Brand new Purcooflow WHF25V whole house LED UV water filter system. Mercury-free UVC-LED sterilization with instant-on smart flow sensor that only runs when water flows, no preheating needed. Up to 12 GPM flow rate, whole house coverage for 1 to 4 bathrooms. LED module lasts up to 11 years with no bulb replacements. Chemical-free purification, 3/4 inch NPT ports. Compact wall-mount design, 1+1 year warranty.