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Air conditioning - Any recommendations please??

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Old 05-12-2016, 05:53 PM   #8851
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need some input from all the aircon guru. my contractor recommended me his air con installer. below are the quotes for 4 room bto.

Mks80qvmg/ ctks25qvm ◊3 / ctks50qvm ◊1
Daikin $4500

Mxy-4g28va/ msxy-fj10ve ◊3 / msxy-fj18ve ◊1
Mitsubishi electric
$4580

*Upgraded ac materials using
-16mm upvc drainage pipe
-22swq copper cool LCHT
-100% pure copper flexible cable - both 3c70 & 3c40 keystone
-1/2" thickness armaflex insulation
Hi,

I think you can get the Diakin and Mitsubishi system 4, both of similar condenser and FCUs at $4209 and $4388 respectively with same installation materials.

Above are my opinion and hope they are useful.
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Old 05-12-2016, 09:30 PM   #8852
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To JAPDestiny,
Based on usage condition, can opt for 2 compressor.
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Old 05-12-2016, 10:26 PM   #8853
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Hi, Sorry that you are confused. It is good to understand so that you can make a rational decision.

What is it that you are confused about? Good to clarify your doubt.
Not your fault .. ish I lousy ..

Just not sure is compressor issue .. ie change whole set .. or just MBr unit .. change only 1 .. save money ...

Also don't know who can reliably check for me without pushing me to some sales objective
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Old 05-12-2016, 11:09 PM   #8854
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Hi,

I think you can get the Diakin and Mitsubishi system 4, both of similar condenser and FCUs at $4209 and $4388 respectively with same installation materials.

Above are my opinion and hope they are useful.
hmm.. may i know where can u get price of $4209 and $4388
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Old 05-12-2016, 11:22 PM   #8855
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hmm.. may i know where can u get price of $4209 and $4388
Hi, you can do an internet search with this "air conditioner promotion singapore".

The result should bring you to a few companies, some listing prices close to these. But there are also installer who are able to sell lower prices as they can buy the unit at special prices from the authorized dealer than you.

Hope the above are helpful.
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Old 05-12-2016, 11:32 PM   #8856
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Not your fault .. ish I lousy ..

Just not sure is compressor issue .. ie change whole set .. or just MBr unit .. change only 1 .. save money ...

Also don't know who can reliably check for me without pushing me to some sales objective
Hi, Since yours is a Mitsubishi Electric product, you can call their technical support team for help and to provide you some recommended installer who are able to help you diagnose the problem accurately.

You may not have to change any FCU or condenser at all. It could be a piping system fault rather than a unit fault.

Call the installers to check whether they charge for visiting, ask for quote and compare.

Hope the avoid is helpful.
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Old 06-12-2016, 12:26 AM   #8857
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Hey guys

Considering system 3 starmex 5 ticks, from coolserve:
3x MSXY-FJ10VE
1x MXY-3G28VA

1. I was talking to a gain city salesperson, and he recommended me the 2 tick model, saying that the 5 tick compressor is underpowered at 20k btu (should be minimum 27k)

2. I was also looking at the brochure here. It says that the power is 6 (2.9-8.9) KW, which is technically 20,400 (9860-30,260) BTU.

That's kinda confusing. I guess the gain city guy was using the 6kw rating to make the recommendation, while the coolserv website is using the max number in the bracket to say that the compressor has a 30k btw capacity.

How are power ratings published for other brands/models? Why are there different numbers and which one should we use?

3. Personally, I'm looking at 5 tick because we use the aircon a lot. 1 unit will be on almost 24 hours, the other about 12 hours, and the 3rd on about 8 hours.

Obviously, the 5 tick rating will be pointless if I get 3x 9k btu blower but the capacity of the compressor is only ard 20k.

4. I've also been told that there's a noise issue. experiences anyone? If this compressor is truly underpowered, is the noise the result of it overworking?

I'm open to recommendations, except daikin because in my experience they're noisy and shitty lol.

5. Also I'm assuming it would be good to upgrade the pipe and insulation. Recommendations for merchants also welcome. Was checking out coolserv since they seem to be highly recommended by the folks at renotalk. All best seemed to have screwed up the piping for our current toshiba set.
Hi,

Pls refer to your comment above which I insert serial numbers for easy reference.

1. 5 ticks underpower - I would not say that the compressor is underpower because, in reality, most air conditioner system do not operate at full capacity all the time. It will depends on the temperature setting, fan speed, room humidity and outdoor temperature. So if the temperature setting is in what the manufacturer determined to be normal setting by the "population" of people, then the capacity of each FCU when operating together is within the compressor capacity. Meaning the normal operation is about 20k Btu.

2. It says that the power is 6 (2.9-8.9) KW, which is technically 20,400 (9860-30,260) BTU. 20.4k is normal rating , most people will use this amount with the indicated configuration of FCUs, 9.8k is min rating and 30.2k Btu is max. rating. But note that max. rating operates only for a short while and not continuous.

3. Yes, that will happen if you have all the FCUs running at full capacity, ie the coldest setting but if you are in an environment where you only need to cool down from 32 degree C to 25 degree C, then you may not need to remove 9k Btu but maybe only 5k Btu, so with all 3 FCUs operating at 25 degree, you only need 15K Btu out of your 20k Btu capacity compressor.

4. I've also been told that there's a noise issue. experiences anyone? If this compressor is truly underpowered, is the noise the result of it overworking?

Condenser noise can be due to many causes. However if it is due to the compressor, it will be inherited in its design and should appear in all similar products. You can visit Mitsubishi Electric at their Alexander Road showroom to have the respective set turned on to observe whether there is such noise at full capacity.

5. Also I'm assuming it would be good to upgrade the pipe and insulation. I feel that all installation should be done according to the manufacturing requirements. In doing so, any problem is still the responsibility of both the installer and the manufacturer within the warranty period. The upgrade is more a marketing approach to address the added precaution that most customers would like to have. But it is not a must.

The above are my opinion and hope that they are helpful.
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Old 06-12-2016, 09:21 AM   #8858
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any promo now for system 2?
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Old 06-12-2016, 09:24 AM   #8859
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any promo now for system 2?
Don't seem to get any reply from dealers and installers in this thread!
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Old 06-12-2016, 02:12 PM   #8860
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Hi,

I think you can get the Diakin and Mitsubishi system 4, both of similar condenser and FCUs at $4209 and $4388 respectively with same installation materials.

Above are my opinion and hope they are useful.
My contractor quoted me: I dun hv the model #s
Mitsubishi starmex inverter:

Option 1:
System 3: 18k BTU living, 9k MBR, 12k BR1(2 rooms hack into 1, so its bigger than MBR) @$3.6k

Option 2: 2 compressors since we requested our pref
Compressor 1: System 2: 12k MBR, 12k BR1
Compressor 2: 1 single unit 18k @$4.6k

are the quotes reasonable?

Last edited by JAPDestiny; 06-12-2016 at 02:20 PM..
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Old 06-12-2016, 04:23 PM   #8861
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My contractor quoted me: I dun hv the model #s
Mitsubishi starmex inverter:

Option 1:
System 3: 18k BTU living, 9k MBR, 12k BR1(2 rooms hack into 1, so its bigger than MBR) @$3.6k

Option 2: 2 compressors since we requested our pref
Compressor 1: System 2: 12k MBR, 12k BR1
Compressor 2: 1 single unit 18k @$4.6k

are the quotes reasonable?
Hi, you need the models for price comparison. System 3 StarMex has different models with very great price differences.

Last edited by dachee; 06-12-2016 at 04:42 PM..
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Old 06-12-2016, 08:45 PM   #8862
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To JAPDestiny,

This should be the 2 ticks series based on the pricing.

Option 2 seems a bit over priced.
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Old 07-12-2016, 12:50 AM   #8863
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Hi guys,

I really need help choosing between these 2 air cons.

LG System 3
Mit Starmex Sys 3

Both are the newest model with 5 ticks.

I looked thru all the bad reviews online, and seems like LG got more bad reviews. But, there's a promo for LG now, $300 grocery voucher.

Which one will give me less trouble in future?
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Old 07-12-2016, 01:19 AM   #8864
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Dropped by gain city today and wanted to find sys3, here are the best 2 options that I found (5 ticks for aircon unit and inverter) :

#1
LG Health Plus System 3 Inverter
A4UQ26GFA2
09GDBA2 x 3

$3359sgd

#2
Mistubishi System 3 Inverter
MXY3G28VA(CU)
MSXYFJ10VE x 3

$3579

(Still green to aircon choosing
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Old 07-12-2016, 01:35 PM   #8865
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To thecat21,

Price seems reasonable.
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