I have purchased this 19 liter air cooler last year. Till now its working fine.It needs power of 135watt which is equall to two ceiling fan.Pros : It cools your room as soon as it starts. You can add ice cube in water tank for best result. It easily lasts 3days after refilling water. No noise type sound come while using. It has 3 mode of fan. Fast, mid, low.It has indicator sign for water level- high, mid and low.I am very satisfied with this product. It performs well till now. No doubt on it’s reliability.I bought it at 8000Rs which was a good deal.Cons: Only one con it has. Usha should provide remote control for easy access.Overall good cooler at this price range. You can not expect more.