Which one is more energy saving? Split Unit or Window Unit A/C?
Answer:
The two main types of air conditioners for household use are window-wall systems and split systems. While both can be equally efficient, split systems tend to be more efficient for a particular size range as their components are generally less constrained by size. Split systems have the advantage of being quieter indoors during operation but they are also more expensive.
I will go for the split system for its quiet operation and flexibility in installation
no matter what improvements have taken place, the split type will always be more energy saving, since the whole concept of airconditioning depends on how well the warm and cool areas are insulated. With a split-type airconditioner the insulation is the best possible, with only a small pipe joining the two parts. In a window unit the entire unit, which usually has a rather large area, serves as a heat inductor and worsens the insulation.
Most efficient is inverter type. converts AC to pulsed DC applied to an induction motor to drive the compresser
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