10 Best nsf 44 certified water softener

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Last Updated: 11-29-2025

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North Star NSC42 Water Softener | 42,055-Grain Capacity | AutoSense Salt-Saving Technology | For Homes With 1-6+ Persons | NSF Certified to Reduce Hard Water Scale (NSC4218)

North Star

9.8

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- 6%

iSpring WCS45KG Whole House Water Softener System, 45,000 Grain High Capacity with Backwash Feature, SGS-Tested, for Homes & Businesses

iSpring

9.6

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Best Value

- 17%

Aquasana SimplySoft® 60,000 Grain Water Softener - Whole House Hard Water Reduction - Base Tank & Cabinet System WH-SF60-BASE

Aquasana

9.5

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Kenmore 420 Water Softener System – 40,000 Grain Capacity with Salt Saving Technology – Whole Home Hard Water & Iron Reduction – Compact, Easy Install

Kenmore

9.2

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Fleck 5600 SXT Meter Demand Water Softener Grain Capacity 10% Commercial Grade Cation Resin (64,000, Black)

DuraWater

9.1

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Aquasure 48,000 Grains Whole House Water Filter Bundle with Automatic Digital Metered Control Softener and 75 GPD RO Reverse Osmosis Drinking System | Removes Hardness | Ideal for 3-4 bathrooms

Aquasure

8.8

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- 17%

Aquasana SimplySoft® 40,000 Grain Water Softener - Whole House Hard Water Reduction - Base Tank & Cabinet System WH-SF40-BASE

Aquasana

8.6

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Fleck 5600sxt On Demand Water Softener with Resin Made in USA/Canada (40,000 Grains (Black))

Discount Water Softeners

8.4

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- 10%

Aquasure Harmony Series 50,000 Grains Whole House Water Softener with High Performance Automatic Digital Metered Control Head | Reduces Hardness & Minerals | Improve Water Quality | for 4-6 Bathrooms

Aquasure

8.2

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- 8%

Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)

Aquasure

8.1

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North Star NSC42 Water Softener | 42,055-Grain Capacity | AutoSense Salt-Saving Technology | For Homes With 1-6+ Persons | NSF Certified to Reduce Hard Water Scale (NSC4218)

iSpring WCS45KG Whole House Water Softener System, 45,000 Grain High Capacity with Backwash Feature, SGS-Tested, for Homes & Businesses

Aquasana SimplySoft® 60,000 Grain Water Softener - Whole House Hard Water Reduction - Base Tank & Cabinet System WH-SF60-BASE

Kenmore 420 Water Softener System – 40,000 Grain Capacity with Salt Saving Technology – Whole Home Hard Water & Iron Reduction – Compact, Easy Install

Fleck 5600 SXT Meter Demand Water Softener Grain Capacity 10% Commercial Grade Cation Resin (64,000, Black)

Aquasure 48,000 Grains Whole House Water Filter Bundle with Automatic Digital Metered Control Softener and 75 GPD RO Reverse Osmosis Drinking System | Removes Hardness | Ideal for 3-4 bathrooms

Aquasana SimplySoft® 40,000 Grain Water Softener - Whole House Hard Water Reduction - Base Tank & Cabinet System WH-SF40-BASE

Fleck 5600sxt On Demand Water Softener with Resin Made in USA/Canada (40,000 Grains (Black))

Aquasure Harmony Series 50,000 Grains Whole House Water Softener with High Performance Automatic Digital Metered Control Head | Reduces Hardness & Minerals | Improve Water Quality | for 4-6 Bathrooms

Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)

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