This is my second Bio Bidet.  This Slim Two model has more functions.  And here in lovely Minnesota having a nice warm heated seat and warm water use...is a real comfort.  Truly think everyone in cold climates would love this Bio Bidet...yes my house is heated but a never enough on the 2nd floor.    Plan to make a Slim Two a gift for my sons birthday he had purchased cold water spray hose for his toilet...can not image using COLD warm.