Kind Water SystemsE-4000UV City Water Salt-Based Softener and Filter Combo with UV
Kind’s fullest city-water build: carbon, true salt softening and NSF/ANSI 55 UV, with tanks and a drain.
$3,765
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Usability
Usability
This is the most treatment Kind will sell for a municipal supply, and it suits a household that wants certified disinfection alongside genuine ion-exchange softening rather than conditioning. Its strongest attributes are the two stages that carry real performance certification: an NSF/ANSI 42 carbon bed rated around five years or 600,000 gallons, and an NSF/ANSI 55 UV chamber in a 316L stainless body. Metered softening removes up to 99 percent of hardness with regeneration triggered by measured use, and the resin is quoted at 15 to 20 years. The weakest attribute is that this configuration inherits every constraint in the range at once. It needs floor space, a drain, a brine tank refilled every four to six weeks and a 110V outlet, drops to 12 GPM, and adds an annual UV lamp and sleeve to the running costs. Kind still publishes no grain capacity for the resin bed and no dimensions for the assembled system, which are the two figures a buyer at this price most needs. At close to four thousand dollars at list it is priced against dealer-installed equipment from brands with published capacities and longer service histories. The trade is simplicity and running cost for the widest treatment coverage Kind offers on city water.
- NSF/ANSI 55 certified UV chamber in a 316L stainless body with quartz sleeve
- NSF/ANSI 42 certified carbon bed rated around 5 years or 600,000 gallons
- Metered ion exchange removing up to 99 percent of hardness, with resin quoted at 15 to 20 years
- Bluetooth smart valve with 9V battery backup
- 10-year warranty on the mineral tank and 7 years on the control valve, plus a 120-day satisfaction guarantee
- Kind's most expensive city-water system and no grain capacity is published for the resin bed
- Flow drops to 12 GPM against 15 GPM on the wall-mounted E-series
- Needs floor space, a drain line, salt every 4 to 6 weeks and a 110V outlet
- Annual UV lamp and quartz sleeve on top of sediment cartridges and salt
- Assembled dimensions and weight are not published anywhere on the product page
- Kind advertises a lifetime warranty sitewide; its own terms cap this system at 10 years on the mineral tank and 7 on the control valve
The E-4000UV adds Kind's 50-watt UV chamber to the E-4000's sediment, carbon and metered salt-based softening stages. The UV module is 316L stainless steel with a quartz sleeve, certified to NSF/ANSI 55, and needs a 110V outlet plus annual lamp and sleeve replacement. Filtration and softening are unchanged, so the system still runs 12 GPM on 1 in MNPT with a drain line and brine tank. It is Kind's most expensive city-water configuration.
Additional information
Specification: Kind Water Systems E-4000UV City Water Salt-Based Softener and Filter Combo with UV
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Questions answered from our data

How much does a UV water filter cost?The 35 systems with a UV stage we list run from $169 to $6,640, with a median of $995.
How long do UV filters last?Of the 35 systems with a UV stage we list, 34 state a filter life; the most common is 6-12 months (28).
Do water filters remove chlorine?217 of the 296 systems we list claim to reduce chlorine.
Do water filters remove hard water?36 of the 296 systems we list claim to reduce hardness.

