An air conditioner comprises of three main parts, which are condenser, evaporator and compressor.
In a split AC the condenser and the compressor are placed in the outdoor unit.The evaporator is located in the indoor unit which cools the room.
The window air conditioner is a single unit installed having one face inside and the other faces outside in a window or a gap. The inside part contains the filters, evaporators, fans and control panel whereas the outside portion contains the compressor & condenser.
The split AC and window AC are both equally efficient. The efficiency depends on various factors, like atmosphere, insulation and not on type of the AC.
Below are some of the differences which should be kept in mind before buying an AC.
DIFFERENCES BETWEEN SPLIT AC AND WINDOW AC
In Window air conditioners heat exchangers, compressors, condenser motors and connecting pipes are placed on the same base.
Split ACs consist of indoor and outdoor unit.
Window ACs occupy more space than split ACs.
Window AC installation is easier than Split AC.
Cost of equipment and installation cost
A split AC costs more than a window AC of same capacity and similar energy star rating.
The installation of a split AC costs more as you need to install two units-one indoor and one outdoor, which then need to be connected through copper tubing. There are other costs for accessories which might be needed for split ACs which include copper tunes and mounting tubes.
Unistallation of split AC and installation of the AC actually needs to refill gas. This also adds to the cost of installation. Window ACs do not refilling of gas when it is uninstalled and again installed at a new place.
Multiple cooling units are in split ACs, single outdoor unit can also cater to multiple indoor units. Window ACs have only one compact unit.
The running cost of window and split for same energy rating is similar. There is no benefit of AC type, the split AC might use a little bit extra electricity but the difference is not enough to affect buying decision.
The split AC makes lesses noise as the compressor is located in the outdoor unit that is not in the room. If you are light sleeper, prefer split AC over window AC.
Window AC is easier to service than Split AC.
Generally the maximum capacity of Window AC is 2.0 Ton whereas for Split AC there is no such restriction.
The buying preference in India has been more towards the window AC since it is cheaper. But this is changing as split ACs have more options and better designed.
Both split and window ACs are equally effective.
Nowadays split AC are getting more popular and brands like Bluestar have stopped manufacturing window ACs. There are more choices in split ACs though they are more expensive. However you should check the feasibility also based on where you stay as the room will define if a window or split AC installation may be cumbersome.