Aqua-Pure AP800 Series Whole House Replacement Cartridge AP817 - Large

Our review of the Aqua-Pure AP800 Series replacement cartridge AP817 finds it best for homeowners who need reliable whole-house sediment and chlorine taste reduction without sacrificing water pressure. The single biggest reason to buy is its radial flow design that lets the manufacturer use finer activated carbon while maintaining flow, so sinks, showers and appliances benefit from cleaner drinking water and reduced chlorine odor across an entire 3 to 4 bathroom home.

Key Features

• CLEANER DRINKING WATER: Reduces chlorine taste and odor and captures sediment to improve water quality for drinking, cooking and bathing.
• RADIAL FLOW DESIGN: The cartridge uses radial flow to allow finer activated carbon while keeping system pressure stable during normal household use.
• WHOLE HOUSE FILTRATION: Designed for whole-house systems so treated water reaches appliances, sinks, bathrooms and laundry without point-of-use changes.
• LARGE CAPACITY: At a height of 9.75 in the cartridge offers extended service life suitable for larger homes before replacement is needed.
• GOOD FLOW RATE: Offers a flow rate of up to 10 gallons per minute to support simultaneous uses in multi-bathroom homes.
• HOUSING COMPATIBILITY: Fits AP801T and AP801B housings and most competitive 4.5 in diameter drop-in whole-house housings for straightforward replacement.

Who It's For

The AP817 is aimed at homeowners with three to four bathroom houses who want a swap-in replacement that treats water at every tap and appliance. It suits anyone who values reduced chlorine taste and lower sediment levels without a noticeable drop in water pressure when multiple fixtures run.

It is not ideal for very small apartments where a compact under-sink filter would be more cost effective, nor is it targeted at homes needing specialized removal of heavy metals or microbiological contaminants; those users should consider targeted filtration or treatment systems instead.

Pros & Cons

Pros

• Large capacity cartridge reduces frequency of change for 3-4 bathroom homes.
• Radial flow design allows finer activated carbon while maintaining pressure during normal use.
• Compatible with AP801T and AP801B housings and many 4.5 in diameter drop-in housings.
• Provides up to 10 gallons per minute flow to support multiple simultaneous fixtures.

Cons

• Designed specifically for sediment and chlorine taste/odor; not a replacement for systems that remove heavy metals or bacteria.
• Physical size (9.75 in) requires compatible housings and may not fit compact under-sink setups.

Specifications

Our Verdict

The Aqua-Pure AP817 is a practical, value-oriented replacement cartridge for whole-house filtration in medium to large homes. It delivers reduced chlorine taste and sediment control with a radial flow design that preserves pressure, making it a good buy for homeowners who want broad point-of-entry treatment without complex installation or specialty contaminant removal.

Frequently Asked Questions

Will this cartridge fit my existing AP801 housing?
Yes, the AP817 is designed for AP801T and AP801B housings and fits most competitive 4.5 in diameter drop-in housings.

What contaminants does it reduce?
The cartridge reduces chlorine taste and odor and sediment; it is not specified for heavy metals or microbiological removal.

How often should it be replaced?
Replacement frequency depends on water quality and usage, but the large capacity is intended to extend service life for a 3 to 4 bathroom home compared with smaller cartridges.