The AP19863B Rheem Blower Assembly is a pump designed specifically for use in hot water systems. Manufactured by Rheem, a trusted brand in home improvement, this model is known for its quality and reliability. This blower assembly is designed to efficiently pump water through the filtration system, ensuring clean and filtered water for household use. With the AP19863B, Rheem continues to provide innovative and efficient solutions for plumbing and water filtration needs.