it's all about heat balance. Like is the window facing the sun at it's strongest in daytime, or 2 storey house where second floor is hotter because of the hot attic from sun rays (and hotter air rises up), is one of the major wall in the room are being torched by the sun rays, how good insulation is etc

This post has been edited by terradrive: Sep 22 2025, 08:09 AM

Yupp size up for inverter, for non inverter too big sized isn't good because it will keep on cycling on and off. If needed the extra cooling for non-inverter can pasang dua biji instead, only use one when not much cooling power needed.