What it does for your water
The iSpring WCFM400K Air-Injection Iron Filter is an air-injection iron filter using Air Injection. Its listing gives a flow of 12 GPM.
An air pocket in the top of the tank does the oxidizing here: iron and sulfur drop out on the media and leave with each backwash, so there is nothing to refill.
Match its limits to a water test: iron, manganese, pH and sulfur. It belongs ahead of a softener so iron never reaches the resin.
The listing also gives features listed Air Injection and Advanced Catalytic Media; mounting Point-of-entry; media Air Injection; power Water Pressure Powered; capacity stated as 400000 gallons; model WCFM400K.
The listing gives dimensions of 16.4 in (L) x 14 in (W) x 66.8 in (H), a shipping weight of 104 lb and wcfm400k, drain tube, power supply, user manual in the box.
Warranty, per the listing: 1-year warranty.
Is it the right unit for your house?
Choose it when
- Well water with iron or sulfur
- Protecting a softener from iron
Pass on it when
- City water without iron
Where it wins and where it loses
Wins
- Air-injection iron filter
- Air Injection
- 12 GPM flow
Loses
- Check pH and iron limits
- Needs a drain for backwash
Limits to know about
- Figures are the maker's or seller's own; check fit and capacity against your water test and your equipment's manual.
Maker's figures
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | WCFM400K | Retailer |
|---|---|---|
| Features (seller) | Air Injection and Advanced Catalytic Media | Retailer |
| Dimensions (seller) | 16.4"L x 14"W x 66.8"H | Retailer |
| Material | Fiberglass, Manganese Dioxide, Plastic | Retailer |
| Mounting / installation | Point-of-entry | Retailer |
| Method | Oxidation Reduction Potential | Retailer |
| Service flow (maker) | 12 GPM | Retailer |
| Product weight | 104 lb | Retailer |
| Model name | WCFM400K | Retailer |
| Warranty | 1-year warranty | Retailer |
| Media | Air Injection | Retailer |
Units to weigh against it
Other iron and sulfur filters in the catalog
- AFWFilters AIG15V-25SXT-1 Air Injection Gold Fleck 2510SXT Air-Injection Iron Filter
- AFWFilters AIP20-25SXT-34 Fleck 2510SXT Air-Injection Iron Filter
- Pro Products KP02N Iron Filter
- Vistar Water Technologies KP65N Iron Filter
Every iron and sulfur filters on one grid · All iSpring units we cover
Final verdict
A sensible air-injection iron filter for well water with iron or sulfur.
Where to buy
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