Bought a Bissell 25A3, Don't bother. I bought it because it heat up the water, a good sales pitch. If you like filling and emptying the tank for every 4 square feet, then this is your model. The carpet was so wet after using this carpet cleaner, I was worried about the floor boards warping. The unit has one tank with a bladder in it, clean water and soap go into the bladder. My opinion is that as the bladder shrinks (clean water is put on the carpet)it impedes the suction of extracting the water out of the carpet. Called... read full review »