SDC-25-4075 Hydronix Comparable Tier1 Replacement Whole House Water Filter

Price $13.99
Availability: In Stock
Fits housings that accept 40 x 2.5 inch sized filters
  • Filters contaminants down to 75 microns in size
  • Made from polypropylene material, inhibits bacteria growth
  • Perfect for commercial applications
  • Ensures a greater dirt holding capacity versus string wound filters
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The SDC-25-4075 Hydronix Comparable Tier1 Whole House Sediment Water Filter is an easy to install replacement sediment water filter. This spun wound polypropylene filter is resistant to bacterial growth and an array of acidic and alkaline fluids, making it practical for both municipal treated water and situations with more questionable water. This 40 x 2.5 inch filter is recommended for commercial applications given its size and ability to remove contaminants down to 75 microns in size. Particles larger than this 75 micron size are effectively filtered out from the water and caught on the exterior of the filter. With time, this build up of contaminants may slow down the flow rate of the filter, this will usually occur around the 6 month mark which is why we recommend replacing your filter and O-ring together around this time. By replacing your O-ring you help prevent leaks and create a new tight seal between the housing and the sump head. Filter your water with Tier1 today and let us filter every drop.

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty 1
Used In Brands Hydronix, Tier1
Manufacturer's Id P75-40
UPC 799932625053
Advertised Size (in) 40 x 2-1/2
Actual Size (in) 40 inches (length) x 2-1/2 inches (outside diameter)
Actual Size (cm) 101.6 x 6.35
Media Spun Wound Polypropylene
Primary Filter Media Polypropylene
Filter Life (months) 6 months
Micron Rating (Nominal) 75
Operating Temperature (°F) 40 - 145
Operating Temperature (°C) 4.4 - 62.8
Flow Rate (gpm) 20
Flow Rate (lpm) 75.7082
Warranty Guarantee Unconditional Product Guarantee for Life of the Product
Primary Filter Media Polypropylene

Reduced Contaminants

The TIER1-P75-40 reduces the following contaminants:

  • Dirt
  • Particles
  • Sediment

The TIER1-P75-40 is comparable with the following part numbers



  1. Turn off water supply. Press red pressure-relief button (if present)
  2. Unscrew housing. Remove large o-ring, wipe clean and set aside
  3. Discard used filter cartridge
  4. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly
  5. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly
  6. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove
  7. NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove
  8. Insert new filter cartridge
  9. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge
  10. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation

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