How to save Electric bill with AC

These tips may help you... 

If you haven't purchased an AC yet, go with an inverter ac if possible. The initial investment is more than a non-inverter one, but on a long run, it will provide significant savings on your electricity bill.

Clean the filters every two weeks, if you run them on a regular basis. A clean filter will allow smooth airflow to the coils and cool down the room quickly, resulting in power savings.

Set the temperature between 25-27 C. Please note, that setting the temperature at 18C doesn't make the air coming out of the vents cooler. It merely means that the compressor will continue to run till the indoor temperature drops to 18 C.

The amount of time the AC requires to cool your room depends on several factors, like....

• The area of your room.
• The area covered with glass (windows)
• Which floor you're on (if there are any floors above yours)
• If your room is facing east or west.
• How many electrical devices are operated in your room (TV, Fridge, Computer etc). They all emit heat during operation.

Insulation of your room (use heavy curtains and make sure there is minimum gap on the top and bottom of your doors and windows)

Number of occupants in the room.

Many people prefer to run the ceiling fan along with the AC because it circulates the cool air inside the room. I don't prefer that because..

When you run the ceiling fan, the heat from the ceiling is pushed below which negates the cooling effect of the AC and so the AC will have to run longer. This is especially more prominent, if you live on the top floor with the terrace right above your room.

With the ceiling fan running, the dust within the room circulates and accumulates on the AC filters. So it's also important to keep your room as clean and dust free as possible.

Instead of switching the AC ON & OFF repeatedly, set the temperature at a comfortable level, i.e. 25-27 C (this will depend on the factors mentioned above in point # 4 a - g) and let it run. Everytime you switch off and back ON, there is a spike in electricity consumption (This is the reason why Inverter ACs are power efficient, they never switch OFF their compressor but makes it run at a lower intensity, saving power)

Avoid opening the doors of your room too frequently, every time you open the door of the room, a gush of warm air gets inside the room thereby increasing the ambient temperature and making the AC run longer.

I have seen people installing Window ACs at a much lower level on their walls (around 1-2 feet above the floor). This is a bad position because warm air is lighter and rises up towards the ceiling. So if you have the Window AC placed at a lower height, the cooling will not be quick as it will struggle to pull in the warm air from the top.

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