Protect your entire home's plumbing, appliances, and water quality with the NU Aqua 4.5" x 20" Whole House Sediment Filter. Engineered with premium melt-blown polypropylene fiber, this 5-micron replacement filter delivers superior sediment removal with up to 20% longer service life than standard sediment filters.
Premium Melt-Blown Polypropylene Construction
Unlike cheaper spun or string-wound sediment filters, this NU Aqua filter is manufactured using advanced melt-blown polypropylene technology. This process creates a true depth filter with graduated density—tighter filtration at the core and more open structure at the surface. The result is exceptional dirt-holding capacity, longer filter life, and consistent performance throughout the filter's lifespan.
5 Micron Filtration for Whole Home Protection
The 5-micron rating provides the ideal balance between fine filtration and water flow for whole house applications. This filter effectively captures sand, silt, rust, scale, and other particulates that can damage water heaters, clog fixtures, stain laundry, and reduce the effectiveness of downstream filters. It's the essential first line of defense for any whole house water treatment system.
20% Longer Service Life
Thanks to the high-capacity melt-blown construction, this premium sediment filter holds significantly more dirt and sediment than standard filters. The graduated density design allows the filter to load evenly throughout its depth, extending service life by up to 20% compared to conventional sediment filters. This means fewer filter changes, lower maintenance costs, and better long-term value.
Key Features & Benefits
-
Premium Melt-Blown PP - Superior construction for maximum dirt-holding capacity
-
5 Micron Filtration - Captures fine sediment, rust, sand, and particulates
-
20% Longer Life - Extended service life reduces replacement frequency and costs
-
Standard 4.5" x 20" Size - Universal fit for big blue and standard 20" housings
-
Graduated Density - True depth filtration for even loading and consistent flow
-
Whole Home Protection - Filters water at point of entry for complete coverage
-
High Flow Rate - Maintains strong water pressure throughout your home
-
Chemical-Free - Pure polypropylene construction, no binders or adhesives
What It Removes
This 5-micron sediment filter effectively captures:
- Sand and silt (down to 5 microns)
- Rust and oxidized iron particles
- Scale and mineral deposits
- Sediment and dirt
- Pipe debris and particulates
- Turbidity and cloudiness
- Well water sediment
Protects Your Entire Home
-
Water Heaters - Prevents sediment buildup that reduces efficiency and shortens lifespan
-
Appliances - Protects dishwashers, washing machines, and ice makers from damage
-
Fixtures - Prevents clogging of faucet aerators, showerheads, and valves
-
Plumbing - Reduces sediment accumulation in pipes and water lines
-
Downstream Filters - Extends life of carbon filters, RO membranes, and other treatment stages
-
Laundry - Prevents rust stains and sediment on clothes
Universal Big Blue Compatibility
The standard 4.5" x 20" dimensions make this filter compatible with all major big blue filter housings, including NU Aqua whole house systems, Pentek, Culligan, iSpring, and other brands using standard 20-inch housings. It's designed as a direct replacement for existing sediment filters in whole house applications.
When to Replace Your Sediment Filter
Replace your sediment filter when you notice:
- Reduced water pressure or flow rate
- Visible discoloration or sediment in water
- Filter appears dark or heavily loaded (visible through clear housing)
- 3-6 months have passed since last replacement (depending on sediment levels)
- Pressure gauge shows significant pressure drop across filter
Technical Specifications
-
Filter Type: Sediment (Melt-Blown Polypropylene)
-
Dimensions: 4.5" diameter x 20" length
-
Micron Rating: 5 micron (nominal)
-
Construction: Premium melt-blown PP with graduated density
-
Service Life: 20% longer than standard sediment filters
-
Application: Whole house water filtration (point of entry)
-
Compatibility: Standard 20" big blue filter housings
-
Replacement Interval: 3-6 months (varies by water quality)
-
Weight: 1 lb
-
Country of Origin: Taiwan
-
SKU: WU-S20-5M
Why Choose NU Aqua Sediment Filters
NU Aqua sediment filters are engineered for superior performance and value. The premium melt-blown polypropylene construction delivers consistent filtration, high dirt-holding capacity, and extended service life that commodity filters can't match. When you choose genuine NU Aqua replacement filters, you're ensuring your whole house system operates at peak efficiency while protecting your investment in plumbing and appliances.
Perfect For
Ideal for municipal water with sediment issues, well water applications, homes with older plumbing that sheds rust and scale, pre-filtration for RO systems and water softeners, and as the first stage in any whole house water treatment system. Essential protection for homes with high sediment loads or variable water quality.
Installation Tip: Always install sediment filters as the first stage in your whole house system, before carbon filters or other treatment stages. This protects downstream filters and extends their service life. Shut off water supply before replacing filters.
Maintenance Recommendation: For optimal performance, replace sediment pre-filters every 3-6 months depending on your water quality. Homes with well water or high sediment loads may require more frequent changes. Monitor pressure drop across the filter to determine optimal replacement timing.
System Design Tip: For best results, use this 5-micron sediment filter as a pre-filter before carbon filters, water softeners, or RO systems. If you have very high sediment loads, consider adding a 20-micron sediment filter before this 5-micron stage for extended filter life.
