Circulator with permanent magnet rotor is of high efficiency and uses only 45 watts with high performance of 20 feet by 18 gpm. Stainless replaceable cartridge can be replaced and is sustainable as a green product. The Iron Guard Design protects against black iron oxide and contaminants. A system iron filter is not required. The pumps costs less than an iron filter. Fully automatic operation, no programming, no buttons to push, no speed setting, with LED light and watt display, 10 feet detachable line cord and cord connector included, flange with nut capture, built-in check valve. US built, tested, ETL listed.