Check your portable unit for its fan control. The low or lowest speed setting is much quieter than the other setting(s). IMHO, the continuous low speed fan setting provides the best of all Worlds as it maintains a base noise level and provides a more balanced temperature.
The noise of 'window shakers' (portable air condition) is just that, the vibration of the window frame and the projection off the glass surface. Near all big box stores and most local hardware supply stores will have an AC mounting device that is mounted on the window sill and supports the bottom of the AC unit. This greatly reduces the overall noise level as majority of vibration is directed into the framing and not the window itself.
Note: Setting the AC unit at Max Cooling will not cool the area any faster than setting it at a target temperature and let the unit come to that temperature and the end result is the same. Plus, you do not over the cooling mats for dogs[/URL] the area.
Ontario shares climate conditions from several regions depending on wind directions and the flow path of the Jet Stream. In short, your weather varies greater than near everyone in North America. That said, because Ontario spans over three to four climate regions, providing 'Weather' advice to anyone in Ontario requires knowing their location since there is a vast difference between being North of Lake Superior or North of Lake Ontario.
As Scott so very well stated, once your Parrot acclimates to your Weather conditions and you follow his directions your Parrot will suffer no more than the locals.

Your Parrot will drop tons of downy feathers late Spring and during the Summer and will grow them back in the Winter. We target what we are comfortable with and find our Amazon to be as comfortable as we.
Winter time is more an issue with Parrots as a result of the very low humidity levels in the Great White North.