I bought Changhong Ruba 18 BMS model DC Inverter Ac, and it has disappointing Result, very average or below average cooling with very little saving in bills, I even registered a complain on their helpline their technican came and said your ac is fine iski cooling waise hi kam hoti hai, apko yee ac lena hi nahi chaie tha,may be others have better experience but my experience was very bad with this brand,