Water coming into your boat isn’t filtered to a consistent standard. Many filters are designed for 5 micron or higher, which leaves finer contaminants behind in your water.
The AR3 – Marine Grade™ (with 5" filters) is engineered to go further. It filters down to 0.2 micron while maintaining strong water flow using materials that are NSF-certified for drinking water safety.
Features & Benefits
- Marine grade 316 stainless steel components resist rust, corrosion and salt-air pitting
- Built using materials that are NSF-certified for drinking water safety
- Captures dirt, sand, and sediment early to help protect the system and extend filter life
- Filters down to 0.2 micron to capture bacteria, cysts, and fine particles
- Reduces chemicals that contribute to poor taste and odor
- High-flow design for consistent performance
- Electroplated aluminum frame and stainless-steel 316 components reduce reliance on plastic and improve durability
- Quick Connect ¾" GHT compatibility enables fast, tool-free set-up and seamless system integration
True Multi-Stage Filtration
The AR3 – Marine Grade is built around a structured three-stage filtration process where each stage is designed to do a specific job. Instead of relying on a single filter to handle everything, the system separates sediment removal, fine filtration, and chemical reduction into distinct steps.
Filtration begins with the Stage 1 Longevity filter using pleated polypropylene media at 5 microns to capture dirt, sand, and sediment before it reaches the next stage. This helps protect downstream filters and maintain overall system performance.
The system then moves into the Stage 2 0.2 Micron High Flow filter, which targets bacteria, cysts, and fine particles that standard filters are not designed to trap. Most filters stop at 5 microns, making this stage approximately 25x finer in filtration capability.
The final step is the Stage 3 Tasty filter, where granular activated carbon reduces chemicals that contribute to poor taste and odor. This progression from sediment to fine filtration to chemical reduction creates a more complete filtration pathway.
High Flow That Supports Real Use
Many multi-stage systems restrict flow as filtration increases. The AR3 – Marine Grade is engineered to maintain both. Delivering up to 5.5 gallons per minute at 60 PSI (when used with standard ¾" hoses), its high flow performance supports how water is actually used in a boat. Showers stay consistent. Sinks and fixtures perform as expected. Multiple water sources can run at the same time without the drop-off common in more restrictive filtration systems.
Built Better. You’ll Notice.
With its upgraded stainless steel 316 design for increased durability and proven corrosion resistance, the AR3 – Marine Grade is an evolution of our RV AR3, the gold standard in mobile water safety and an RVer favorite. It has an electroplated aluminum frame as well, that is lightweight, UV resistant, and built for long-term outdoor use.
Filter canisters and Quick Connects are constructed from stainless steel 316, replacing the plastic-heavy housings commonly used in other filtration systems. This reduces the potential for unwanted contaminants to leach into materials over time while improving overall system integrity. Most importantly, the materials used in these components are NSF-certified for drinking water safety.
Designed to integrate into Blu Technology’s Quick Connect ecosystem, the AR3 – Marine Grade reduces connection points
and simplifies set up while creating a complete water pathway from marina to boat.
Filter Life and Maintenance
Boat water filter performance depends on usage and source water conditions. Under typical conditions, filters are designed to last between three to four months or approximately 3,000 to 4,000 gallons.*
Maintaining proper replacement intervals helps ensure filtration performance and flow remain consistent over time.
What’s Included
- Stage 1 Longevity sediment filter (5 micron, 5-inch)
- Stage 2 High Flow filter (0.2 micron, 5-inch)
- Stage 3 Tasty granular activated carbon filter (5-inch)
- Electroplated aluminum frame
- Stainless steel 316 filter canisters
- ¾" GHT stainless steel 316 Quick Connect set
- Filter housing key
- Specially designed carrying and storage casre
- Depending on usage and source water conditions
*Depending on usage and source water conditions
