KleenWater 877-553-3698

Tankless and Hot Water Filter Protector Cartridge, 2 1/2 x 20 Inch


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Kleenwater  2.5" (W) x 20" (L) Hot Water Protector Water Filter for Scale Prevention and Corrosion Protection


-Protects tankless hot water systems and helps avoid costly service calls

-Polyphosphate filter to prevent scale and reduce the harmful effects of water hardness

-5 micron dirt rust sediment filtration

-Creates a thin glass-like layer to provide corrosion protection



This filter cartridge kit is the replacement for our Kleenwater KW2520-scale-X System and for other hot water protector systems that require a 2.5" (W) x 20" (L) replacement filter.


The water filter cartridges are made of food grade wound cotton that filters sediment to 5 microns. However, the critical feature that provides the essential protection to tankless systems is the phosphate ingredient. This ingredient reacts with naturally occurring calcium bicarbonates in the water supply to form a thin, tight, non-corrosive, passivating film on pipe walls. This film is almost like a glass coating, separating the water from the metal plumbing/hot water system.

This system will prevent scale build up and reduces the harmful effects of water hardness. Pre-filtration is required to prevent damage to expensive tankless systems and help to avoid costly maintenance calls.


This item consists of (2) 9.75" filters and (1) 1/2" coupler which creates the 20" length required.


Model: KW2510SWHT(2)-coupler(1)p

  • Model: KW2510SWHT(2)-coupler(1)

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