Laundry room is a horrible idea. TOO much moisture from doing laundry, especially if you dont have a newer dryer with good seals. The moisture will create corrosion/mildew inside the electronic components. (switch etc...)
My washer/dryer are new and my laundry room has vents in it so it's heated and cooled with the rest of the house. We also use it as a storage room anyway so it has a little bit of everything in it.
