Do you worry about your electricity bill when the AC runs long hours all day and overnight? Now you can calculate what your AC costs you each year in electricity and how much you can reduce your electricity bills by using a 5-Star rated AC. Did you know you can recover the additional cost of a 5-star AC in less than two years? The AC Power Saver mobile app is a simple four-step calculation, which can be done for home premises or office complexes (since electricity tariffs in India are very different for each) in pre-defined cities. You can select ACs for multiple rooms and then easily calculate annual expenses and savings based on your annual usage pattern. The app can be used multiple times for different premises or a different combination of ACs. So go ahead and play with it! Let us know what you think.