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Old 12-07-2017, 01:54 PM   #9858
Senior Member
Join Date: Oct 2004
Posts: 1,900
Whats the model for your system 3?
Seems very high price.

I have a question, but I cant find an answer......
Hope some expert can fill in some info

If install BTO 4room with system 3. 5 ticks energy efficient.
Total cost plus installation: 3600 (aircon) + 1000 (installing, drilling) = 4600.

If buy 3 window unit aircon, will it be cheaper?
In terms of electricity.

Window Unit aircon VS central aircon (system 3)
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