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Air conditioning - Any recommendations please??

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Old 13-03-2017, 11:50 AM   #9391
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Hi,

Are your piping concealed inside the walls or all they very long in distance?


Hi guys can anyone tell me is the price alitte too expensive?

DAIKIN INVERTER (R410A) SYSTEM 3 
MODEL : MKS80QVMG / CTKS25QVM x 3 
CAPACITY : 25 200BTU / 8 530BTU x 3 

Price - $4,466

DAIKIN INVERTER (R32) SINGLE SPLIT
MODEL : RKM71PVMG / FTKM71PVM 
CAPACITY : 24 200BTU
Price - $2,205

Cut and make ceiling complete with white paint 
Price - $748

TOTAL with GST - $7938
All complete with new piping, testing and commissioning.
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Old 13-03-2017, 12:07 PM   #9392
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R32 is a very modern refrigerant, nice.
R32 is basically R410 minus R125(the non flammability part).

Developed under pressure from European tree huggers to stop global warming catastrophe. But this thing is flammable and very toxic if it does burn.

Manufacturer says unlikely to catch fire, but doesn't* that sound similar to lithium batteries on aircraft?

No doubt the risk is small, Im not sure if the efficiency and environment benefits are worth it. If it was me I'd choose the conventional refrigerant until this R32 is proven over time.

Last edited by dibromoethene; 13-03-2017 at 12:32 PM..
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Old 13-03-2017, 12:46 PM   #9393
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If similar price range, Panasonic will be a better choice.
i was thinking pf panasonic but my friend told me ice were coming out from his
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Old 13-03-2017, 12:54 PM   #9394
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Thats right i guess after all is the workmanship =
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Old 13-03-2017, 12:57 PM   #9395
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Hi,

Are your piping concealed inside the walls or all they very long in distance?

Concealed inside the walls. But i will have to reno my whole house as well, getting another guy to come down have a look and quote me today also..
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Old 13-03-2017, 01:00 PM   #9396
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I have similarly gotten MKS80QVMG with CTKS25QVM x 3 and CTKS60QVM x 1. It works out to be slightly higher than yours, so I think your deal's quite reasonable.

I'm guessing you're getting the FTKM71PVM unit to cool your living room. R32 is a very modern refrigerant, nice. You're paying a pretty penny for mainly the additional condenser; but I guess if your house (and wallet) can take the additional current, I don't see why not.

Whatever you go for, it's much more important to ensure that the installation process is done correctly (see dachee's helpful posts). No point paying top dollar for a fancy A/C hardware only to have subpar workmanship and materials.
I think i almost cannot take it lol
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Old 13-03-2017, 04:50 PM   #9397
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If concealed inside walls as in need hacking of the walls & patch back afterwards, then quite reasonable, if just above the ceiling (which most condo are), then a bit high price.


Concealed inside the walls. But i will have to reno my whole house as well, getting another guy to come down have a look and quote me today also..
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Old 13-03-2017, 05:24 PM   #9398
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R32 is basically R410 minus R125(the non flammability part).

Developed under pressure from European tree huggers to stop global warming catastrophe. But this thing is flammable and very toxic if it does burn.

Manufacturer says unlikely to catch fire, but doesn't* that sound similar to lithium batteries on aircraft?

No doubt the risk is small, Im not sure if the efficiency and environment benefits are worth it. If it was me I'd choose the conventional refrigerant until this R32 is proven over time.
Interesting info. Thanks!

Your point gets me thinking about the difference in efficiency (COP values) in spite of the similarity of coolants between different condenser models.

In other words, if two models of A/C systems rely on the same R-410A coolant -- and assuming that all other variables such as insulation are equal -- would it then be safe to conclude that a unit with a higher COP (or number of NEA ticks) is better engineered?
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Old 16-03-2017, 12:09 PM   #9399
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finally installed my Starmex (5-ticks) yesterday.
It went pretty okay except for
- for the vertical PVC pipes - no insulator
- for the vacuum - they only did like 5 mins when the pins on the gauged aligned or something

other than that, they were pretty good
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Old 16-03-2017, 01:42 PM   #9400
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5 ticks vs 2 ticks? Different alot meh? As in energy usage, for light and occasional usage, 2 ticks ones good enough?

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Old 16-03-2017, 03:18 PM   #9401
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Hi guys, one of my unit for system 3 went kaput. Tech stated compressor isnt working anymore and quoted 800+ to change it. Told me quite lugi to change cause my coil also 6 years old liao. Just wanna find out from the pro bros here if i could just get a single split aircon instead? Are they able to make another bracket right beside my existing old compressor?
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Old 16-03-2017, 07:03 PM   #9402
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What type of apartment are you staying at?



Hi guys, one of my unit for system 3 went kaput. Tech stated compressor isnt working anymore and quoted 800+ to change it. Told me quite lugi to change cause my coil also 6 years old liao. Just wanna find out from the pro bros here if i could just get a single split aircon instead? Are they able to make another bracket right beside my existing old compressor?
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Old 16-03-2017, 07:04 PM   #9403
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2 ticks is sufficient for light usage.



QUOTE=SecretAgent;106916108]5 ticks vs 2 ticks? Different alot meh? As in energy usage, for light and occasional usage, 2 ticks ones good enough?

[/QUOTE]
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Old 18-03-2017, 02:42 AM   #9404
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After discussion with my shortlisted contractor, decided not to reuse the existing aircon unit (Europace, 2-3 years in service) as I will be plastering the whole resale unit, trunking a bit ugly and uncertainty on the condition of the aircon/piping in general

Looking at System 3 to service the 3 bedrooms (Living room just ceiling fan):
MBR : 170sqft
BR2: 145sqf
BR3: 140sqf

Was reading up on sizing of the AC unit by BTU and got some conflicting views, the recommended BTU range from *35 to *65

If I use the *35 multiplier, 3 x 9000BTU A/C units would be more than sufficient
If I use the *65 multipler, I may need to get a 12000 for my MBR and 2 x 9000BTU for the 2 BRs

I think most of the Aircon companies seem to recommend the more kiasu *65 multipler, so that should be the safe choice right?

Considering to get a Daikin/ME 5 ticks unit so shortlisted the MKS65QVMG 21k BTU compressor unit as we would most likely be switching on aircon for 2 rooms at most at any one time, however if I scale up to 3 rooms next time would it be too small?
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Old 18-03-2017, 08:33 AM   #9405
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1/2" insulation is used for all the pipes from compressor to indoor unit or they will still use some other dimension in other areas?
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