[Exeric]

BTW, if you have an electrical diagram of your existing dryer, and are handy both in electrical and structural subjects, then you could kill three birds with one stone. My kind of stone. First you would wire the dryer blower with an additional manual mode switch isolated from all other functions of the dryer. This would require knowing how to modify it electrically so the power going into that blower does not backfeed into other dryer electrical systems. It might require either diodes or a multiple pole switch that turned off normal power to the dryer while applying power only to the blower.

Second, it might be possible to modify your existing dryer so there is duct connection that bypasses the normal intake vent.

If you did these two things then you wouldn't even need a separate blower.

1. You could use the dryer blower manually just to cool the attic. Hot air would run through the dryer but be unused to dry clothes.

2. You could use it to dry clothes when the attic is hot.

3. No external blower or wiring to it would be required. Just install the ducting. Cheap and simple. My kind of plan.


Edit: Did some research and it really isn't feasible to modify a dryer for makeup air. They just aren't air tight. It makes much more sense to air seal the laundry room and then run a makeup air duct to the ceiling of it from the attic. It could be as simple as replacing louvered doors with solid doors and putting a door wiper seal on the bottom of the doors. If you have a dedicated (small) laundry room then this is definitely the easiest way.