Kind Water Systems E-4000 City Water Salt-Based Softener and Filter Combo
Real ion-exchange softening plus carbon filtration on city water, at the cost of tanks, salt and a drain line.
$2,706
Usability
The E-4000 exists for the buyer who read the E-3000 page, understood that salt-free conditioning does not remove hardness, and wants water that actually tests and feels soft. Its strongest attribute is that it delivers on that: metered ion exchange removing up to 99 percent of calcium and magnesium, with regeneration triggered by measured use rather than a timer, which saves both salt and water against a clock-based softener. The carbon bed is a real upgrade over cartridge carbon too, rated around five years or 600,000 gallons instead of six to twelve months, and NSF/ANSI 42 certified for chlorine, taste and odour. The weakest attribute is that it abandons everything that makes Kind distinctive. It needs floor space for tanks, a drain for backwash and regeneration, a brine tank refilled every four to six weeks, and it drops to 12 GPM from the 15 GPM the wall-mounted systems hold. Kind does not publish a grain capacity for the resin bed, which is the single number a softener buyer needs to size the unit, and no NSF/ANSI 44 certification is claimed for the softening stage. At this price the E-4000 competes directly with established tank softeners from brands with longer track records and published capacities. The trade is convenience and footprint for genuine hardness removal.
- Metered ion exchange removing up to 99 percent of calcium and magnesium, so water genuinely tests soft
- Backwashing carbon bed rated around 5 years or 600,000 gallons instead of 6 to 12 month cartridges
- NSF/ANSI 42 certification on the carbon stage for chlorine, taste and odour
- Bluetooth-controlled smart metered valve with 9V battery backup that halts regeneration safely on power loss
- Resin quoted at 15 to 20 years of service life
- Lifetime limited warranty plus a 120-day satisfaction guarantee
- No grain capacity published for the resin bed, which is the number needed to size a softener
- Flow drops to 12 GPM against 15 GPM on Kind's wall-mounted systems
- Requires floor space for tanks, a drain line and salt refills every 4 to 6 weeks
- No NSF/ANSI 44 certification claimed for the softening stage
- Softener discharges brine to drain, unlike every salt-free system Kind sells
- Dimensions and shipping weight are not published
The E-4000 is Kind's city-water system for buyers who want real ion-exchange softening rather than conditioning. Three stages combine a 5-micron sediment cartridge, a backwashing carbon bed rated for roughly five years or 600,000 gallons, and a metered salt-based softener with Bluetooth control and 9V battery backup. Unlike the E-series manifolds it uses floor-standing tanks, needs a drain and a brine tank, and runs 12 GPM on 1 in MNPT. Resin is quoted at 15 to 20 years and salt refills at four to six weeks.
Additional information
Specification: Kind Water Systems E-4000 City Water Salt-Based Softener and Filter Combo
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