megannn 0 Report post Posted December 12, 2016 my partner and i are not high usage of aircon. if day time hot, probably 2-4 hours usage. if hot at night, then just before we sleep we may switch on about 1-2 hours to cool down the room and sleep. currently we are the only two who will stay in our BTO so we will stay in the master bedroom. thinking if we should install system 1 only in the master bedroom or install system 3 in all 3 bedrooms. any advice? Share this post Link to post Share on other sites