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Old 20-12-2016, 10:25 PM   #8993
dachee
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Join Date: Nov 2016
Posts: 262
Hi guys, need some help on aircon system selection.
I asked for advice from 2 contractors on what kind of system best suits my needs. I need 4 indoor units for a 4 room flat, 3 bedrooms and 1 living room. My consumption likely 8hr for master bedroom and 1 other room for few hrs. The other room and living room is for occasional usage. I asked for which system type is more suitable for me:

1st contractor: use system 4 Mitsubishi electric as is more durable based on his experience, since my usage is low, if i choose system 2+2 or 3+1, the aircons may spoilt more easily under low usage as machines are designed to run for it's specification, furthermore nowadays machines don't last like last time.

2nd contractor: use system 3+1 or 2+2 daikin as daikin has less problems. If i would to use system 4, there will be more wear and tear and there wont be any backup if any compressor spoilt. He suggests system 3 for bedrooms and system 1 for living room, or system 2 for both rooms which i use more often, the other system 2 for living room and less usage room.

Both sound logical to me and i do not know who to listen. My objective is to have as lasting as possible aircons, minimum issues and lower cost in long run.
Hi,

Contractor 1 has no basis in this comment. No meaning in his reasoning.

Contractor 2 gives a more logical answer. But no backup for damaged compressor is not logical. Most companies have 5 yrs warranty for compressor.

Depending on the living room size. If all room use the same capacity, say 9K Btu, than 2 (for more often used rooms) + 2 (for less often used rooms) is a nice combination. But if the less often used rooms are really less often used, then, why install air conditioners. By the time, you get to fully use these air conditioner to test its fault or installation fault, your warranty of one year would have passed.

Would it be better to install only a system 2 for the often used rooms first at this time, and when it is really necessary to install another condenser? You can decide whether you want only for the bedroom (ie just a single split) or both bedroom and living room (system 2).

However, you need to be aware that doing this way may mean that you may end up with additional conduit for the pipes at places nearer to the condensers in future, one for the first system installed now, and another for the system installed in future.

The above are my opinion and hope that they are helpful.

Last edited by dachee; 21-12-2016 at 08:32 AM..
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