🧾 Overview The SoftPro Whole House Upflow Carbon Filter review is a low-maintenance upflow tank-based filter with a lifespan of about six to ten years, or 600, 000 gallons to 1,000, 000 gallons of water. In this SoftPro water filter review, we’ll be sharing everything you need to know about the system’s specifications, features, performance benefits, setbacks, maintenance requirements, and more. Our Rating 4.