Head-to-head · updated November 9, 2026
SpringWell WS1 vs SoftPro Iron Master
Short answer: if your iron is above 7 ppm, buy the SoftPro Iron Master: it states up to 30 ppm and costs $1,108 less. If sulfur is your main problem and you want a stated flow and media life, the SpringWell WS1 is the one with the figures (8 ppm hydrogen sulfide, 12 GPM, 10+ years).
SpringWell WS1 Well Water Filter System
8.6Very good · out of 10- Air injection oxidation (AIO) with a single air pocket refreshed at each backwash
- Up to 7 ppm iron, 8 ppm hydrogen sulfide and 1 ppm manganese, per SpringWell
- 12 GPM service flow, 10+ year media life, Bluetooth control head
Better on 0 of 4 comparable lines · $2,625 on November 9, 2026
SoftPro Iron Master AIO Iron Filter
8.8Very good · out of 10- Air injection oxidation with Katalox Light media
- Up to 30 ppm iron and 7 ppm manganese plus hydrogen sulfide, per SoftPro
- Filters sediment down to 3 microns and raises low pH
Better on 4 of 4 comparable lines · $1,517 on November 9, 2026
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Spec by spec
| Criterion | SpringWell WS1 | SoftPro Iron Master |
|---|---|---|
| Calculated score | 8.6/10 | 8.8/10 |
| Checked price | $2,625 | $1,517 |
| Flow rate | 12 GPM | Not stated |
| Media life | 10 years | Not stated |
| Yearly upkeep | $0 (no cartridges) | $0 (no cartridges) |
| Contaminants claimed | Iron, Manganese, Hydrogen sulfide | Iron, Manganese, Hydrogen sulfide, Sediment |
| Stated limits | iron 7 ppm, manganese 1 ppm, H2S 8 ppm | iron 30 ppm, manganese 7 ppm |
| Certification | None stated | Badge, standard not named |
| Drain and power | drain line + outlet needed | drain line + outlet needed |
| Connection | 1" | 1" |
| Warranty | 5 years | Lifetime |
| Return window | 180 days | 180 days |
★ marks the better figure on that line (4 lines can be compared). Specs as published by the brands; prices checked on November 9, 2026.
What the numbers mean
Both are air injection systems that backwash every night, need a drain and an outlet, and have no cartridges to replace. Both give 6 months to return them. That is where the similarities end.
SoftPro states much higher limits: 30 ppm of iron and 7 ppm of manganese, against 7 and 1 for SpringWell. It also covers the whole unit for life, where SpringWell lists 5 years on the electronic head. SpringWell, on the other hand, publishes what SoftPro leaves out: a 12 GPM service flow, a media life, a pH and pressure range, and a hydrogen sulfide figure.
Our formula leaves out the criteria SoftPro does not publish, which is why the Iron Master is not penalized for them. If you need those numbers before you buy, ask SoftPro with your water test in hand.
Our pick for each kind of buyer
SoftPro Iron Master
The SoftPro Iron Master costs $1,108 less than the SpringWell WS1 up front, at prices checked on November 9, 2026.
Read the review →SoftPro Iron Master
The SoftPro Iron Master scores 8.8/10 against 8.6/10 with our published formula.
Read the review →SoftPro Iron Master
SoftPro claims 4 contaminant groups for the SoftPro Iron Master (iron, manganese, hydrogen sulfide and sediment), against 3 for the SpringWell WS1.
Read the review →SoftPro Iron Master
SoftPro states up to 30 ppm of iron for the SoftPro Iron Master; SpringWell states 7 ppm for the SpringWell WS1.
Read the review →SoftPro Iron Master
Warranty on the SoftPro Iron Master: lifetime; on the SpringWell WS1: 5 years (head or valve, where there is one).
Read the review →Questions
Which is better, the SpringWell WS1 or the SoftPro Iron Master?
With our published formula, the SoftPro Iron Master scores higher (8.8 vs 8.6/10). The right pick still depends on your water and your house: see the picks by profile on this page.
What is the price difference between the SpringWell WS1 and the SoftPro Iron Master?
On November 9, 2026, the SpringWell WS1 was $2,625 at SpringWell (core size (ws1), 1-4 bathrooms) and the SoftPro Iron Master $1,517 at SoftPro (1.0 cubic foot (needs a well pump delivering at least 5 gpm)). Installation is extra in both cases unless you do it yourself.
Which is better for sulfur smell, SpringWell or SoftPro?
SpringWell states up to 8 ppm of hydrogen sulfide for the WS1. SoftPro names hydrogen sulfide for the Iron Master without a figure. For a strong sulfur smell, the WS1 has the clearer claim.