We couldn't be happier with this little spa. For the price and size, I don't think you could ask for more. We have had it since July 1st and haven't noticed any real increase in our electric bill, but we are in Florida so I'm sure that helps. We use Bromine rather than Chlorine and so far the chemical upkeep has been very easy and affordable.  If you are looking for a true therapeutic spa, this isn't it. If you are looking for a inexpensive, fun, relaxing spa to sip a glass of wine in with someone special, you have hit the jackpot.