Lynn
Mine quit after 14 months. They were good to deal with but after 1 year you have to replace it yourself. Replacing it is easy but in my '09 BH 3250, you have to remove basement contents and remove the angled wall because it is located below the shower.
This is the way they do the replacement; they send you a new one BUT you give them a credit card to cover it's cost. When you send them the old one they determine if it is faulty. If it is faulty, you will not have a charge.