Rheem Prestige® RTGH-RH11DVLP-2 is a high efficiency condensing indoor liquid propane tankless water heater designed for continuous hot water. The recirculation pump with auto-learning programing not only provides instant hot water but also only provides it when needed. Industry leading low flow activation with a minimum flow rate and minimum activation flow rate of .50GPM. Ultra Low NOx burner meets SCAQMD rule requirements of safety for low emissions. Additional safety features include flame sensor, overheat cut off switch, gas and water leak detectors, and exhaust and water temperature sensors. Venting up to 100’ with 3” PVC or up to 50’ with 2” PVC pipe. Can be used with up to 5 bathrooms depending on inlet temperature; .94UEF (.96EF Canada), 199,000BTU efficiency.