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Air conditioning - Any recommendations please?? - Part 2

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Old 10-09-2019, 09:29 AM   #3421
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For my living/dining room (pic below - circled in yellow )
Should I go for :
1) 2 x 9,000 btu, or
2) 1 x 9,000 btu and 1 x 12,000 btu, or
3) 1 x 18,000 btu (single split) ?

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Old 10-09-2019, 11:14 AM   #3422
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I will recommend 1 for dining, 2 or 5 for living. If you don't mind,centralise 2 to above TV. Will be good too

Problem with 5 is the routing.

6 is good but the dining is just below 6. You won't feel the air con if sitting directly below it.

2 air cons are better than single air con. Please be advised that you do not pair both air con in the living rooms to one compressor. It doesn't maximise your air con cooling capacity.

Actually no good consultant or air con company will advise you to pair in that way. The thermal comfort should be more important than electricity saving.

My 2 cents.
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Old 10-09-2019, 11:48 AM   #3423
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Hi, my 10 yrs old Panasonic a/c needs servicing am thinking whether to change a new a/c. This a/c is trouble free just yearly need servicing. Thanks.
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Old 10-09-2019, 12:36 PM   #3424
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For my living/dining room (pic below - circled in yellow )
Should I go for :
1) 2 x 9,000 btu, or
2) 1 x 9,000 btu and 1 x 12,000 btu, or
3) 1 x 18,000 btu (single split) ?






2 x 9k (on wall surface 1 and 2) better if you want fast cooling. no need 9k plus 12k as it is similar to room size.

single 18k will take longer time to cool the furthest corner unless you install a fan to help circulate.

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Last edited by Phases; 10-09-2019 at 12:42 PM..
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Old 10-09-2019, 12:49 PM   #3425
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Hi, my 10 yrs old Panasonic a/c needs servicing am thinking whether to change a new a/c. This a/c is trouble free just yearly need servicing. Thanks.
got to depend how much you paid for yearly servicing. if it is very little think just keep using to breakdown beyond economical repair as long there is no sweating, severe gas pressure lost and any issue which affects performance or operating cost.

what you can do is to open trucking to inspect the condition of the insulation, if started to disintegrating then may be time to change.

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Last edited by Phases; 10-09-2019 at 09:14 PM..
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Old 10-09-2019, 04:51 PM   #3426
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My advice is best not to place any aircon above tv unless u installed a plank or something above the tv to block any water coming down from aircon in case of leaking.

Also, better get a higher btu rating than just normal 2x9k btu for living room+Dining area cos it’s not just 1 single room individually, it’s an open area together and with more ppl. Not a room with 1 or 2 ppl inside.
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Last edited by craigchua; 10-09-2019 at 04:56 PM..
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Old 10-09-2019, 09:10 PM   #3427
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My advice is best not to place any aircon above tv unless u installed a plank or something above the tv to block any water coming down from aircon in case of leaking.

Also, better get a higher btu rating than just normal 2x9k btu for living room+Dining area cos it’s not just 1 single room individually, it’s an open area together and with more ppl. Not a room with 1 or 2 ppl inside.
good point on the possible sweating above tv.

larger fcu only cost slight more (about 200-300 a unit), from 9k to 18k but i feel may not really necessary as cooling effect and speed should be good enough unless there is intention to only switch on one unit (which i overlooked earlier) like watch tv or dinning instead of both.

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Old 10-09-2019, 09:42 PM   #3428
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One of my daikin compressors stopped working and oh boy it is a problematic compressor with 2 pcb replacements over 2 years now (warranty is over). R22 gas model. It is a system 1 x 2 compressor.

Is it better for me to get system 1 x 2 compressor to cool two rooms or stick to a system 2?

The rooms are small. A tv room and a study room.
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Old 11-09-2019, 04:45 PM   #3429
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Thanks guys for the very useful inputs on my earlier question on air-con sizing and position of placement.

The next question (and which may be a tricky one to answer because it's difficult to differentiate between a recommendation and an 'advertisement') is if there any recommendations from you guys for an air-con vendor/installer other than the usual electronics superstore type like Gaincity/Courts/Harvey Norman/Best Denki ?

I have contacted the following vendors:
  • Harvest Aire
  • Air Con Citi
  • Air Connection
  • Coolserv

Prices vary between same price as Gaincity/Courts/Harvey Norman/Best Denki and $500-600 cheaper than Gaincity/Courts/Harvey Norman/Best Denki. However, there seems to be varying levels of service.

Any other recommendations please ? thanks.
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Old 11-09-2019, 10:00 PM   #3430
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One of my daikin compressors stopped working and oh boy it is a problematic compressor with 2 pcb replacements over 2 years now (warranty is over). R22 gas model. It is a system 1 x 2 compressor.

Is it better for me to get system 1 x 2 compressor to cool two rooms or stick to a system 2?

The rooms are small. A tv room and a study room.
Your aircon should be replaced since it’s old n problematic.
All new aircon only has 1 compressor. Just a system 2 will be enough for your case.
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Old 11-09-2019, 10:03 PM   #3431
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Thanks guys for the very useful inputs on my earlier question on air-con sizing and position of placement.

The next question (and which may be a tricky one to answer because it's difficult to differentiate between a recommendation and an 'advertisement') is if there any recommendations from you guys for an air-con vendor/installer other than the usual electronics superstore type like Gaincity/Courts/Harvey Norman/Best Denki ?

I have contacted the following vendors:
  • Harvest Aire
  • Air Con Citi
  • Air Connection
  • Coolserv

Prices vary between same price as Gaincity/Courts/Harvey Norman/Best Denki and $500-600 cheaper than Gaincity/Courts/Harvey Norman/Best Denki. However, there seems to be varying levels of service.

Any other recommendations please ? thanks.
If u are planning to get extended warranty, go with gain city. They are the biggest retailer with extended warranty.
If not getting it, just any contractor u think is good.
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Old 12-09-2019, 03:08 PM   #3432
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1 told me the unit (MXY4G33VA2) 10 + 10 + 10 +13 (living room) will be sufficient and another told me (MXY4G38VA2)10 + 10 + 13 (master bedroom) + 24 (living room).
Sorry, now got another offer
MXY3G28VA
XMSXYFN10VE (Bedroom 2)
XMSXYFN10VE (Bedroom 3)
XMSXYFN13VE (Master Bedroom)

MUYGN24VA
MSY-GN24VA (Living Room)

Is this feasible comparing to earlier option?
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Old 12-09-2019, 03:53 PM   #3433
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Sorry, now got another offer
MXY3G28VA
XMSXYFN10VE (Bedroom 2)
XMSXYFN10VE (Bedroom 3)
XMSXYFN13VE (Master Bedroom)

MUYGN24VA
MSY-GN24VA (Living Room)

Is this feasible comparing to earlier option?
provided you are allow to install 2 compressors for your home

do you turn on one unit mostly or two units (one living room plus any bedroom)? if mostly 2units, meaning you will be running 2 compressors thus operating cost should be slightly higher compares to single compressor, i believe and it also depends on number of hours you intend to run everyday, longer the usage cost difference will be more.

i live alone and intending to ac 3 bedrooms plus 2 halls thus planning to hv 2 units of compressors since i only switch on 1 ac at a time, using a single big compressor meant for 5rooms for cooling a room, electricity waste will be higher.

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Last edited by Phases; 12-09-2019 at 03:57 PM..
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Old 12-09-2019, 06:00 PM   #3434
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Really all depending on how u use.
My setup same as u, but previous version. 2 compressor. 1 for all rooms, 1 for living.
My family uses quite often in the living room after office hrs.
For the rooms, sometimes use at the same time depending on weather.
So 2 compressor is good in this way.
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Old 12-09-2019, 06:55 PM   #3435
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For my living/dining room (pic below - circled in yellow )
Should I go for :
1) 2 x 9,000 btu, or
2) 1 x 9,000 btu and 1 x 12,000 btu, or
3) 1 x 18,000 btu (single split) ?

3 x 9,000 btu at 3 6 7, 7 can cool the living or dining. or 2 6 7.

4 x 9,000 btu at 1 2 3 6. or 1 2 6 7.
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