Air conditioning - Any recommendations please?? - Part 2

batniss

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1. Calculate the amount of cooling capacity you need per room using the recommended formula below

Cooling capacity required in kW = Total area to be air-conditioned [m2] ÷ 5
*to convert to Btu/hr, multiply the kW result by 3412

2. Then look at which combination suits your place. It has to be either equal or higher than your calculations.

3. Then compare the rated kW of the same combination per room against your calculations. Again, it has to be equal or higher than your calculations.

MKM85
CombinationRoom 1Room 2Room 3Room 4Total
2.5+2.5+2.5+2.51.81 (2.47)1.81 (2.47)1.81 (2.48)1.81 (2.47)
7.24​
2.5+2.5+2.5+3.51.67 (2.25)1.67 (2.25)1.67 (2.25)2.34 (3.15)
7.36​
2.5+2.5+2.5+5.01.53 (2.05)1.53 (2.05)1.53 (2.05)2.81 (3.77)
7.4​
2.5+2.5+2.5+6.01.37 (1.90)1.37 (1.90)1.37 (1.90)3.29 (4.54)
7.4​
2.5+2.5+2.5+7.11.27 (1.75)1.27 (1.75)1.27 (1.75)3.59 (4.99)
7.4​
2.5+2.5+3.5+3.51.48 (2.06)1.48 (2.06)2.07 (2.89)2.07 (2.89)
7.1​
2.5+2.5+3.5+5.01.37 (1.90)1.37 (1.90)1.92 (2.65)2.74 (3.49)
7.4​
2.5+2.5+3.5+6.01.28 (1.77)1.28 (1.77)1.79 (2.47)3.05 (4.23)
7.4​
2.5+2.5+3.5+7.11.19 (1.70)1.19 (1.70)1.66 (2.38)3.36 (4.82)
7.4​
2.5+2.5+5.0+5.01.25 (1.75)1.25 (1.75)2.30 (3.22)2.30 (3.22)
7.1​
2.5+3.5+3.5+3.51.37 (1.91)1.91 (2.67)1.91 (2.67)1.91 (2.67)
7.1​
2.5+3.5+3.5+5.01.28 (1.76)1.79 (2.47)1.79 (2.47)2.54 (3.24)
7.4​
2.5+3.5+3.5+6.01.19 (1.65)1.67 (2.31)1.67 (2.31)2.87 (3.96)
7.4​
3.5+3.5+3.5+3.51.78 (2.48)1.78 (2.48)1.78 (2.48)1.78 (2.48)
7.12​
3.5+3.5+3.5+5.01.67 (2.30)1.67 (2.30)1.67 (2.30)2.39 (3.03)
7.4​

You can see that many of the rated kW is lower than the FCU itself because rooms can be smaller, especially BTOs now. They probably only need around 6-7K BTU but the smallest FCU in the market is 9K.

So right size the CU against your rooms, not the FCU, else everyone has to get the MKM100 and Daikin might as well sell only MKM100.

You do need to get the FCU that is either equal or higher though.
super useful!
 

Asus80

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Can I check… if Sys 4 compressor btu is 36k.
and sometimes all 4 blowers are on (12+9+9+9), will it spoil the compressor? Since all 4 blowers are 39k. or will it just not be as cold?

appreciate your answers.
shorter lifespan also
 

GBC

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Hellooo!

I'm purchasing my upcoming resale flat and it comes with system 3 in 3 bedrooms
the current owner installed them 5years ago.

Should I:

1. Remain the system 3 and just add system 1 in living room or
2. replace everything and just do system 4 or
3. replace only pipings for current system 3 (remain the unit) and add system 1 in living room?

TIA!
I think you should leave things as it is now and use the existing system until it uplorry. After that then change aircon system you want including the aircon piping.
 

WANGLAI

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Hi just wondering anyone had engaged livecool solution for their aircon installation and also how their workmanship and after services? Tks
 

itsmywill

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btw i just checked with 2 aircon retailers and gain city.

model will release next year for Starmex R32 variant. Those can wait, you will have more options. However whether it comes with the smart feature by default is anyone's guess.

Gain city now selling this MITSUBISHI R32 model (in stock), not sure if it's starmex

 

WANGLAI

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qweiopertyu

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anyone purchased black aircon (I think currently only LG has it). I'm thinking if it is worth it to get. I'm thinking that white air con will get yellowish. thanks
 

batniss

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anyone purchased black aircon (I think currently only LG has it). I'm thinking if it is worth it to get. I'm thinking that white air con will get yellowish. thanks
maintenance will be expensive.
 

batniss

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maintainance will be expensive in terms of the parts? Is it because it is LG?
for aircon which are non-mainstream, it will be difficult to find aircon service anywhere. Eventually, your only option is back to authorized servicing and we all know authorized service is never cheap.
 

qweiopertyu

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for aircon which are non-mainstream, it will be difficult to find aircon service anywhere. Eventually, your only option is back to authorized servicing and we all know authorized service is never cheap.
ok thank you for the advice. May I know which ones are mainstream and what are the factors that make it mainstream so I can decide.
 

petetherock

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ok thank you for the advice. May I know which ones are mainstream and what are the factors that make it mainstream so I can decide.
Take a look in this thread and see what brands and models are the most often talked about...
 

Norman Chan

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Anyone using Haier brand of multi system R32 aircon, for system 4 only cost about S$3k+++
 

Alphas

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Hellooo!

I'm purchasing my upcoming resale flat and it comes with system 3 in 3 bedrooms
the current owner installed them 5years ago.

Should I:

1. Remain the system 3 and just add system 1 in living room or
2. replace everything and just do system 4 or
3. replace only pipings for current system 3 (remain the unit) and add system 1 in living room?

TIA!
Can the resale HDB accommodate two compressors? I am assuming the system 3 is working fine. If so, then option 1 would make sense. Option 2 will cost the most and option 3 makes no sense to fix something when nothing is faulty.
 

Norman Chan

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Think you have not fully move in is good to change the whole system, five years many things happen, just go for those new R32 gas type of system 4.
 
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