Air conditioning - Any recommendations please?? - Part 2

light84

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Am I right to say MXY3g28va2 only have a total BTU of 20,470? Cos a contractor is claiming it have 28,000 BTU

It has a maximum capacity of 8.9kW, approximately 30000 BTU.

The rated capacity is 6kW is 20742 BTU

The compressor is an inverter drive, it can vary the frequency to run the compressor faster but it’s not for extended period.

Dun look at the 28 of the 3G28VA2 to determine BTU. Look at the rated capacity in the catalogue
 

light84

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Condenser, not compressor. Compressor is just a single part within the condenser unit.

4G38VA2 performance with 1x FN13, 3x FN10 - bold indicates fulfilled FCU performance
1x FN10 - 9.5K
1x FN13 - 11.9K
1x FN10 + 1x FN10 - 9.5K + 9.5K
1x FN10 + 1x FN13 - 9.5K + 11.9K
2x FN10 + 1x FN13 - 7.3K + 7.3K + 9.1K
3x FN10 - 7.9K + 7.9K + 7.9K
All units on: 5.6K + 5.6K + 5.6K + 7.0K

GC price is $5390, so $5.3k is okay provided the installer is good. Remember that aircon spec & brand is one thing, installation quality is also key. If $4.0k but installation like sai, I also don't want because down the line will give more problems.

You should just call it outdoor unit. Condenser is just referring to one of the part of the the outdoor unit which is the condensing coil whereby the refrigerant condense back into liquid state from gaseous state. Compressor is also just a part.
 

petetherock

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Yep
Installation is where the money is spent ..
Don’t just go cheap ..
 

Jana999

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Hi gurus


I'm looking to get a system 3 for my bedrooms (as highlighted on floor plan).
Like to get some advice on the configuration and brand to go for.
I see most recommending either Mitsubishi Electric for the serviceability or Daikin iSmile for ease of use.


photo-1634196394132.jpg


Thanks

If I get mitsubishi electric, is the usual MXY3G28VA2 x 1 + MSXYFN10VE x 3 combo enough for the 3 rooms?
 

yankeezulu

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If I get mitsubishi electric, is the usual MXY3G28VA2 x 1 + MSXYFN10VE x 3 combo enough for the 3 rooms?

Same question here too, is gain city installation any good? I have existing installation and trunking and want to redo some parts of the placement, will they be able to do that?
 

GBC

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If I get mitsubishi electric, is the usual MXY3G28VA2 x 1 + MSXYFN10VE x 3 combo enough for the 3 rooms?
MXY3G28VA2 supporting 3 x MSXYFN10VE (9k BTU) will only give you 1.9 kw (6,483 BTU) per room, is this sufficient cooling power for your 3 bedrooms ? You are better off with MXY4G38VA2 with 3 x MSXYFN10VE as your rooms cooling requirement does not exceed 8K BTU each.
 
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petetherock

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You don't find this issue with fridges or even TVs... you don't get to choose a lower power supply or a cheaper condenser... giving people choice is not always the best idea.
GBC and other pros - I think you guys deserve a sticky on this ....
 
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You don't find this issue with fridges or even TVs... you don't get to choose a lower power supply or a cheaper condenser... giving people choice is not always the best idea.
GBC and other pros - I think you guys deserve a sticky on this ....
Can I request for a FAQ instead so the pros don't have to keep replying? I feel bad for them.

And another problem is, when I go to GC, the sales person recommends the standard System 4. When I ask, won't it be insufficient to cool the whole house, he replied "you won't need to on all the air con".

Isn't it weird? I want to pay more to get more system but the sales person recommend a cheaper one to us?
 

petetherock

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Can I request for a FAQ instead so the pros don't have to keep replying? I feel bad for them.

And another problem is, when I go to GC, the sales person recommends the standard System 4. When I ask, won't it be insufficient to cool the whole house, he replied "you won't need to on all the air con".

Isn't it weird? I want to pay more to get more system but the sales person recommend a cheaper one to us?
I agree, you need to talk to the mods handling this forum :)
 

Ark Law

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And another problem is, when I go to GC, the sales person recommends the standard System 4. When I ask, won't it be insufficient to cool the whole house, he replied "you won't need to on all the air con".

Isn't it weird? I want to pay more to get more system but the sales person recommend a cheaper one to us?
Aircon salespeople 80% of the time probably deal with people who know nothing, 18% who talk as if they know something but still can easily influence anyway, and maybe 2% who actually know what makes a good aircon setup & installation.

So for those 98%, convincing them that the outdoor unit can "turbo" and use max rating during cooling phase, that would be sufficient because those 98% ain't likely to want to fork out more for a 33/38VA2. Cheaper + salesman say can cope = close sale = ez commission. A tried and tested template. No need to deviate.
 
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I agree, you need to talk to the mods handling this forum :)
Wait, aren't you a moderator?

Aircon salespeople 80% of the time probably deal with people who know nothing, 18% who talk as if they know something but still can easily influence anyway, and maybe 2% who actually know what makes a good aircon setup & installation.

So for those 98%, convincing them that the outdoor unit can "turbo" and use max rating during cooling phase, that would be sufficient because those 98% ain't likely to want to fork out more for a 33/38VA2. Cheaper + salesman say can cope = close sale = ez commission. A tried and tested template. No need to deviate.
Understand. Salesperson are very pushy. Nearly followed what they recommended.
 

herzog21

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So i went window shopping for aircon and was quoted LG A4UQ28GFA0 + AMNQ09GSJC0 (9k x 3) for $3666

The specs is roughly on par with ME MXY4G38VA2 with FN10 (9k x 3) which costs $3850. Both excludes installation fees.

Do anyone have experience with LG aircons? I notice most are going for the standard ME aircons.
 

Ark Law

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Do anyone have experience with LG aircons? I notice most are going for the standard ME aircons.
- Spare parts availability & lead times
- Can take out a lot of parts during general servicing for cleaning
- Widespread manufacturer & independent support due to mass market uptake
 

yxphoon

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Sorry to jump in.
I get my aircon pipe installation today.
For the living room, they give 1way 1/2inch copper pipe, and another 1/4inch copper. For bedroom is 9.52mm pair with 1/4 inch.
Is this normal practice?
Thanks for attention.
 

GBC

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Sorry to jump in.
I get my aircon pipe installation today.
For the living room, they give 1way 1/2inch copper pipe, and another 1/4inch copper. For bedroom is 9.52mm pair with 1/4 inch.
Is this normal practice?
Thanks for attention.
Thickness of copper pipe is measured in Gauge number ie SWG 22 etc..
 

yxphoon

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Thickness of copper pipe is measured in Gauge number ie SWG 22 etc..
Thanks, for 1/2 inch and 1/4 inch have another reading 22SWG, the 9.52mm one don't have this SWG thing it mentioned thickness as 0.71mm
 

GBC

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Local standard installation is use SWG 23 (0.61mm) but most give free upgrade to SWG 22. 0.71mm thickness is SWG 22.
 

mkaung2000

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Sorry to jump in.
I get my aircon pipe installation today.
For the living room, they give 1way 1/2inch copper pipe, and another 1/4inch copper. For bedroom is 9.52mm pair with 1/4 inch.
Is this normal practice?
Thanks for attention.
Higher BTU units, ie: 18k use larger dia copper pipe.
Liquid pipe
6.35(flared)1/4
Gas pipe
9.52(flared)3/8 - 9k, 12k, 15k BTU
12.7(flared)1/2 - 18k, 24k BTU
 

koohansen

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I wonder anyone has heard of Gree Aircon.
5 ticks, 3 years warranty, R32.

Looking for a System 3, 9+9+12 for my 3 room BTO 68sqm.
 
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