US
North Star

North Star NSC31 Water Softener

  • 31,300 grain capacity
  • AutoSense salt saving regeneration
  • NSF certified to reduce hard water scale
  • 20 gpm maximum flow, ultra high flow valve
  • 1 inch plumbing connection
  • Low salt indicator light
  • Bypass valve, drain hose, clips, clamps, elbow and grommet included
  • 1 year parts and labor, 3 year control board warranty

Updated 23 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A high capacity softener with NSF certification, salt saving regeneration and a high flow valve, sold with the hookup parts. The listing contradicts itself on whether it needs power.

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ASIN: B07XJV8NSYModel: NSC31

Overview

An AutoSense system times regeneration to actual need on this North Star NSC31 softener, which cuts salt use, and an ultra high flow valve lets water pressure hold up while it softens.

Reason to buy is NSF certification, salt saving regeneration and a high flow valve that protects water pressure, with installation parts in the box. The limitation is conflicting power information, since a control board warranty and an indicator light appear beside a no power spec.

Who it's for

Larger households that want strong flow and a low salt indicator get a certified, complete kit. Buyers who need exact power and dimension details should confirm them before ordering.

Pros and cons

Pros
  • NSF certified for scale reduction
  • AutoSense salt saving
  • High flow valve
  • Low salt indicator light
Cons
  • Power requirement listed inconsistently
  • Dimensions not listed
  • Warranty text cut off in listing

Performance notes

AutoSense regeneration responds to usage, so the resin is refreshed when needed rather than on a daily schedule, which trims salt use. A high flow valve limits pressure loss, so showers and taps run normally. A blinking indicator light signals when the salt supply is low.

Specifications

BrandNorth Star
ModelNSC31
Dimensions & fit
Item Dimensions L X W X H1"L x 1"W x 1"H
Capacity & performance
Capacity31300 gallons
Maximum Flow Rate20 gpm
Power & efficiency
Power SourceManual/No Power
Construction & materials
Material TypeFiberglass, Plastic, Stainless Steel
Compatibility & installation
Installation TypePlumbed
Included components
Included Componentssystem
Unit Count1 Count
Warranty & support
Supported Water TDS Level Maximum PPM8
Other details
Container TypeTank
Other Special Features Of The ProductNSF certified
Purification MethodIon Exchange

Frequently asked questions

Is the North Star NSC31 big enough for a family of five?

The description calls it ideal for families of 5 or more, and the title says it suits homes with 1 to 5 plus persons.

What comes with the North Star NSC31?

The single tank, a bypass valve, a drain hose, 3 clips, 2 hose clamps, an adapter elbow and a grommet.

What does NSF certified mean on the North Star NSC31?

The description says NSF is a public health organization that tests products against its standards, and the NSC31 is certified to reduce hard water scale.

Does the North Star NSC31 need electricity?

The spec sheet lists no power, but the description mentions an indicator light and a control board warranty, so confirm before buying.