Product review (3 stars): however the pros had something just like this and they went up though the laundry room ...
In order to use this product, per the instructions you need to go to the outside vent and go into the laundry room, my vent is on the roof a tall roof at that, so I ended up having to call the pros, however the pros had something just like this and they went up though the laundry room and climbed up on the roof afterwards to check the vent..