$299.95 — Delivered to Your Door
Required for optimal performance & warranty compliance
Filters must be replaced every 12 months to maintain system performance and water quality.
Designed for Neptune 20" systems with 5–1–1 micron filtration — maintaining chlorine reduction, sediment removal, and clean water across every tap.
• Delivered directly to your door
• Simple 5-minute DIY replacement
• Includes removal tool for easy filter changes
Filters must be replaced every 12 months to maintain proper filtration performance.
Failure to replace filters within this timeframe may:
• Reduce system performance
• Allow chlorine breakthrough
• Increase strain on internal components
Failure to replace filters within the recommended interval will void warranty coverage.
Your system provides simple indicators when filters are due for replacement.
Common signs include:
• Noticeable reduction in water pressure
• Increase in pressure shown on the system pressure gauge
• Return of chlorine taste or smell
A simple chlorine test kit can also be used to verify chlorine reduction performance.
If you notice any of these signs, your filters should be replaced as soon as possible.
Neptune uses a 5 – 1 – 1 micron filtration system designed for whole-home water flow.
Stage 1 – Sediment Filter (5 Micron)
Captures:
• Rust
• Sand
• Pipe debris
• Sediment particles
Benefits:
• Cleaner water flow
• Protected plumbing
• Reduced appliance wear
Stage 2 – Chlorine Reduction Filter (1 Micron)
Reduces chlorine and chemical taste.
Benefits:
• Better smelling water
• Improved taste
• Gentler showers
• Helps reduce dry skin and dry hair
• Helps reduce itchiness and irritation
• May assist with eczema, psoriasis and dandruff
• May help reduce hair thinning and hair loss
Stage 3 – Scale Reduction Filter (1 Micron)
Helps reduce mineral scale adhesion.
Benefits:
• Less buildup on taps and glass
• Easier cleaning
• Improved appliance lifespan
Optional specialty filtration stages (such as heavy metal reduction) can be added if required.
To maintain warranty coverage and system performance:
• Only Neptune-approved replacement filters may be used.
Use of third-party filters will void the warranty in full.
System components and filter specifications may be updated over time as part of ongoing product improvements.
All replacement filters supplied by Neptune remain fully compatible with your system.
