Zilmet ActivFlo Water Conditioner
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$567.33at Plumbing DepotObserved Nov 4, 2026, 5:42 PM
Compared across 5 stores. Prices are checked against each store and labelled with when.
Compared across 5 stores. Prices are checked against each store and labelled with when.
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The Zilmet ActivFlo is a whole-house, non-electric water conditioner that uses a stainless steel housing filled with insoluble aragonite crystal media. It does not soften water or remove minerals; it changes how limescale forms so it is less likely to stick to pipes and heating equipment. It handles flow rates of 1.9 to 5.9 GPM, connects with 3/4-inch MNPT fittings, and is rated for water from 35 to 180°F. The best new price is $567.33 at Plumbing Depot as of November 4, 2026, with 5 stores listing it new.
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Lowest price we've seen: $567.33 on Nov 4 at Plumbing Depot. Tracked across 12 stores since Nov 4.
Owners of catalytic and template-assisted conditioners like this generally report less crusty scale on fixtures and heating elements, but results vary with water chemistry. Many note it is not a softener and does not change how water feels or lathers.