I purchased a Royal Sovereign 9000 BTU Portable Air Conditioner. This is the kind that doesn't mount in a window, and is on casters. (I can't use a window unit where I live) The unit works, but I'm disappointed that it is rather noisy. I have a Radio Shack Sound Level Meter and at the "A Weighting" setting (the less sensitive setting) I"m getting a measurement of
62db at around 3 feet from the unit. Believe it or not, the fan itself makes most of the noise (at the lower speed) and the compressor only makes a 1 or 2 db difference. There is no published spec for noise on the unit I bought.I notice that there are other units that are advertised as having lower sound levels, such as the "Edge Star 9000btu" which is said to have a noise level of less than 54db, and the "Delonghi PAC-03" which is said to have a noise level of 50db or less.
Is it likely true that the above two units are actually 8 to 12 db quieter than mine? I'd hate to go through the trouble of returning the Royal Soverign only to find that the published specs on the other two units are false. Should I return the Royal Sovereign and try one of the other units? (Keep in mind that this it will be a major pain in the neck repackaging this thing and returning it to Sears, and the other units are only available to me via UPS or Fedex shipping.)
Thanks,
J.