







Product description




1 Filter lifetime indicator
2 US-Patented faucet design
3 We know RO

1 Advanced UV protection
2 Boosted performance

Replacement Filters
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Customer Reviews
4.6 out of 5 stars 8
5.0 out of 5 stars 2
4.0 out of 5 stars 2
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Price
$36.24$36.24
$29.98$29.98
$91.70$91.70
$39.99$39.99
Filtration stage
First
Second
Third
Fourth
Filter Type
Polypropylene
Anti-Scale & Activated Carbon
RO Membrane
Alkaline
Filter Function
Removes Sediment & Particles
Eliminates Scale & Chlorine
Filters Down to 0.0001 Micron
Remineralization
Replacement Cycle
Up to 12 Months
Up to 12 Months
Up to 24 Months
Up to 12 Months
Dimension
3.5 x 3.5 x 12
3.5 x 3.5 x 12
3.5 x 3.5 x 12
3.5 x 3.5 x 12
SAVE BIG IN THE LONG TERM: With 20 years of industry experience, we know that maintenance can be a significant cost. Our replacement filters, including FP500, FC500SL, MRO5004F, and FG500AK, offer great value, are made with quality materials, and last longer.
MINERAL BOOST: The natural mineral AK stage adds essential minerals back to your water, delivering natural spring-tasting water with a balanced, healthy pH and multiple essential minerals.
EFFECTIVE FILTRATION: Independently tested by SGS for PFAS and TDS reduction. This tankless reverse osmosis water filter eliminates over 99% of 1,000+ harmful contaminants, including PFAS (PFOA and PFOS), TDS, vinyl chloride, chlorine, fluoride, lead, arsenic, asbestos, calcium, sodium, and more.
PATENTED DESIGN – The top-mounted fastener allows for easy countertop installation entirely from above, eliminating the hassle of tightening the nut from underneath the sink.
UV PROTECTION: The built-in UV light lasts up to 8,000 hours and includes filter lifespan monitoring to ensure regular maintenance for optimal performance.
SPACE-SAVING: This reverse osmosis system eliminates the need for a storage tank, freeing up valuable under-sink space.
BUILT-IN PUMP: Enhances RO membrane efficiency for faster water output and a better experience, especially in low water pressure environments.
QUIET OPERATION: Sleek, durable casing reduces noise while maintaining a clean, organized appearance.
HIGH FLOW: Provides up to 500 gallons of filtered water per day, over 5x faster than traditional RO systems—fills a cup in just 10 seconds.
FILTER LIFESPAN MONITOR: Quick twist-to-unlock design and automatic filter life reminders for easy maintenance and optimal performance.
13 reviews for iSpring RO5004F-AK UV Alkaline Reverse Osmosis Water Filter, SGS Tested PFAS and TDS Reduction, 500 GPD Tankless Remineralization RO System Under Sink, Filter Life Monitor, 2:1 Pure to Drain
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$419.99
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