I bought general ac 1.5 ton 6 months ago its very good in colling and make my room cool in just 1-2 hours and it remains cool for 40-50 mins after it switched off it had dual mode now in winter it works as heater its very good in heating too but 2 things are bad about it it is not turn on automatically when light comes back I m very upset and talk to general ac company they are saying its manufacturer like this second thing it make a very bad sound when it turn on or off I thinks I waste money because no one like to wake up again again to turn it on if lights turn off after 2 hours