• No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.

  • 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.

Menu

  • No minimums, no surprises — we ship every order for free! We’ll get your filters out the door fast so you can enjoy clean air and water without paying extra.

  • 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.

Menu

Reverse Osmosis Water Filter Systems


What Our Customers Have to Say

Jeff H. 293 days ago
5
An affordable and easy way to replace my 23 year old Reverse Osmosis system! Easy to install and working great!
JAMES B. 625 days ago
5
Fantastic! The HydroGuard unit replaced a way overpriced 1-gallon unit that cost 7x as much! It had a bunch of electronics that measured insignificant ppm stuff. Plus the 5-filters in the old unit cost 3x as much as the 4 used in HydroGuard unit! Plus the new one supplies much more water and much faster! The 4.5 gallon tank is installed below the kitchen floor because of our limited cabinet space.
Gary R. 1494 days ago
5
I've used various RO systems over nearly 4 decades and the Hydronix HDGT-45 is clearly superior in every metric. Features such as the leak detection and water supply shutoff and the twist off filters make maintenance super simple and are typical examples of the thought that went into the unit's design. I've used Discount Filters products for 10 years and I have never been disappointed in the quality, value, service or support. Discount Filters just does it right.
James B. 1649 days ago
5
Fast delivery and easy install. It only took about half hour to get it installed under my kitchen sink