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Crystal Quest 120,000 Grain Commercial Softener

Ranked #1 of 30 in Best Water Softeners (2026). Here is every spec we scored, where it came from, and how it compares.

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CQ

#1 · Top pick

Crystal Quest 120,000 Grain Commercial Softener

Best for: 120,000-grain single-tank softener listed at 60 GPM, 4 cu. ft.

6.4/10

What we like

Top flow rate in this comparison (60 GPM)

Watch out for

Warranty not published by Crystal Quest

Score breakdown

Grain capacity 36%

Flow rate 28%

Warranty * 20%

NSF/ANSI 44 named 16%

* Not published by the manufacturer; scored at the lowest published value in this category, so an unpublished figure never outranks a published one.

Grain capacity	120000 gr
Flow rate	60 GPM
Warranty	Not listed
NSF/ANSI 44 named	No
Grain capacity (maker)	120,000 grains (official product name)
Flow rate (maker)	60 GPM (official product listing)
NSF/ANSI 44 (maker)	Not listed
Warranty (maker)	Not listed
Resin volume (maker)	Single 4 cu. ft.
Note	This is a commercial-capacity listing; the published 60 GPM figure is the maker's own flow rating.
Price	Check price

Check price at Amazon

Specs source:

Crystal Quest: 120,000 Grains

Crystal Quest 120,000 Grain Commercial Softener head-to-head

Head-to-headCrystal Quest 120,000 Grain Commercial Softener vs Crystal Quest 210,000 Grain Commercial Softener Head-to-headCrystal Quest 120,000 Grain Commercial Softener vs Aquasure Signature Elite 72,000 Grains with UV Featured inBest High-Capacity Water Softeners (2026)

How it compares

Open the full comparison table

Crystal Quest 210,000 Grain Commercial Softener

#2 · 210,000-grain single-tank softener listed at 60 GPM, 7 cu. ft.

Aquasure Signature Elite 72,000 Grains with UV

#3 · 72,000-grain Signature Elite softener with fine-mesh resin and 18 GPM UV

Aquasure Signature 64,000 Grains with 12 GPM UV

#4 · 64,000-grain Signature softener bundled with a 12 GPM UV system and a pre-filter

Crystal Quest 90,000 Grain Commercial Softener

#5 · 90,000-grain single-tank softener listed at 19 GPM, 3 cu. ft.

APEC Hydro Express 30

#6 · 30,000-grain softener with a 17.6 GPM peak flow and a 5-year limited warranty

Aquasure Signature 48,000 Grains with 12 GPM UV

#7 · 48,000-grain Signature softener bundled with a 12 GPM UV system and a pre-filter

Aquasure Signature 32,000 Grains with 8 GPM UV

#8 · 32,000-grain Signature softener bundled with an 8 GPM UV system and a pre-filter

Aquasure Harmony 72,000 Grains

#9 · 72,000-grain Harmony Series whole-house softener

Aquasure Harmony 72,000 Grains Fine Mesh

#10 · 72,000-grain Harmony softener with fine-mesh resin

Aquasure Harmony 72,000 Grains with Pre-Filter

#11 · 72,000-grain Harmony softener with a 10-inch triple-purpose pre-filter

Aquasure Harmony 64,000 Grains

#12 · 64,000-grain Harmony Series whole-house softener

Aquasure Harmony 64,000 Grains Fine Mesh

#13 · 64,000-grain Harmony softener with fine-mesh resin

Aquasure Harmony 64,000 Grains with Pre-Filter

#14 · 64,000-grain Harmony softener with a 10-inch triple-purpose pre-filter

Aquasure Signature Elite 64,000 Grains with UV

#15 · 64,000-grain Signature Elite softener with fine-mesh resin, KDF85 carbon and 18 GPM UV

SoftPro Elite Smart HE (City Water)

#16 · 64,000-grain Elite Smart HE softener for city water

APEC Hydro Express 45

#17 · 45,000-grain softener with a 17.6 GPM peak flow

Crystal Quest 60,000 Grain Commercial Softener

#18 · 60,000-grain single-tank softener listed at 12 GPM, 2.0 cu. ft.

Aquasure Harmony 50,000 Grains with Pre-Filter

#19 · 50,000-grain Harmony softener with a triple-purpose pre-filter

Aquasure Harmony 48,000 Grains

#20 · 48,000-grain Harmony Series whole-house softener

Aquasure Harmony 48,000 Grains Fine Mesh

#21 · 48,000-grain Harmony softener with fine-mesh resin

Aquasure Signature Elite 48,000 Grains with UV

#22 · 48,000-grain Signature Elite softener with fine-mesh resin, KDF85 carbon and 12 GPM UV

Crystal Quest 45,000 Grain Commercial Softener

#23 · 45,000-grain single-tank softener listed at 12 GPM, 1.5 cu. ft.

iSpring WCS45KG

#24 · 45,000-grain whole-house softener with a backwash feature

iSpring WCSTB45KG

#25 · 45,000-grain whole-house softener with automatic backwash

Aquasure Harmony Lite 34,000 Grains

#26 · 34,000-grain all-in-one cabinet Harmony Lite softener

Aquasure Harmony 32,000 Grains

#27 · 32,000-grain Harmony Series whole-house softener

Aquasure Harmony 32,000 Grains Fine Mesh

#28 · 32,000-grain Harmony softener with fine-mesh resin

Aquasure Harmony 32,000 Grains with Pre-Filter

#29 · 32,000-grain Harmony softener with a 10-inch triple-purpose pre-filter

Aquasure Harmony Lite 32,000 Grains

#30 · 32,000-grain all-in-one cabinet Harmony Lite softener