HydroSil has been on the market for 30 years and have always taken our customers complaints VERY seriously. We offer a full life time warranty on our products and if defective, we DO replace that unit. A customer that receives a defective unit is taken care of immediatley, no if's or but's. We encourage ALL of our customers who are having issues with the Hydro-Sil unit's to call us at 1{800} 627-9276 to take care of the issues they might be experiencing. Our Life Time warranty is a Full Life Time committement from Hydro-Sil for there comfort needs.