The symphony coolers are best coolers for indoors during the summers. I live in Delhi and during the peak of summers sometimes even AC’s are not able to cool you down.ladt year I bought a cooler of symphony company.Earlier I used to buy those big bulky metal coolers for cheap price and they only use to last for about 2 years.After that we had to buy a new one.so last year I bought symphony cooler for around 11k .yes , it was costly but trust me guys , the quality of cool air it pumped out , felt like worth every penny.also the cooler was very light weight and could be placed at any part of the house.so I think symphony coolers have vey good cooling technology and are durable during summers.