The Aqua-Shield Hot Water Recirculation pump for outdoor installation is designed for use with outdoor tankless heaters. Outdoor tankless and pump installation saves expensive air intake and exhaust systems. The pump system saves up to 15,000 gallons of water. It is sprinkler safe, has a built-in timer, features automatic operation with thermostat/switch, is freeze protected and easy to service. AquaMotion | | Booth #732