| Aquasure AS-HS32D Harmony Series 32,000 Grains | $523 | 7.99 × 7.99 in (203 × 203 mm) of floor, 52 in (1,321 mm) tall — about 52 in — in two tanks, 67.0 lb (30,391 g). NO PRE-FILTER on this model, where the maker’s own 48,000 and 50,000 grain units include one. No certification is published. The warranty is 5 years EXTENDED, conditional on activating online within 60 days, with 30 days of money-back and lifetime US technical support. | An automatic digital metered head with a programmable backlit display, auto-flushing at intervals set by the incoming water quality and the usage. | 32,000 grains, sized for 1–2 bathrooms — $16.35 per 1,000 grains, the most expensive of the four Aquasure softeners here. |
|---|
| EcoPure EPS120 | $589 | 20.6 × 17.2 in (524 × 438 mm) of floor, 42.8 in (1,086 mm) tall, described as compact for basements, garages and utility rooms. NO WEIGHT and no certification are published. Warranty 1 year full, 3 years on the electronics, 10 years on the tank. | AutoSense AI demand control, regenerating only when needed. | NO GRAIN RATING IS PUBLISHED, and the maker states that this is DELIBERATE. What it offers instead is a comparison — it uses less salt than demand-based 40,000 grain systems — sized for 3–4 people and 2–3 bathrooms. Every other softener on this shelf gives a grain figure. $589. |
|---|
| Aquasure AS-HS48D Harmony Series 48,000 Grains | $630 | 10 × 10 in (254 × 254 mm) of floor, 62 in (1,575 mm) tall — about 62 in, the tallest on this shelf — in two tanks plus the pre-filter housing, 120.0 lb (54,431 g). The pre-filter is triple purpose, sediment, carbon and zinc, claimed to remove 99% of chlorine, VOCs, pesticides, odors, taste, soil, silt, sand, rust, heavy metals and sediment. No certification is published. Warranty 5 years extended on online activation within 60 days, 30 days money-back, lifetime US technical support. | An automatic digital metered head with a programmable backlit display. | 48,000 grains, sized for 3–4 bathrooms — $13.12 per 1,000 grains. |
|---|
| Aquasure AS-HS50SCZ Harmony Series 50,000 Grains | $680 | 11 × 11 in (279 × 279 mm) of floor, 48 in (1,219 mm) tall — the shortest Aquasure tank on this shelf — in two tanks plus the pre-filter housing. The pre-filter is triple purpose, sediment, GAC and zinc, claimed to remove 99% of chlorine, VOCs, PFAs, odors, taste, soil, silt, sand, rust and sediment. NO WEIGHT and no certification are published. Warranty 5 years extended on online activation within 60 days, 30 days money-back, lifetime US technical support. | An automatic digital metered valve, backwashing only when needed, stated to save hundreds of gallons through precise backwashing. | 50,000 grains, sized for 3–4 bathrooms and up to 5 people — $13.60 per 1,000 grains. |
|---|
| GE GXSH35W Smart Water Softener | $699 | 26 × 15 in (660 × 381 mm) of floor, 46 in (1,168 mm) tall, as a cabinet, 118.0 lb (53,524 g). Neither a warranty nor a certification is published. | Metered, with built-in WiFi through the SmartHQ app: instant alerts on low, medium or high continuous flow, low salt reminders and a vacation mode. | 35,000 grains, sized for up to 6 people — $19.97 per 1,000 grains, the second highest on this shelf after the Kenmore. |
|---|
| Aquasana WH-SF40-BASE SimplySoft 40K Grain | $749 | 30 × 16 in (762 × 406 mm) of floor, 43 in (1,092 mm) tall — about 43 in — as a base tank and cabinet system. NO WEIGHT is published. Warranty 5/10-year limited, with telephone customer service and installation support. | Metered, on an LCD display. | 40,000 grains, sized for up to 5 people and 4 bathrooms — $18.73 per 1,000 grains. IAPMO CERTIFIED to NSF/ANSI Standard 44 and to CSA B483.1, which only the two Aquasana units here are. |
|---|
| Aquasure AS-HS Harmony Series 64,000 Grains | $750 | 15 × 15 in (381 × 381 mm) of floor — 15 in square — 60 in (1,524 mm) tall, about 60 in, in two tanks, 149.0 lb (67,585 g): the heaviest of the four Aquasures here, and second on this shelf only to the 222 lb (100.7 kg) PRO+AQUA. NO PRE-FILTER, where the maker’s 48,000 and 50,000 grain units include one. No certification is published. Warranty 5 years extended on online activation within 60 days, 30 days money-back, lifetime US technical support. | An automatic digital metered head with a programmable backlit display. | 64,000 grains, sized for 4 or more bathrooms — $11.72 per 1,000 grains, the lowest on this shelf. Against the maker’s own 32,000 model that is +32,000 grains for $226.70. |
|---|
| AFWFilters 5600sxt 48K Grain | $805 | 10 × 10 in (254 × 254 mm) of floor, 54 in (1,372 mm) tall, in two tanks — a 10 × 54 in mineral tank and a 14 × 36 in brine tank — 120.0 lb (54,431 g). USA-assembled, by a company citing over 35 years in water treatment. NEITHER A WARRANTY, NOR A CERTIFICATION, NOR A FLOW RATE is published. | A Fleck 5600SXT valve — the only named industry valve on this shelf, and the only one a plumber could source parts for. | 48,000 grains — $16.77 per 1,000 grains. |
|---|
| Kenmore 420 (625.3842) | $820 | 21.5 × 15 in (546 × 381 mm) of floor, 48 in (1,219 mm) tall, described as compact and space-saving, 102.0 lb (46,266 g). No certification is published. Warranty 1 year full, 3 years on the electronics, 10 years on the tank, with up to 5 years of full coverage available. | IntelliSoft, stated to use artificial intelligence to learn water use patterns, with a display giving flow rate, salt levels and daily usage in real time. For well water there is a sediment pre-filter and enhanced iron reduction. | 40,000 grains, sized for 1–5 people — $20.51 per 1,000 grains on October 29, 2026, the highest on this shelf. It is the only softener here that publishes its LIMITS: up to 120 gpg of hardness and up to 10 ppm of clear water iron. |
|---|
| Aquasana WH-SF60-BASE SimplySoft 60K Grain | $1049 | 30 × 16 in (762 × 406 mm) of floor, 43 in (1,092 mm) tall — IDENTICAL to the maker’s 40,000-grain model — as a base tank and cabinet system. No weight is published. Warranty 5/10-year limited. | Metered. | 60,000 grains, sized for 5 or more people and 4 or more bathrooms — $17.48 per 1,000 grains. Against the maker’s own 40,000-grain model that is +20,000 grains for $300, IN THE SAME FOOTPRINT. IAPMO certified to NSF/ANSI Standard 44 and to CSA B483.1. |
|---|
| Aquasure AS-WHF72D Whole House Bundle | $1080 | 10 × 10 in (254 × 254 mm) of floor, 56 in (1,422 mm) tall. The bundle is a Harmony Series softener, a sediment, GAC and zinc triple pre-filter, and a 75 GPD four-stage reverse osmosis system whose filters are to be replaced every 6 to 12 months. No certification is published. Warranty 5 years extended on online activation within 60 days, with lifetime US technical support. | An automatic digital metered head, with automatic regeneration and backwash. | THE LISTING CONTRADICTS ITSELF: the title and the description say 72,000 grains, and the first bullet says 48,000. On the title figure that is $15.00 per 1,000 grains. Sized for 1–6 bathrooms and up to 8 people, on city, municipal or well water. |
|---|
| PRO+AQUA PRO-E-S80E Elite | $1156 | 17 × 17 in (432 × 432 mm) of floor, 36 in (914 mm) tall — the shortest system on this shelf — 222.0 lb (100,697 g), the heaviest here by 72.8 lb (33 kg). It carries the three-stage PRO-100-E whole house filter, treating hardness, chlorine, iron, VOCs, rust and sediment, with easy-access filter housings. Assembled in California. No certification is published. Warranty 5 years on the softener, with lifetime technical support. | A digital metered valve, stated efficient in salt and water usage. | 80,000 grains — the largest on this shelf — at $14.46 per 1,000 grains, sized for 6 or more bathrooms on well or municipal water. |
|---|
