Thanks Robbie for suggesting this Clean Air Foundation recycle program.
This year, the Clean Air Foundation in sponsorship with Toronto Hydro and partnership with The Home Depot Canada are recycling old, inefficient air conditioners for free and giving out a $25 Home Depot gift card in exchange. There is no limit to number of ACs  you can bring in.
Click here for more info & Home Depot Locations
This is a good offer to bad it is not in Manitoba. We are planning to change out ours. Only in Ontario.