This page contains affiliate links. If you buy through them we may earn a commission at no extra cost to you. How we make money

Culligan Aquasential Smart High Efficiency Water Softener

Name: Culligan Aquasential Smart High Efficiency Water Softener
Brand: Culligan

Water softener · 9 GPM · Treats hardness, iron · Dealer quote only

The Culligan Aquasential Smart High Efficiency Water Softener is a dealer-installed ion-exchange softener built on Cullex resin in a Quadra-Hull tank, certified by WQA against NSF/ANSI 44 for hardness, barium and radium 226/228 plus NSF/ANSI 372 and CSA B483.1. The 9 in. model is rated 9.0 gpm; the 10, 12 and 14 in. models reach 9.4 to 10.6 gpm. It tolerates up to 75 gpg hardness and up to 5 ppm iron (with 8 gpg of hardness per ppm of iron), but the owner's guide says iron removal claims are not verified by WQA or IAPMO.

Capacity depends on salt dose: 19,003 grains at 4 lb, 25,823 at 8 lb and 29,622 at 12 lb for the 9 in. downflow model per the current owner's guide; the 9 in. upflow version is rated lower (25,116 grains at 8 lb). Features include Dial-a-Softness, proportional brining, Aqua-Sensor, leak sensor and the Culligan Connect app.

Culligan sells, installs and services it only through local dealers, so pricing is by dealer quote and we show published specs only. Warranty is lifetime on tank and resin, 10 years on circuit board and valve, 5 years on meter and probes, 1 year on the entire unit.

Sold through authorized dealers only; pricing is by in-home quote.

Culligan Aquasential Smart High Efficiency Water Softener well water water softener

Specifications

Verified 2026-10-06. Fields the manufacturer does not publish are marked “Not stated”.

Culligan Aquasential Smart High Efficiency Water Softener specifications
Model	9 in. model (1.0 cu ft Cullex resin, 9 x 48 in tank); also 10 in. (1.5 cu ft), 12 in. (2.0 cu ft) and 14 in. (3.0 cu ft) models, indoor and outdoor variants
Type	Water softener
Treats	Hardness, Iron; also barium, radium 226/228 (NSF/ANSI 44 certified reduction)
Service flow	9 GPMCurrent owner's guide (Cat. 01040719 Rev D, 07-2023) and its Performance Data Sheet, 9 in. and 9 in. Outdoor downflow: 'Service Flow Rate: 9.0 gpm', 'Pressure Drop at Max. Flow Rate: 11 psi'. Product page also lists 10.9 gpm @ 15 psi (peak) for the 9 in.; 10 in.: 9.4 gpm @ 12 psi; 12 in.: 10.0 gpm @ 11 psi; 14 in.: 10.6 gpm @ 11 psi.
Capacity	25,823 grainsRESOLVED from the current owner's guide (Cat. 01040719 Rev D, 07-2023, linked from the product page). 9 in. downflow model, exchange capacity per regeneration: 19,003 gr @ 4.0 lb salt, 25,823 gr @ 8.0 lb, 29,622 gr @ 12.0 lb; 'Efficiency Rated Dosage: 4,751 gr/lb' at 4 lb. The Performance Data Sheet for the '9 in. and 9 in. Outdoor Water Softener' repeats the same three figures. The 8 lb figure is recorded in grains. The lower table belongs to a different variant, the 9 in. Upflow model: 10,209 gr @ 2.0 lb, 16,666 gr @ 4.0 lb, 25,116 gr @ 8.0 lb. The figures previously recorded (17,854 / 27,108 / 31,736 and 9,792 / 17,366 / 27,306) come from the older 2020 'HE1' owner's guide and are superseded.
Media / technology	Cullex ion exchange resin, 1.0 cu ft, in Quadra-Hull tank with Cullsan underbedding
Connection	1 in. reinforced thermoplastic control valve
Installation	ProfessionalSold and installed only through Culligan dealers. 'can be installed anywhere you have access to main water piping, a drain and an electrical outlet' (24 V transformer).
Warranty	10-year manufacturer warrantyProduct page: lifetime on Quadra-Hull tank and Cullex resin; 10 years on circuit board and control valve; 5 years on Soft-Minder meter, Smart Brine probe, Salt Level Monitor and Aqua-Sensor probe; 1 year on entire conditioner.
Certifications	NSF/ANSI 44 (hardness, barium, radium 226/228; certified by WQA); NSF/ANSI/CAN 372 (lead content; certified by WQA); CSA B483.1 (certified by WQA)Product page: 'The Aquasential Smart High Efficiency 9 in., 9 in. Outdoor, 9 in. Upflow, 9 in. Upflow Outdoor, 10 in., ... 12 in., ... 14 in., and 14 in. Outdoor have been tested and certified by WQA against NSF/ANSI Standard 372, CSA B483.1, and NSF/ANSI Standard 44 for the effective reduction of hardness (calcium and magnesium), barium, and radium 226/228'. Owner's guide Rev D words it as 'NSF/ANSI/CAN Standard 372, CSA B483.1, and NSF/ANSI Standard 44'. Confirmed in the WQA product database (2026-10-06): Culligan International, 'Aquasential Smart High Efficiency', model '9 in.', listed under NSF/ANSI 44 with reduction claims 'Barium; Hardness; Radium 226/228', under NSF/ANSI/CAN 372 and under CSA B483.1. Performance Data Sheet: 'This system is certified for barium and radium 226/228 reduction based on hardness reduction.' Iron removal is not a certified claim. NSF certified-product database (info.nsf.org), searched 2026-10-06: no matching listing found for this model; the certification above is WQA's, not NSF's.
Dimensions	9 in. model: 56 in. overall height; 9 x 48 in media tank; 16 x 43 in (250 lb) or 18 x 43 in (375 lb) brine tank
Weight	Not stated
Price	Dealer quote only

Published features

Dial-a-Softness control
Proportional brining
Aqua-Sensor technology
Salt level monitor and leak sensor
Culligan Connect app with remote bypass
Maximum hardness 75 gpg (9 in.); maximum total iron 5 ppm with minimum 8 gpg hardness per 1 ppm iron
Operating pressure 20-125 psi

Pros and cons

Pros

WQA certified to NSF/ANSI 44 including barium and radium reduction
Lifetime tank and resin warranty through the dealer network
Published tolerance for up to 5 ppm clear-water iron (with resin cleaning), useful on mild iron wells

Cons

Dealer-only; no published price
Iron removal is not a certified claim and requires regular resin bed cleaning
Rated capacity depends on salt dose and regeneration mode: 19,003 to 29,622 grains for the 9 in. downflow model, and lower figures for the upflow version

Our take

This is the softener for a hard well with a little clear-water iron where you want an NSF/ANSI 44 certified unit, a lifetime tank and resin warranty and someone local to service it. You trade a published price for a dealer quote, and the iron tolerance is uncertified and needs regular resin cleaning. For iron above 5 ppm, add an Iron-Cleer ahead of it.

Not sure it is the right size for your flow and your water test? Work through the sizing guide, or compare every system we cover on the best well water filtration systems (2026) list.

Where to buy

Dealer quote only.