Actually if you read some of the posts made by the OP, it was measured and apparently it's just a bit over the legal limit of where it should be, that is if it was measured correctly, then again if By-law was out there and on several occasions, I am sure they would have measured it and written an order of compliance to have the unit moved, I have to wonder why this was not done...
But I am curious on one thing OP, you say he is in contravention of a "Noise By-Law" really ? where is this By-Law, I don't think I have ever heard of a noise By-Law being used against an air conditioner.
Can you point this out for me in the By-Laws for your City
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Noise bylaws normally include the vague "though shall not disturb" or "clearly audible" in addition to any other points.
In Kingston's case
4.1 No person shall, at any time, make, cause or permit the making of noise within the City that is the result of any of the activities described in Schedule A and that is audible to:
(1) a person in a premises or a vehicle other than the premises or vehicle from which the noise is originating; or
(2) a person in a residence other than the residence from which the noise is originating.
(By-law No. 2004-52)
A quick review of their schedule A does not list A/C condensers as a source, so it shouldn't apply.
As an example of one that deals specifically with A/C (Markham):
http://www.markham.ca/NR/rdonlyres/B2B44081-0736-46E0-8575-4614679082CA/0/bylaw_2003137_080905.pdf
No person shall emit or cause or permit the emission of sound resulting from: . . .
(3) from any air conditioning device of a type referred to in Schedule 4 - Publication NPC-216 unless the device:. . .
Vaughan noise bylaw
8. AIR CONDITIONERS, HEAT PUMPS, AND SIMILAR DEVICES
No person shall use or operate or cause to be used or operated any residential air conditioner, heat pump, or similar device, the noise from which has a level greater than 61 dBA when measured at the point of reception.