• Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

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but we know there's nothing in your cart.

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  • Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

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Reverse Osmosis Filter Sets with Membranes

Maintain your entire reverse osmosis system with one convenient replacement kit. Most RO pre- and post-filters should be replaced every 6 months, while the RO membrane typically lasts up to 2 years under normal water conditions-making this complete set the easiest way to keep your system performing at its best.
Showing 1 -  15 of 15 Products
5-Stage Reverse Osmosis Replacement Filter Set with 50 GPD Membrane & 1/4" Threaded Inline Filter
$59.95 / Set
$74.94 Save 20%!
5-Stage Reverse Osmosis Replacement Filter Set with 50 GPD Membrane & 3/8" Quick Connect Inline Filter
$72.99 / Set
$91.24 Save 20%!
5-Stage Reverse Osmosis Replacement Filter Set with 50 GPD Membrane & 1/4" Quick Connect Inline Filter
$59.95 / Set
$74.94 Save 20%!
5-Stage Reverse Osmosis Replacement Filter Set with 100 GPD Membrane & 1/4" Threaded Inline Filter
$68.95 / Set
$86.19 Save 20%!
5-Stage Reverse Osmosis Replacement Filter Set with 100 GPD Membrane & 1/4" Quick Connect Inline Filter
$66.95 / Set
$83.69 Save 20%!
5-Stage Reverse Osmosis Replacement Filter Set with 100 GPD Membrane & 3/8" Quick Connect Inline Filter
$79.95 / Set
$99.94 Save 20%!
5-Stage Yearly Reverse Osmosis Replacement Filter Set with 50 GPD Membrane & 3/8" Quick Connect Inline Filter
$99.95 / Set
$124.94 Save 20%!
Microline Reverse Osmosis Filter Set, Pre & Post Filter + Membrane
$94.95 / Set
$118.69 Save 20%!
Filter Set With Membrane for Culligan Reverse Osmosis Systems
$62.04 / Set
$77.55 Save 20%!
Microline Reverse Osmosis Filter Set with Membrane for Model 435
$109.95 / Sets
$137.44 Save 20%!
Filter Set With Membrane for Culligan AC-30 Reverse Osmosis System
$70.71 / Set
$88.39 Save 20%!
Filter Set With Membrane for 4-Stage PuROTwist Reverse Osmosis Systems
$119.95 / Set
$149.94 Save 20%!
Filter Set With Membrane for 3-Stage PuROTwist Reverse Osmosis Systems
$109.95 / Set
$137.44 Save 20%!
Filter Set with Membrane for HydroGuard Twist RO Systems
$84.95 / Set
$106.19 Save 20%!
Filter Set with Membrane for HydroGuard Drop-In RO Systems
$64.95 / Set
$81.19 Save 20%!
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What Our Customers Have to Say

mary m. 20 days ago
5
You are the nly place I could find these filters at a good price and value. THANK YOU SO MUCH FOR A GREAT NEEDED PRODUCT.
David S. 26 days ago
5
I shopped around before buying a membrane and yours was the best buy. Fast shipping. Thank you. Dave
Don A. 64 days ago
5
Efficient service, prompt shipping, great quality product, reasonable price.
Joetta B. 79 days ago
5
They are doing the job!