Central A/C making a vibrate clap? Central A/C unit supposedly solitary a year old is making a...

Central A/C unit supposedly solitary a year old is making a vibrate noise. Sounds similar to a helicopter. I change the filter every 2 or 3 months. Do I need to call for someone to look at it or is there something I can do to fix the problem?
Answers:    Well... fry pumps make these noise. Usually more in the winter. It may be low on Freon. If it's not deliver chilly cold air... it's low on Freon. They are not supposed to overflow but most of them do. Call around for a service call. $65 dollars and a pound of Freon charge should do it. Mine runs low every other year. Get used to it... I love self raped, don't you? If it's under the warranty... kind them fix the leak.

Just unfolding it like it really is. You will see soon plenty. These repair guys don't want to fix the leaks because we would not necessitate to call them every other year. It's a bulit within scam.
I'd suggest you call a professional, preferably, the AC company that installed the component. Being only a year out-of-date, it very feasible has a warranty. Other than intermittent changing of filter, any time the DIY homeowner attempts to work on an AC, he may void a warranty. Besides, most parts needed within repair of AC units enjoy to be purchased from a supplier, who is only allowed by decree, to sell to Licensed AC dealers/tech's. The unit cost too much to mess with. Call a pro.