Recently I have purchased blue star 0.75 ton AC. As my room size is not so big, so it is enough for my room. Cooling is really awesome. As it is having capacity of 0.75 ton its size is small and it take low power as compare to other AC. As it is window AC it makes sound but not so much louder. It takes around 900 watts power. Blue Star is a well known brand and it is reliable. Service support is also very good. As it is a new AC I have got 5 years warranty of compressor from company side. It is a good AC for small areas not for big area. Overall it is a good AC for small area.