UV has proven to be a quick, reliable, and cost-effective method of water treatment for both point-of-use (POU) and point-of-entry (POE) systems. ISpring UVF55FS UV water filter protects the whole house against impurities commonly found in private wells as well as city water. For houses with municipal water sources, this UV light water filter provides a great solution against chlorine-resistant impurities so that you and your loved ones get clean water for drinking, washing, showers and more. As the UPGRADED VERSION of UV water filter iSpring UVF55, UVF55FS is a perfect last step to add to your whole house water filtration system and give you the peace of mind of knowing all of the water in your house can be treated at once. Ensured actual treatment with water’s long dwell time in the 37.5-inch 304SS reactor chamber; a 12 GPM flow rate and minimum pressure loss with 1-inch MNPT inlet/outlet design. A quality 55-watt UV lamp(UVB55FS) in durable quartz sleeve has a long bulb life of up to 9,000 hours; upgraded 55W ballast(UVT55FS) with smart flow sensor switch. (3 modes: “Auto”, “Move”, “Stop”) makes it easy to control and monitor system performance. Mounting clips included for easy DIY installation. Annual replacement of the UV lamp and regular cleaning of the quartz sleeve(every 6-12 months) recommended to ensure optimal performance. Chemical-free, Environmentally Friendly, and Affordable; a green alternative to chlorine removal treatments; free of purification byproducts. How Can We Help?