Energy Efficient Air Conditioner at Amazon India. If you are looking for an Air Conditioner that is high on efficiency but low on Energy consumption then buy Carrier 18K Estrella Neo Window AC from Amazon India The elegantly designed White coloured Window AC comes with latest features. This AC has an energy efficiency certification of 5 Stars. It has a capacity of 1.5 Ton and also comes with one-year warranty on the product and five-year on the compressor. The AC keeps your family healthy and safe.The Advanced 4 in 1 Filters is made of Electrostatic Filter, Dust Filter, Zeolite Filter and Carbon Filter which removes dust, pollens, gases , odour and Bacteria. This ensures fresh, clean and healthy air in your living space. The Exhaust Command ensures the room is constantly supplied with clean Air. The 5 star certification means the AC saves energy under various modes, a special feature being the Fan motor shuts off whenever the compressor is switched off. Special Features: The Carrier Window AC Super Turbo mode Cools the room evenly with help of Auto Swing as it has Louvers on the vertical and horizontal bar. The AC has Auto Restart function which helps you sleep uninterrupted in case of power cut and restarts on previous setting. The AC also comes with Dry mode, sleep mode, On and off Timer. When the sleep mode is activated the AC automatically adjusts the room temperature as per the body’s metabolism and saves energy. The Nexgen Dehumidifier helps in reducing the humidity level in a room. The I-Detect Technology enables the AC to shut down in case of any errors which is then displayed as per code. The 5 layer coating of the exterior and interior of the AC increases durability of the product and ensures that it is rust free.