WH6 Whole House KDF-85
Iron / Hydrogen Sulfide Reduction Filter

economical removal of low to moderate levels of iron and hydrogen sulfide (rotten egg odor) over a wide pH range (6.5 to 8.5)

ClearPlus WH6 Whole House KDF-85
Iron / Hydrogen Sulfide Filter

MSRP: US$415.94
Our Price: US$319.95
You save: $95.99



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The WH6 iron / hydrogen sulfide reduction filter contains a combination of KDF85 media and coconut shell activated carbon. The KDF-85 effectively reduces dissolved iron and hydrogen sulfide odor over a wider pH range than possible with standard oxidation filters such as manganese greensand, thereby protecting your plumbing system including toilets, bath tubs and showers, and appliances such as clothes washers and dishwashers, from unsightly staining and odor. The activated carbon removes organic contaminants to substantially improve water clarity, taste, and odor. It does NOT add any harmful chemicals to the water, making it completely safe for drinking water applications.

  • fraction of the cost of competitive iron removal systems
  • easy to replace cartridge - no media regeneration necessary and no backwash required!
  • effective over a wide pH range of 6.5 to 8.5
  • also removes hydrogen sulfide (rotten egg smell) and manganese (under most conditions)
  • does not add harmful bi-products to your drinking water
  • prevents staining of laundry and plumbing system including your shower and tub
  • relatively long filter life - cost effective long-term operation
  • simple installation
  • small size (only about 8 inches by 24 inches!) - save valuable floor space!
  • chemical free - will not harm your septic system
  • filter features built-in granular activated carbon post-filter for the removal of a wide range of organic contaminants and better tasting water.
  • filter media inhibits bacteria growth (bacteriostatic)

How it Works:

KDF85 media acts as a catalyst to change soluble iron (ferrous) cations into insoluble ferric hydroxide which becomes trapped in the filter. The hydrogen sulfide is converted into an insoluble sulfide precipitate which is then similarly trapped and filtered. Ferric iron is removed by mechanical filtration.

Included in Package:

  • one (1) heavy-duty Pentek Big Blue 20" filter housing (1" NPT) w/ pressure relief buttons
  • one (1) powder-coated mounting bracket and related screws
  • one (1) KDF85/GAC Iron & H2S Reduction Filter (4.5 x20)
  • one (1) spanner wrench
choose iron filter

Applications & Suitability:

This system should be employed where low to moderate ferrous (dissolved) iron or hydrogen sulfide contamination is known or expected (hydrogen sulfide produces a distinct rotten egg / sulfur odor). This filter is most effective where iron and hydrogen sulfide levels are less than 3 ppm. Best contaminant removal rates are achieved where the pH is between 6.5 and 8.5 and where the water contains some dissolved oxygen. This filter will also remove ferric iron through mechanical filtration, although a sediment filter may be a more cost effective choice. If your pH level is 7.0 or higher, you should consider our WH5 Series iron / hydrogen sulfide reduction filters which use a different filter media (the replacement cartridges are significantly cheaper).

The life of the filter cartridge depends on the contamination level (iron, manganese and hydrogen sulfide levels) and amount of water consumed on a daily basis. The expected filter life for a typical residential application is about 20,000 gallons (75,500 L). For best results and longest filter life, a sediment pre-filter is recommended.

Not recommended where pH level is less than 6.5 without prior pH correction.

Suitable reduction of low levels of manganese can often be achieved where the pH level is greater than 8.0 and less than 8.5, and where the manganese level is a minimum of 5x higher than the iron level. For most manganese removal applications, we recommend our Iron Rival Series of Backwashable Iron Filters with Filox media.

This filter should be installed on the main cold water line after the pressure tank or water meter.

Which contaminant are you dealing with?
Problem Likely Cause
rusty red or brown staining of fixtures or laundry and/or your water has a metallic taste excess iron
black staining of fixtures or laundry excess manganese
rotten egg smell from water Hydrogen sulfide (H2S)

WH6 Iron / Hydrogen
Sulfide Reduction Filter Owner's Manual and Installation Guide
Specifications & Operating Conditions:
Recommended Flow Rate: up to 3 Gallons Per Minute (11 LPM)
Maximum Flow Rate: 4 Gallons Per Minute (15 LPM)
Recommended Operating Temp. Range: 40-100F (4.4 to 37C)
Max. Recommended Pressure: 90 psi (6.2 bar)
Recommended pH level: 6.5 to 8.5 for iron and hydrogen sulfide reduction,
8.0 to 8.5 for manganese reduction
Not recommended where pH level is less than 6.5 without prior pH correction.
Recommended Dissolved Oxygen: Iron level in ppm x 0.6
Maximum Recommended "Iron Equivalent": 3 ppm (mg/l)

Options, Accessories and Replacement Parts

Big Blue Housing O-Ring
#151122

MSRP: US$7.61
Our Price: US$4.99
You save: $2.62


- More Info -

Pentek SW-4 Spanner Wrench
#144368

MSRP: US$4.78
Our Price: US$3.49
You save: $1.29


- More Info -

Please Note:
The contaminants or other substances removed by this water treatment device are not necessarily present in your water.