US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter (10 GPM) review

By Daryna Klochko · Published · Specs checked Oct 14, 2026 ·
US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter (10 GPM)
US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter (10 GPM)
9OF 10
Excellent
Listing 1.5 · Specs 2 · Cost/yr 2 · Warranty & returns 1.75 · Owner reviews 1.75 · How we score
Verdict

Scores 9/10, 2nd of the 4 iron filters we track. At $2,695 it costs more than the category median of $2,645. No certifier listing was found for it. It has no cartridges to replace.

Skip if

You might send it back: returns carry a restocking fee of up to 40%, while 1 of the 4 iron filters charges none

Price
$2,695
Certified for
None found
Flow
10 gpm (brand)
Cartridge life
Not stated
Cost per year
$0
Warranty
10 years

Certification

No listing found

No certifier listing found.

The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 14, 2026. What a listing means and what it doesn't

Specs and sources

Checked Oct 14, 2026 · source under each value
Filtration
Certification No listing found (checked Oct 14, 2026) US Water Systems data sheet
Flow rate, brand figure 10 gpm peak; the well must supply 5 gpm for the backwash (brand figures) US Water Systems data sheet
Cartridges and install
Cartridge life Brand limits: iron up to 8 ppm, hydrogen sulfide up to 6 ppm, manganese up to 0.5 ppm, pH 6–9; not for iron or sulfur bacteria US Water Systems data sheet
Cartridge price No cartridges or chemicals; media replacement interval not published US Water Systems data sheet
Cost per year No cartridges to replace US Water Systems data sheet
Install On the main line; needs a drain and a power outlet for the backwashing valve US Water Systems data sheet
Buying
Price $2,695 (sale price for the 10 gpm size (1–2 bathrooms); regular $4,491.67) (checked Oct 14, 2026) uswatersystems.com
Warranty 10 years on the tank, 7 years on the valve and electronics US Water Systems data sheet
Returns 60 days, new and unopened, less shipping (restocking fee up to 40%); 1-year money-back if their specialists sized the system US Water Systems data sheet
Brand page

Warranty, returns and shipping

Warranty 10 years

10 years on the tank, 7 years on the valve and electronics.

Returns 60 days · up to 40% restocking

60 days, new and unopened, less shipping (restocking fee up to 40%); 1-year money-back if their specialists sized the system.

Shipping Not stated

Warranty: 10 years on the tank, 7 years on the valve and electronics. Returns: 60 days, new and unopened, less shipping (restocking fee up to 40%); 1-year money-back if their specialists sized the system. Shipping: not stated by the brand. Source: US Water Systems data sheet, checked Oct 14, 2026.

Source: US Water Systems data sheet, checked Oct 14, 2026.

Compared with similar iron filters

Certified for: — · Warranty: Lifetime (limited)Score 9.25/10
Certified for: — · Warranty: 5 yearsScore 8.5/10
US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter (10 GPM)THIS MODEL
Certified for: — · Warranty: 10 yearsScore 9/10
Certified for: — · Warranty: LifetimeScore 8.75/10
$3,294.95 Check price →
Similar models compared: price, certified for, cost per year, warranty, score.
ModelPriceCertified forCost per yearWarrantyScoreWhere to buy
SoftPro AIO Iron Master Air Injection Iron Filter (1.0 cu ft) $1,517—$0Lifetime (limited) 9.25/10 Check price →
US Water Systems Flexx InFusion Iron and Sulfur System (10 GPM) $2,595——5 years 8.5/10 Check price →
US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter (10 GPM)THIS MODEL $2,695—$010 years 9/10 Check price →
US Water Systems Matrixx InFusion Iron and Sulfur System (10 GPM) $3,294.95——Lifetime 8.75/10 Check price →
Daryna Klochko

Affiliate links

$2,695
Checked Oct 14, 2026
Check price at US Water Systems
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