Report: Aquasure models we rankLast updated:

Aquasure Water Softeners

Aquasure is an Amazon-first water treatment brand with the broadest softener range in our research: two-tank Harmony systems, a compact Lite cabinet, fine-mesh resin for iron, a salt-free conditioner and an RO bundle. Below are the 5 Aquasure models in our rankings, best placed first; compare them with every other brand on the best water softener brand page.

As an Amazon Associate I earn from qualifying purchases.

Aquasure models we rank, best placed first

  1. 1
    Original illustration based on the Aquasure Harmony 48K's shape and colour — not a product photo

    Why it's here: #3 in hub, #2 in budget. A 48,000-grain two-tank softener with a digital metered head and a sediment/carbon pre-filter in the box, at the lowest price band among the 48K systems.

    Grain capacity48,000 grains
    Max flow rate12 gpm*
    Sized for4-5 bathrooms, up to 5-6 people
    Control valvedigital metered*

    * From the seller's Amazon listing; not yet confirmed by the manufacturer.

    Good

    • Pre-filter included, which most rivals sell separately
    • Metered digital head with an adjustable regeneration interval
    • In our two-adult home: under 80 lb of salt in six months

    Not so good

    • Uses its own control head rather than a widely stocked Fleck valve
    • No third-party certification named on the listing
    • Our calculated regeneration setting was too optimistic; we had to adjust it

    Skip it if: Anyone who wants a valve any local plumber already knows, or a certified system.

    Check price on Amazon ($600–$900)Full Aquasure Harmony 48K reviewSpec score 6.5/10 (provisional)
  2. 2

    Aquasure Harmony Lite 34K

    Best for condos · by Aquasure

    Original illustration based on the Aquasure Harmony Lite 34K's shape and colour — not a product photo

    Why it's here: #11 in hub, #3 in budget. An all-in-one 34,000-grain cabinet with a pleated pre-filter, aimed at condos, townhomes and mobile homes.

    Grain capacity34,000 grains
    Max flow rate3.13 gpm*
    Sized for1-3 bathrooms, up to 4 people

    * From the seller's Amazon listing; not yet confirmed by the manufacturer.

    Good

    • All-in-one cabinet with pre-filter
    • Low price band
    • No leaks and factory defaults worked on day one, in our install

    Not so good

    • Very low listed flow rate, which can drop pressure with two showers running
    • Small capacity
    • Back-only connections: our install needed 27.5 in of front-to-back clearance

    Skip it if: Any home that runs a shower and a washing machine at the same time.

    Check price on Amazon ($300–$600)Full Aquasure Harmony Lite 34K reviewSpec score 4.5/10 (provisional)
  3. 3

    Aquasure Harmony 50K Fine Mesh

    Best value for iron · by Aquasure

    Original illustration based on the Aquasure Harmony 50K Fine Mesh's shape and colour — not a product photo

    Why it's here: #3 in well. Aquasure's fine-mesh resin version of the Harmony, listed for iron, with a triple-purpose pre-filter.

    Grain capacity50,000 grains*
    Clear-water iron10 ppm*
    Sized for3-4 bathrooms*

    * From the seller's Amazon listing; not yet confirmed by the manufacturer.

    Good

    • Fine-mesh resin suited to iron
    • Pre-filter included
    • Mid price band

    Not so good

    • Own-brand control head
    • No certification named
    • Max TDS listed at 500 ppm

    Skip it if: Wells with ferric iron or iron bacteria.

    Check price on Amazon ($600–$900)Full Aquasure Harmony 50K Fine Mesh reviewSpec score 5.6/10 (provisional)
  4. 4

    Aquasure Serene Lite

    Best salt-free with UV included · by Aquasure

    Original illustration based on the Aquasure Serene Lite's shape and colour — not a product photo

    Why it's here: #4 in salt free, #3 in combo salt-free. A salt-free conditioner with a triple-purpose pre-treatment stage, listed for harder municipal water than the A. O. Smith.

    Max flow rate10 gpm*
    Max hardness25 gpg*
    Rated capacity650,000 gal
    Warranty5-year limited (activate online within 60 days)

    * From the seller's Amazon listing; not yet confirmed by the manufacturer.

    Good

    • Higher stated hardness limit than most salt-free units
    • Pre-treatment stage included
    • Low price band

    Not so good

    • Municipal water only
    • Few buyer reports
    • Pre-filter cartridges are an ongoing cost

    Skip it if: Well water.

    Check price on Amazon ($300–$600)Full Aquasure Serene Lite review
  5. 5

    Aquasure Softener + RO Bundle

    Best with drinking-water RO · by Aquasure

    Original illustration based on the Aquasure Softener + RO Bundle's shape and colour — not a product photo

    Why it's here: #4 in combo. A whole-house Aquasure softener, a sediment/carbon pre-filter and an under-sink reverse osmosis system in one bundle.

    Drinking-water RO4-stage 75 GPD under-sink RO*
    Grain capacityNot confirmed — the listing contradicts itself: 72,000 (title) vs 48,000 (bullet) - CONFLICT

    * From the seller's Amazon listing; not yet confirmed by the manufacturer.

    Good

    • Covers whole-house softening and drinking water
    • Pre-filter included
    • Plenty of buyer feedback

    Not so good

    • Grain capacity conflicts on the listing
    • RO adds filter changes and a drain connection
    • Top band for the bundle

    Skip it if: Anyone who only needs softening.

    Check price on Amazon ($900–$1,300)Full Aquasure Softener + RO Bundle review

Other places to start: the best water softener rankings, well water softeners and the comparison table.