Big Blue whole house water filters deliver high-flow sediment and particulate reduction for modern homes. The following selections represent top-rated 20″ and 10″ cartridges and full filtration systems designed to protect appliances, improve water clarity, and maintain strong water pressure. Each option is compatible with the Big Blue housing format and features durable construction, high dirt-holding capacity, and NSF/ANSI certification where noted. Read on to compare features and choose the best fit for your household needs.
| Product | Brand | Filter Type | Micron | Size |
|---|---|---|---|---|
| Pentair Pentek DGD-5005-20 (2-Pack) | Pentek | Dual-Gradient Density Sediment | 5 | 20″ x 4.5″ |
| Pentair Pentek DGD-5005-20 (1-Pack) | Pentek | Dual-Gradient Density Sediment | 5 | 20″ x 4.5″ |
| Aquaboon 5 Micron 20×4.5 | Aquaboon | Sediment | 5 | 20″ x 4.5″ |
| PUREPLUS 5 Micron 10″ x 4.5″ | PUREPLUS | Sediment | 5 | 10″ x 4.5″ |
| iSpring WGB32BM 3-Stage System | iSpring | 3-Stage Sediment/Carbon | 5 (sediment in stage 1) | 20″ x 4.5″ |
Pentek DGD-5005-20 Big Blue 2-Pack
The Pentair DGD-5005-20 Big Blue cartridge uses dual-gradient density spun polypropylene to achieve high-efficiency sediment removal. The 5-micron rating targets dirt, sand, silt, and particulates while preserving taste and odor. The 20″ length provides a large dirt-holding capacity, increasing time between changes. NSF/ANSI Standard 42 certified for water quality assurance, these cartridges are designed for high-flow pre-filtration in whole-house systems. Pack of two offers convenient replacement planning for households with demanding filtration needs.
Pentek DGD-5005-20 Big Blue 1-Pack
This 1-pack version delivers the same high-flow sediment reduction with a 5-micron rating and dual-gradient density design. It’s engineered to maximize dirt-holding capacity and minimize flow restriction, making it suitable for homes with powerful water demands. NSF-certified and manufactured with 100% polypropylene, it maintains water purity without imparting taste or odor. Ideal as a primary pre-filter in a Big Blue housing, especially when main-line sediment is a persistent concern.
Aquaboon 5 Micron 20×4.5 Whole House Filter (2-Pack)
Aquaboon’s 5-micron sediment cartridges provide robust protection for whole-house systems, capturing dirt, sand, and rust while maintaining steady water flow. The 20″ length ensures durable filtration and longer service life, reducing the frequency of changes. Manufactured with 100% pure polypropylene, these cartridges are designed to fit standard Big Blue housings and work well as a pre-filter in a multi-stage filtration setup. The 2-pack option is convenient for households needing regular replacements.
PUREPLUS 5 Micron 10″ x 4.5″ Filter (2-Pack)
PUREPLUS offers a compact 10″ x 4.5″ filtration option with a 5-micron rating for sediment removal. The multi-layer design includes an activated carbon layer to reduce chlorine taste and odor. This cartridge is suitable for smaller Big Blue housings or as a secondary filter in larger systems. It emphasizes BPA-free materials, European compliance, and a service life that aligns with typical household consumption, making it a practical choice for improving water clarity while protecting appliances.
Pentair DGD-5005 10-Inch Big Blue Cartridge (Pack of 2)
This 10-inch version provides a compact option for spaces with limited housing depth while still delivering the same high-efficiency sediment filtration. The 5-micron rated cartridge uses dual-gradient density to trap particulates and preserve water quality across the entire home. Pack of two ensures continued filtration compatibility in ongoing maintenance cycles, and it remains compatible with standard Big Blue housings in many residential systems.
Pentair RFC-20BB Big Blue Carbon Filter
This carbon-based option focuses on improving taste and odor by reducing chlorine and related compounds. The full 20″ x 4.5″ cartridge uses a radial flow path to minimize pressure drop while maximizing contaminant removal. With an approximate 100,000-gallon capacity, it is suitable for households seeking long-lasting carbon filtration within a Big Blue system and is designed to complement sediment cartridges in a multi-stage setup.
iSpring WGB32BM 3-Stage Whole House System
This multi-stage system provides sediment filtration, carbon media, and iron reduction through a dedicated stage. With a 20″ x 4.5″ cartridge footprint and in-line NPT connections, the WGB32BM maintains a balanced flow rate while delivering improved water aesthetics and reduced contaminants. The system targets iron and manganese removal along with sediment and chlorine reduction, offering a comprehensive whole-house filtration solution for homes facing challenging water quality scenarios.
Buying Guide: Key Purchase Considerations
- Filter Type and Micron Rating: Sediment cartridges use 5-micron ratings for dirt and rust removal. If taste or odor concerns accompany sediment, add a carbon-based filter stage or choose a combined sediment/carbon option.
- Housing Compatibility: Ensure the cartridge length and diameter align with your Big Blue housing (typically 20″ x 4.5″ or 10″ x 4.5″). Some options come in packs for easy maintenance or as compact 10″ variants for tight spaces.
- Flow Rate and Pressure Drop: High-flow designs with dual-gradient density help maintain water pressure during heavy use. Consider radial-flow carbon options to minimize pressure drop in carbon stages.
- well water vs. municipal water: Sediment and carbon filters perform well in municipal supply, but well-water scenarios may require additional iron and manganese treatment. Evaluate specific contaminant profiles before purchasing.
- Certifications and Materials: NSF/ANSI certifications provide assurances about filtration claims. Look for 100% polypropylene housings and BPA-free materials for safety and compatibility.
- Maintenance Schedule: Sediment filters typically need replacement every 3–6 months depending on water quality. Some models offer longer lifespans with higher dirt-holding capacity; factor in household water usage.
- Whole-House vs. Point-of-Use: For comprehensive protection, prioritize whole-house systems that cover all fixtures and appliances. Pair sediment cartridges with carbon stages for best taste and odor outcomes.
- Cost and Availability: While initial cartridge packs offer cost savings, ensure replacement parts remain readily available to prevent downtime in your system.
- Installation Considerations: DIY installation is feasible for many systems with standard plumbing fittings. Check manufacturer manuals and supported configurations before buying.