9 Best Big Blue 20 Inch Filter Housings for 2026
You’re getting top performance with the SimPure DB20P, MewMore WHT20, and Pentair BBFS-22; these products are built for high flow up to 40 GPM and tough, long-lasting use.
These 20” Big Blue housings fit standard 20 x 4.5” cartridges, handle city or well water, and feature pressure-relief buttons for easy changes. With 1” NPT ports, durable polypropylene builds, and temperature resilience, they’re ready for heavy-duty setups. There’s more to match your system’s demands.
Quick Overview
- Top Big Blue 20″ housings like SimPure DB20P and MewMore WHT20 support 20 GPM with 1″ NPT ports for high-flow applications.
- Pentair BBFS-22 offers dual 1″ NPT housings; it delivers up to 40 GPM for high-capacity, two-stage filtration systems.
- Most 20″ Big Blue housings fit standard 20 x 4.5″ cartridges and feature reinforced polypropylene for durability and chemical resistance.
- Pressure-relief buttons on SimPure, MewMore, and Geekpure models enable safe, tool-free filter changes without leaks.
- Check temperature ratings and O-ring compatibility by ASIN to ensure seal integrity and long-term performance under varying water conditions.
| SimPure Whole House Water Filter Housing (DB20P) |  | Best Overall | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Built-in button | VIEW LATEST PRICE | Read Our Analysis |
| MewMore WHT20 Whole House Water Filter Housing |  | Best Value | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Pressure relief button | VIEW LATEST PRICE | Read Our Analysis |
| Pentair Pentek Big Blue Filter Housing |  | Professional Grade | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 3/4 inch | Pressure Relief: Pressure relief button | VIEW LATEST PRICE | Read Our Analysis |
| Geekpure 20″ Whole House Water Filter Housing |  | Budget-Friendly Pick | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Built-in valve | VIEW LATEST PRICE | Read Our Analysis |
| iSpring HB28B Whole House Water Filter Housing |  | Most Reliable | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Built-in button | VIEW LATEST PRICE | Read Our Analysis |
| Pentair OMNIFilter Whole Home Water Filtration System |  | Editor’s Choice | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1.5 inches | Pressure Relief: Pressure relief button | VIEW LATEST PRICE | Read Our Analysis |
| Pentair Pentek BBFS-22 Big Blue Filter System |  | Best Two-Stage Setup | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Pressure relief button | VIEW LATEST PRICE | Read Our Analysis |
| Pentair Pentek Big Blue Filter Housing |  | Heavy-Duty Pick | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 3/4 inch | Pressure Relief: Pressure relief button | VIEW LATEST PRICE | Read Our Analysis |
| Max Water 20×4.5 Whole House Filter Housing (Pack of 2) |  | Best Multi-Pack | Cartridge Size: 20 x 4.5 inches | NPT Port Size: 1 inch | Pressure Relief: Pressure-release button | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
SimPure Whole House Water Filter Housing (DB20P)
Need a durable, high-flow filter housing that handles both city and well water without breaking a sweat? The SimPure DB20P’s got you covered. Made from reinforced polypropylene with food-grade, chemical-resistant materials, it’s built to last. Its 1″ brass NPT threads seal tight; the upgraded body reduces leaks over time.
You’ll appreciate the red pressure-relief button when swapping filters. It fits any standard 4.5″ x 20″ cartridge and works with top brands. Rated for 20 GPM and up to 1000 PPM TDS, it handles tough water. Just plan space—it’s large. Mounting hardware and a wrench are included.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Built-in button
- Flow Rate (GPM):20 GPM
- Material:Reinforced polypropylene
- Included Hardware:Wrench, mounting bracket, screws
- Additional Feature:Upgraded thicker body design
- Additional Feature:Raised threaded holes prevent leaks
- Additional Feature:Supports TDS up to 1000 PPM
MewMore WHT20 Whole House Water Filter Housing
Looking for a durable, high-flow filter housing that handles both well and city water with ease? The MewMore WHT20’s got you covered. Made of reinforced polypropylene, it’s tough, corrosion-resistant, and handles up to 20 GPM. Its 1″ NPT ports and clear housing make installation and maintenance simple.
You’ll appreciate the pressure relief button when swapping 20×4.5” cartridges; any standard brand works. It’s lead-free, BPA-free, NSF-compatible, and safe for drinking water. Mount it under-sink or inline with other stages using the included steel bracket and wrench. Just search B0CJMMV553 for replacement O-rings.
Lightweight at 9.48 lbs, it’s built to last.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Pressure relief button
- Flow Rate (GPM):20 GPM
- Material:Reinforced polypropylene
- Included Hardware:Wrench, mounting bracket, screws
- Additional Feature:Clear housing for visibility
- Additional Feature:DIY parallel staging capability
- Additional Feature:Non-toxic, odorless construction
Pentair Pentek Big Blue Filter Housing
Who handles high-flow, heavy-sediment water systems with ease? You do when you install the Pentair Pentek 150467 Big Blue Filter Housing. This 20-inch beast tackles large-capacity jobs with a high-flow polypropylene cap and 3/4″ NPT ports. It fits all 20 x 4.5 heavy-duty cartridges, including Pentek’s Big Blue line.
The pressure relief button makes changes safer and faster. Durable and efficient, it reduces the number of housings needed in high-volume setups. Built for tough conditions, its black/blue design stands up to heavy sediment. With fewer vessels required, you save space and streamline maintenance. You’re covered for reliable, high-performance filtration.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:3/4 inch
- Pressure Relief:Pressure relief button
- Flow Rate (GPM):Not specified
- Material:High-flow polypropylene (HFPP)
- Included Hardware:Wall-mounting bracket, hardware
- Additional Feature:Extra-large capacity housing
- Additional Feature:Fewer vessels needed for high flow
- Additional Feature:3/4″ NPT for compact plumbing
Geekpure 20″ Whole House Water Filter Housing
Why settle for less when your whole house demands reliable, high-flow filtration? The Geekpure 20″ Whole House Water Filter Housing delivers 5–15 GPM; it is perfect for main supply installation. You’ll love the built-in pressure release valve: it makes filter changes safe and easy.
With 1″ NPT brass ports and a sturdy blue sump, it fits standard 4.5″ x 20″ cartridges but isn’t universal, so keep brand compatibility in mind. It shields appliances from sediment and chlorine, improving water quality everywhere.
Includes plastic wrench and metal bracket. Just remember: filters and O-rings (ASIN: B07D9HGCSB) sell separately. Backed by a 1-year warranty and 24/7 support.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Built-in valve
- Flow Rate (GPM):5–15 GPM
- Material:Polypropylene
- Included Hardware:Plastic wrench, metal bracket
- Additional Feature:Brand-specific lid compatibility
- Additional Feature:1-year limited warranty
- Additional Feature:24/7 technical support available
iSpring HB28B Whole House Water Filter Housing
Need whole-house protection that handles heavy sediment without slowing your water flow? The iSpring HB28B’s got you covered. Installed on your main line, it shields appliances like water heaters and washing machines using any standard 20 x 4.5 filter.
Its 1″ NPT ports connect easily to most plumbing, and the high-flow design keeps pressure steady. Made from reinforced polypropylene, it’s tough, chemical-resistant, and built to last.
When it’s time to change the filter, just press the built-in pressure release and use the included wrench to unscrew the housing. There is no mess and no hassle. Simple, durable, and efficient, it’s smart protection for your home’s water.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Built-in button
- Flow Rate (GPM):High-flow design
- Material:Reinforced polypropylene
- Included Hardware:Wrench, mounting bracket
- Additional Feature:High-flow with minimal pressure loss
- Additional Feature:Reinforced for chemical resistance
- Additional Feature:Simplified replacement process
Pentair OMNIFilter Whole Home Water Filtration System
Looking for a durable, space-saving whole home filtration solution that handles high-capacity water usage? The Pentair OMNIFilter WHH-20BB-SG-1’s got you covered. Built with tough polypropylene, it’s made for homes with four or more people and fits tight spaces: perfect for apartments, condos, or smaller homes.
You’ll love the pressure relief button that makes filter changes quick and mess-free. It connects to any 1.5” water line and lets you choose filters for sediment, iron, cysts, lead, or chlorine. At just 10.13 pounds and 24.6 inches tall, it’s compact but robust. Just remember: the filter’s sold separately.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1.5 inches
- Pressure Relief:Pressure relief button
- Flow Rate (GPM):Not specified
- Material:Durable polypropylene
- Included Hardware:Filter wrench, mounting bracket, hardware
- Additional Feature:Smaller footprint design
- Additional Feature:Ideal for apartments/condos
- Additional Feature:Customizable filter selection
Pentair Pentek BBFS-22 Big Blue Filter System
The Pentair Pentek BBFS-22 Big Blue Filter System is a go-to for homeowners and professionals who demand reliable, high-capacity filtration in a compact, pre-assembled setup. You’ll save time with its ready-to-install design and dual 1” NPT housings that handle any 20” x 4.5” cartridge.
It’s perfect for pairing sediment and carbon filters in a two-stage system. Built with durable, chemical-resistant polypropylene, it handles up to 40 GPM and temps to 100°F. The pressure relief button makes filter changes safer and easier.
At just over 24 pounds, it’s lightweight but robust. The included wall-mount hardware simplifies installation. You’re getting a trusted, long-standing performer that’s still a solid pick for 2026.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Pressure relief button
- Flow Rate (GPM):40 GPM
- Material:Durable polypropylene
- Included Hardware:Wall-mounting bracket, hardware
- Additional Feature:Pre-assembled dual housing
- Additional Feature:Two-stage filtration ready
- Additional Feature:40 GPM max flow rate
Pentair Pentek Big Blue Filter Housing
Who’s still wrestling with frequent filter changes in high-flow systems? You’re not alone. The Pentair Pentek Big Blue Filter Housing (150468) is your fix. With 3/4″ NPT ports and an optional 1-1/2″ for higher throughput, it handles heavy-duty flow with ease.
Its extra-large 20-inch sump fits 20 x 4.5 cartridges, cutting down the number of housings you need. Built with a high-flow polypropylene cap, it’s tough, chemically resistant, and NSF/ANSI 42 certified. Weighing just 6.98 lbs, it’s light but rugged.
Compatible with all Pentek 20 Big Blue filters, it’s a top pick for high-sediment applications.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:3/4 inch
- Pressure Relief:Pressure relief button
- Flow Rate (GPM):Not specified
- Material:High-flow polypropylene (HFPP)
- Included Hardware:Not specified
- Additional Feature:NSF/ANSI 42 certified
- Additional Feature:1-1/2″ port option available
- Additional Feature:Tested for structural integrity
Max Water 20×4.5 Whole House Filter Housing (Pack of 2)
Need heavy-duty performance and value in one package? Get the Max Water 20×4.5 Whole House Filter Housing (Pack of 2). You get two durable blue housings, brackets, and a wrench for quick setup.
With 1″ NPT brass ports and a pressure-release button, installation is easy and secure. Monitor pressure using the optional 1/8″ gauge port; drops signal when it’s time to replace the filter. Built from food-grade, BPA-free materials, it handles up to 90 PSI and 125°F.
It supports 40 GPM and works with sediment, carbon, or specialty filters. Trusted Max Water stands behind this reliable, high-flow solution.
- Cartridge Size:20 x 4.5 inches
- NPT Port Size:1 inch
- Pressure Relief:Pressure-release button
- Flow Rate (GPM):40 GPM
- Material:Food-grade, BPA-free plastic
- Included Hardware:Wrench, 2 brackets
- Additional Feature:Includes optional gauge port
- Additional Feature:Monitors pressure drop for maintenance
- Additional Feature:Supports TDS up to 2000 PPM
Factors to Consider When Choosing Big Blue 20 Inch Filter Housings
You’ll want to check the housing’s material durability so it holds up under pressure and harsh conditions. Make sure the port size and flow rate match your system’s needs to avoid bottlenecks.
Don’t overlook temperature tolerance and filter compatibility; they’ll determine whether your setup runs smoothly year-round.
Material Durability
Durability hinges on smart material choices when selecting a Big Blue 20-inch filter housing. You’ll want reinforced polypropylene; it’s tough and resists chemicals, so it lasts longer even in harsh conditions. If you’re dealing with high-flow systems, HFPP caps boost strength and compatibility; they keep the housing intact under pressure.
Look for brass 1 NPT threads; they seal better and cut down on leaks over time. The housing material itself matters: clear or blue versions let you check cartridge status without removing them, and they’re still rugged, non-toxic, and food-grade safe. Plus, heavy-duty models handle flow rates up to 20–40 GPM without cracking or warping.
You’re not just buying a shell; you’re investing in a system that stands up to daily stress. Pick a housing built with these durable materials, and you’ll save money and hassle in the long run.
Port Size
Strong materials keep your filter housing intact, but the right port size guarantees it performs under demand. Most 20″ Big Blue housings use 1″ NPT ports; you’ll find standard plumbing connections easy to install. If you’re working with limited space or lower volume, some models offer 3/4″ NPT ports, but you’ll need compatible fittings or adapters.
For higher capacity without changing footprint, a few housings provide 1.5″ internal ports, giving you room to scale. Port size directly affects flow capacity and pressure handling; therefore, larger NPT sizes are better if you expect heavy use.
Check that your housing supports 20″ x 4.5″ cartridges and confirm o-ring compatibility, often listed by ASIN, to ensure a tight seal. Matching port size to your system prevents leaks and keeps performance steady.
Flow Rate
How much water do you actually need to move through your system? Most 20″ Big Blue filter housings handle 20 to 40 GPM; however, your actual flow depends on setup and demand. If you need higher throughput, use multi-housing banks or taller configurations to keep pressure steady and filtration effective.
Your cartridge type matters: sediment filters often flow easier than dense carbon blocks, affecting overall capacity. Look for models with 1″ NPT ports since they support better flow and reduce bottlenecks. Also, match your housing to your feed pressure, which is typically 40–70 psi; otherwise, you’ll risk a steep pressure drop during peak use.
Choosing the right flow rate isn’t just about speed—it’s about balancing performance, efficiency, and consistent filtration under real-world conditions. Get it right, and your system runs smoothly without strain.
Temperature Tolerance
You’ve considered how fast water needs to move through your system, but don’t overlook how temperature impacts performance. Most 20″ Big Blue housings handle 40°F to 110°F; however, check specs: some cap materials limit heat resistance to 100°F, while others tolerate up to 125°F. Exceeding the max temperature can warp seals, degrade O-rings, or cause leaks.
Even within range, sustained heat stresses gaskets and may compromise cartridge fit over time. Pressure and chemical exposure interact with temperature; therefore, all three factors must align for safe operation. Never assume all housings are equal; brands vary widely. Always pull the datasheet for your model.
If your water regularly runs warm, confirm the housing’s upper limit matches your supply. Choosing wrong risks failure; picking right keeps your system tight, safe, and effective.
Filter Compatibility
What good is a filter housing if it doesn’t accept the cartridges you need? You’ll want one that fits standard 4.5″ diameter filters. Most 20″ housings do, including those for sediment and carbon. Stick to models with universal compatibility so you can swap brands without hassle.
But watch out; some, like Geekpure, use non-interchangeable lids. You’ve got to match sump and lid exactly. Check for 1″ NPT inlet and outlet ports to keep your plumbing simple and leak-free. You’ll also need the right O-ring, like B0CJMMV553, for a tight seal on DB20P cartridges.
If you’re running multiple stages, systems like the BBFS-22 support two 20″ filters and keep flow high. Single housings limit you to one cartridge, so plan your setup wisely.
Frequently Asked Questions
Can I Install a Big Blue Filter Myself?
Yes, you can install a Big Blue filter yourself. Just shut off the water, release pressure, unscrew the old housing, attach the new one, insert the filter, and tighten it securely.
It’s straightforward if you follow the steps carefully.
Are Replacement Filters Included With These Housings?
No, you won’t get replacement filters with the housings; they’re sold separately. You’ll need to buy compatible 20-inch filters on your own.
Always check specs to ensure they match your system and water needs.
Do These Housings Work With Well Water Systems?
Yes, you can use these housings with well water systems. They’re built tough to handle sediment and contaminants. You’ll find they work well when paired with the right filters for your water quality needs.
What Tools Are Needed for Filter Changes?
You’ll need a wrench, gloves, and a bucket. Turn off the water, loosen the housing with the wrench, remove the old filter, pop in the new one, tighten it up, and restart the system.
Easy.
Are These Housings Bpa-Free?
Yes, they’re BPA-free, so you won’t risk chemical contamination. You’ll install them safely knowing the materials are non-toxic.
Just swap filters with your wrench and gloves; no hassle, no exposure. It’s a clean, worry-free setup every time.
Conclusion
You’ve got plenty of solid options when it comes to 20 inch Big Blue filter housings. Whether you prioritize durability, ease of installation, or value packs, there’s a fit for your whole house needs.
Just match the housing to your water quality goals and system setup. With the right choice, you’ll enjoy cleaner, safer water all year round: simple as that.
