I have said a few times before on my blog how important maintenance is , especially here in Thailand where we have lots of rain and then hot and humid, it takes it toll on things , and a/c units are no exceptions and need a lot of attention, if you want to have clean fresh , cool air when you need it , nothing worse than to turn on a/c and smell a musty odour coming out of the air vent , because of dust and mildew and who knows what. We have our A/C unit cleaned and checked twice a year.I have stayed in a few motel and hotels in Thailand and elsewhere , when the smell was worse than the heat lol. We try to put a maintenance schedule on everything and Ciejay checks it once a month to see what we need to have fixed or maintained during the month. Sorry to say that most folks here in Thailand forget that stuff needs checked for cleaning , oiling , or general maintenance and you can see lots of things broke and laying around the side or back of the house that would have lasted for years if only a little TLC had be included in the owning of it . We have lived in our home with all of our stuff we bought 9 years ago and have only had to replace a few light fixtures that were in the house when we bought it.The stuff we bought new , takes a licking and keeps on ticking , with a little attention and maintenance. I hope you are like us and value the stuff you have spent your hard earned cash on and have learned that you can enjoy it for a long time with a little care , and you know what ?? it's never to late to start.