Spot Free Water Filters will eliminate the majory of the elements that cause hard water spotting. These Spot Free units are easy to use and re-charge. If you need some extra time while drying a car off after you have washed it our Spot Free Water Filters can really help you out! The Spot Free® portable water filter and water softener system removes chlorine, ammonia, and hard water minerals - such as iron, calcium, magnesium - for use on all vehicles, in the home and for improving drinking water. Spot Free® will provide a virtually spot free wash down on vehicles, but more importantly, will extend the life of plumbing, fixtures, water heater elements, icemakers, etc., on boats and RV's. The Spot Free® water filter and water softener system has been tested and proven by the International Yacht Industry. Designed explicitly for the treatment of POTABLE WATER, using the system to fill the tanks of a boat or RV saves time and money on costly maintenance. Spot Free® water filter's unique design makes the unit not only convenient and portable, but also allows the unit to handle high flow rates without any loss of pressure! The water source can be connected at either end of the filtering unit, the filter can be used in either direction. Although the system will require periodic regenerations, the instructions are easy to follow and it is simple to do. By using the easy to follow instructions, and pure pelletized water softener salt, regenerating the unit will only take approximately 10 - 15 minutes. With proper care and regeneration, the Spot Free® water filter and water softener system will last for years and is environmentally friendly!