Does a standard inline RV water filter protect your plumbing from hard water? This episode explains the difference between filtration and ion-exchange softening, then explores grain capacity, campground water hardness, advertised flow rates, storage clearance, hookup order, regeneration, and cold-weather care. Learn which factors matter when comparing portable RV water softeners and why the right choice depends on your rig, water use, and travel conditions. Always follow the manual for your exact model before setup, regeneration, or storage. Read more: 10 Best Portable RV Water Softeners: Capacity, Flow Rates, and Easy Regeneration on the Road