The last filter you'll ever buy
Whole-house water filtersThat just work.
Filter every tap. City or well. 5,000+ homes filtered. 300+ contaminants filtered. Made in USA. 10-year warranty.
As featured on
Proof, on camera
Featured in national media. Trusted in real homes.
Modern Living with Kathie Ireland
AquaOx featured on the nationally syndicated show.
Customer stories
A homeowner shares their AquaOx experience
Real water, real difference
Is your tap water…
- Tastes or smells off
- Funky color or rust
- Leaves residue or scale
- Worried about contaminants
Every AquaOx system fixes that. Not sure what's in your water? Test it →
Shop the systems
Pick by home size, or take the 2-minute quiz if you're not sure.
The AquaOx
Our flagship, best for most homes (4 baths)
- 15 gpm flow
- 2M+ gallon life
- 6 filtration media
or $167/mo with Affirm
Shop The AquaOx →
The AquaOx XL
Big homes, 5+ bathrooms
- 37 gpm flow
- 3M+ gallon life
- 6 filtration media
or $208/mo with Affirm
Shop The AquaOx XL →Not sure? Take the 2-minute quiz →
Education
What is a whole house water filter?
A whole house water filter is a filtration system installed at your home's main water line that treats every drop of water entering your home, including kitchen taps, showers, laundry, refrigerator, dishwasher, and outdoor spigots. Unlike under-sink or pitcher filters that only treat water at one point, a whole house system protects every fixture and appliance simultaneously.
AquaOx whole house water filters filter more than 300 known contaminants, including chlorine, chloramines, lead, mercury, arsenic, hydrogen sulfide ("rotten egg" smell), iron, sediment, herbicides, pesticides, industrial solvents, and volatile organic compounds (VOCs). The system works on both city and well water.
How does a whole house water filter work?
Water entering your home passes through a multi-stage filtration tank. Each AquaOx tank contains six premium filtration media in a specific order: pre-sediment, KDF 85, Garnet, Centaur Catalytic Adsorptive Carbon, Activated Coconut Shell Carbon, and Filter-AG. Each stage targets a different category of contaminant. The system automatically backwashes every three days to refresh the media, so there's no manual maintenance.
How long do whole house water filters last?
AquaOx filter media is rated for 10+ years. Many AquaOx systems installed 15+ years ago are still running strong today. Self-backwashing keeps the media performing without intervention, which is why a single AquaOx system is genuinely a "buy once" purchase for most homeowners, compared to carbon-only systems that typically need replacement every 5 years.
Does a whole house water filter filter fluoride?
The AquaOx reduces fluoride — up to about 40% in independent lab testing — but it is not designed to take it all the way to zero. If you want fully fluoride-free drinking water, pair The AquaOx with a reverse osmosis (RO) filter at the kitchen sink, where you draw drinking water. The whole-house system handles taste, smell, chlorine, and heavy metals at every tap; the RO finishes the job on fluoride at the tap you actually drink from. See the AquaOx RO Kitchen Sink →
Is a whole house water filter worth it?
For most homeowners, yes, but specifically when you're concerned about contaminants that affect more than just drinking water. Chlorine in shower water can irritate skin and lungs. Hard-water residue damages appliances. Heavy metals leach from old plumbing throughout your home, not just at the kitchen sink. A whole house system is the only category of filter that addresses your entire water supply, not just one tap.
Still not sure if you need a whole house filter? Test your water →
Why AquaOx
Ultimate purity. Ultimate protection.
The difference is inside. AquaOx packs more premium filtration media into a single tank than any other system on the market, so it filters more contaminants and lasts longer.
Ultimate purity
6 layers of premium filtration media
KDF 85 · Garnet · Centaur Catalytic Carbon · Activated Coconut Shell Carbon · Filter-AG. 3× the surface contact time of competitor systems.
Patented technology
Vortech distribution plates
Double-Vortech design eliminates gravel beds, increases media efficiency, and significantly reduces water use during regeneration cycles.
Built to last
Lasts 2× longer than carbon competitors
Filter media rated for 10+ years vs. the ~5-year carbon-only systems most competitors sell. In practice, many AquaOx systems we installed 15+ years ago are still running strong.
What makes the AquaOx superior
A side-by-side look at how AquaOx compares to other whole-house systems.
| Feature | AquaOx | Other systems |
|---|---|---|
| Filtration media types | 6 distinct types | 1–2 types on average |
| Backwashing | Automatic, double-Vortech | Manual or none |
| Pre-sediment filter | Captures debris first | Often a primary stage |
| Media lifespan | Rated 10+ years | ~5 years |
| Warranty | 10-year parts & labor | 1 year typical |
| Made in | USA | Varies |
What owners are saying
"The water is better tasting. The atmosphere around the home is better. Everyone in the house is drinking more water now."
"System was straight forward and simple to install. The quality of the unit is top notch. After a couple weeks my wife and I can really tell the difference in the water running through our pipes."
"Outstanding customer service. Water is absolutely fabulous now: soft, not rotten egg smell, no bacteria, pure tasting like Fiji water."
"I did months of research and so happy I found the AquaOx. I proudly recommend this system to family and friends."
Not ready for whole-house?
Start with the AquaOx RO Kitchen Sink
A 5-stage reverse osmosis filter at the kitchen sink. Filters 99% of contaminants, including fluoride. Installs in under an hour. Great as a starter system.
Already buying an AquaOx? Add the RO for complete coverage. Your whole-house system handles taste, chlorine, heavy metals, and reduces fluoride; the RO takes fluoride all the way to zero at the tap you drink from.
A guaranteed clean-water investment
Four reasons your $4,000 is safer with us than with any competitor.
10-Year Warranty
Full parts & labor coverage.
0% APR Financing
From $167/mo with Affirm.
Made in USA
Manufactured in the United States.
BBB A+ Accredited
Verified business rating.
🇺🇸 Veteran-founded business.
Thank you for your service. Ask us about your veteran discount.
Pure water in your home, in three steps
01
Pick your system
Take our 2-minute quiz, or browse the three flagship models. Most homes are a great fit for The AquaOx.
02
Any licensed plumber installs it
Three connections at your main water line: in, out, and a drain line for the self-cleaning backwash. Most plumbers finish in 2 to 4 hours.
03
Filtered water that lasts
Every tap, every shower, every appliance. Self-cleaning. Filter media rated for 10+ years; many AquaOx systems are still going strong after 15.
Ready for clean water from every tap?
Take the 2-minute quiz to find the right system, or talk to a real human about your water.
Want to know what's in your water first? Test your water →
Common questions
What does AquaOx filter from my water?
Chlorine, chloramines, lead, mercury, arsenic, iron, sediment, herbicides, pesticides, VOCs, industrial byproducts. Over 300 contaminants in total. It also reduces fluoride — up to about 40% in independent lab testing — though for fully fluoride-free drinking water we recommend pairing it with our under-sink RO at the kitchen tap.
Do I still need an under-sink RO for drinking water?
It depends on what you want at the kitchen tap. The AquaOx filters 300+ contaminants whole-house, great for showering, laundry, dishes, and drinking. It also reduces fluoride (up to about 40% in independent lab testing), but if you want it fully removed, we recommend pairing AquaOx with our under-sink reverse osmosis at the kitchen tap — RO is the best at-home way to take fluoride all the way down.
What size do I need: Regular or XL?
The standard AquaOx is great for most homes up to 4 bathrooms. For larger homes, choose the XL. That said, the XL has the most filter media of any system on the market. If you want maximum protection and the longest possible service life regardless of home size, the XL is the move.
Do I also need a water softener?
AquaOx is a purifier. It filters contaminants but leaves healthy minerals like calcium and magnesium in your water. If you have hard water (common with well water and in much of the Southwest), you may still want a softener to prevent scale on fixtures, water heaters, and tankless heaters. The AquaOx goes first, the softener after. Not sure if your water is hard? Send us your water report and we will tell you.
Where do I install it?
Wherever your main water line enters your home, most commonly the garage. It can also go in a basement, utility room, or even buried in a crawl space (your plumber digs out a level pad). In warm, non-freezing climates like Florida, outside is fine too. Do not install outside in any climate where water can freeze.
How long does installation take?
A licensed plumber typically installs The AquaOx in 2–4 hours. AquaOx is direct-to-consumer: any licensed plumber can do it. There is no proprietary tooling or certified installer required. The install is three connections: inlet, outlet, and a small drain line.
Will this work for well water?
Yes. AquaOx is built for both city and well water. If you have specific concerns (heavy iron, hydrogen sulfide / rotten egg smell, bacteria), we offer specialty systems and add-ons. Take the quiz or call us at (803) 369-6956.
Will it protect my tankless water heater?
Yes, and we recommend it. Chlorine and chloramines degrade tankless heat exchangers over time; AquaOx filters them. If your water is also hard, pair AquaOx with a softener: tankless manufacturers will void warranties on units that scale up from hard water.
How long does the filter media last?
AquaOx filter media is rated for 10+ years. In practice, many AquaOx systems we installed 15+ years ago are still running strong. The system self-backwashes every 3 days to keep media performing, no manual maintenance required.
What's the warranty?
10-year parts & labor warranty on every AquaOx system. We stand behind every system we ship.
Do you offer financing?
Yes. Affirm offers 0% APR financing on AquaOx systems. The flagship works out to about $167/month over 24 months. Apply at checkout in seconds.
Still have questions? Call (803) 369-6956 or contact us.