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Old 18-07-2017, 08:02 AM   #9872
Junior Member
Join Date: Jan 2013
Posts: 77
portable aircon creates negative pressure which will suck warm air from outside into your cooling area, it will never be cold and small evaporator and condensing coils plus the hot exhaust hose and compressor all in the room means low efficiency,

portable aircon 7 btu per watt, 8400 btu = 1200 watts per hour.

mitsubishi 5 ticks average 16.6 btu per watt, 8321 btu = 500 watts per hour.
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