Here is the part the buy-Canadian lists never get to. When the category has no domestic option, you still have five moves, and they are not equally powerful.
Buy non-American rather than Canadian. This is the substitution nobody names, because it does not fit the patriotic frame. For a fridge or a washer, the achievable move is Korean, Mexican, German or Italian. Boycotting American-made and buying Canadian-made are two different goals, and in these six categories only one of them is available to you.
Keep the Canadian part of the job. On a renovation, labour is entirely Canadian, and so is a great deal of what gets fabricated locally — ductwork, countertops, cabinet boxes, trusses. You may not be able to buy a Canadian-built dishwasher, but the plumber, the electrician and the cabinet shop are all local spend, and on a full project they dwarf the appliance line.
Check the model, not the brand. Every regulated appliance sold here is verified and reported by model number under Canada's energy efficiency regulations, which is why the model number is the most useful handle you have — even though that reporting does not record country of manufacture. The spec sheet and the label on the unit will, more often than the sales listing does.
Repair or buy used. An appliance you fix sends no new money anywhere. This is the least glamorous option on the list and frequently the best one, particularly for laundry pairs, where a five-hundred-dollar repair against a two-thousand-dollar replacement is a common arithmetic.
Choose the retailer as a separate decision. Where the margin lands is a different question from where the unit was built, and you can answer both. A Korean-built dishwasher bought from an independent Canadian dealer keeps more here than the same machine bought anywhere else.
Here is the whole picture in one place.