro mypj_88,

Is coolserve using Armaflex as well as better copper pipe?
I went to ask GC and they give G-flex and if want to top-up to Armaflex and better copper pipe, it will cost me another $180, so overall is $80 more ex than coolserve.

Did you checkout Hong Tar?

Who did better job of installation: Hong Tar, Gain City or CoolServe?
So it wont leak and less problem for next cool 5-7years? :D
 

chunlianghere

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some say gain city giv armaflex.. but well, since they wan u to top up to get armaflex, might as well go coolserve liao..haha.
 

mypj_88

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Bro mypj_88,

Is coolserve using Armaflex as well as better copper pipe?
I went to ask GC and they give G-flex and if want to top-up to Armaflex and better copper pipe, it will cost me another $180, so overall is $80 more ex than coolserve.

Did you checkout Hong Tar?

Who did better job of installation: Hong Tar, Gain City or CoolServe?
So it wont leak and less problem for next cool 5-7years? :D

Hi Bro. Mike,

In the quotation, it stated standard installation. Additional charges for copper pipe more than 15mtrs per FCU, and thicker insulation will charge $80 per FCU. I had replied coolserve's email to ask for the materials used.

By the way, the price from 3.6k+ - 3.7k+ quoted for system 4 inverter-Mitsubishi electric - Daikin - Toshiba.

I dont know about Hong Tar. Maybe you could give me their contact, I will call them.

Hi Chunliang,

Thanks for the HDB link. I had check before, but dont understand. Because my service balcony is beside 2 toilets. No direct link to rooms. Not sure how the pipe run. Will arrange coolserve to have a site survey, if confirm to use their service.
 

siriusb

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Hi, would like to check with 'old bird' here. Is there any limitation or i can install any multi spilt air cons that i want.
eg: AMPS not enough to power the air con
 

chunlianghere

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Hi Bro. Mike,

In the quotation, it stated standard installation. Additional charges for copper pipe more than 15mtrs per FCU, and thicker insulation will charge $80 per FCU. I had replied coolserve's email to ask for the materials used.

By the way, the price from 3.6k+ - 3.7k+ quoted for system 4 inverter-Mitsubishi electric - Daikin - Toshiba.

I dont know about Hong Tar. Maybe you could give me their contact, I will call them.

Hi Chunliang,

Thanks for the HDB link. I had check before, but dont understand. Because my service balcony is beside 2 toilets. No direct link to rooms. Not sure how the pipe run. Will arrange coolserve to have a site survey, if confirm to use their service.
u got any floor plan? or to draw out?
 
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