Product review (5 stars): It really does work!
So glad other reviewers were right...this thing has made a world of difference in our laundry room. I wish I could say I noticed utility costs dropping, but our 1960 home is like the Titanic here in Minnesota...one thing at a time and eventually we may be able to stop the leaking! But this was an instant big improvement...no more cold floor or cold air in there...especially nice when a load in the drier has an item you want to wear but the clothes sat in their all night in January. Installation was a snap, but make sure you have the proper drill bits for going through the exterior of your house and don't forget to use caulk or foam adhesive to seal the holes you make!