Buying a AC is no easy task, With so many brands to choose from and varied reviews of each if you ask the Dealers or check online.
But more than the Initial Cost the Electricity Bill(running cost) associated with the AC is what actually hurts. So recently I had to make the same decision in buying a second AC. I already own a Hitachi Window AC. Here are some points that I found out and a little JavaScript calculator which I wrote which helped make up my mind -
Try to go for Split AC , they are much quieter and more efficient though come at a higher Initial Cost. The Hitachi window I have makes me feel like sleeping next to a running vehicle !!!
The Total ownership cost difference over 5 Star rated and 3 Star Rated AC over a course of 5 years is almost same usually. But 5 star rated AC’s are about 20 % more expensive than 3 Star ones when buying the AC ( but this 20 % is paid back over 5 years in most cases). You can check using the calculator below.
More expensive does not mean itll recover its cost in Electricity Bill as some companies state. Do the calculations yourself and you will see.
Avoid the Cheapest ones out there, there is a reason they are cheap !
Most big terms like AntiBacterial filters, Night mode,Ion Purifiers etc are nothing but terms to attract you. You should just look at appropriate cooling capacity and running costs. As most of us just Switch them on and forget about them.
Here is a small calculator I wrote based on a Thread from TechEnclave which will help you check running cost of an AC and the total ownerships cost over a period, use the calculator below to decide if the AC is worth the extra money or which one is better -

Have to agree… split air conditioners are a cheaper option and quieter than duscted systems. Particularly at night.
The only issue is if you have many rooms to air condition, having many condenser units around the outside of your house as oposed to one duscted unit doesn’t look the best.
Cheers,
Warren
I agree, Buying a AC is no easy task, With so many brands to choose from and varied reviews of each if you ask the Dealers or check online. Calling of professionals are also good ideas as they can give us much of ideas that we can then use when choosing and buying air conditioners.
Can u tell me which brand is better???? Voltas or LG and why?
Both are same , just ask your local distributor for service information.
I went for LG as it had some “Neo Plasma Plus” which is good for allergies.
@ Vikas Patial Thanxxx for ur reply… I am now planning to buy a LG One/……. Thanxxx for ur informative reply once again
Glad to help.
m planing to buy ac.which consumes less energy.colling faster.and service is better than others. which brand is best….?tell me…
and the warranty time is long……..
Interesting observation about 5 star and 3 star rated ACs. It seems like a lot of people are trying to reduce their utility bills. Great job on the calculator too.
When buying air conditioner you should also consider power consumption for each brand because it affects your electricity bill. Do you know that there is a secret method (which the electric company hides from you) to reduce electricity bill with simple earth grounding? It is basically the same as utilizing tamed lightning to light up your house.