[doubled112]

I'm in Canada in a house built in 2012. Attached garage - my living room is above it.

The breaker panel is in the garage so it'd be easy to add, but my only 220V devices, the dryer and stove (along with their outlets), are inside the house.

I've never heard of a dryer in the garage before. It isn't heated, and in winter months, it's cold enough that snow doesn't melt. Would that have an effect on drying my clothes?

[bdcravens]

They'd probably still dry, it just may take more energy, depending on your dryer.

Funny enough my internal dryer can cause my clothes to be damp, as the exhaust runs to the attic instead of directly outside, and the moisture can come back into the dryer. (can be overcome by installing an active exhaust fan)

[fsckboy]

you can dry clothing by hanging it on a line outside in winter, the vapor pressure of ice is a positive number. So, yes, your dryer will work in the garage.