City water. Smaller homes.
Carbon by AquaOx
A carbon-only starting point when chlorine, taste and odor are your main concerns.
- Up to 3 bathrooms
- 12 GPM peak flow
- 5 years tank & control valve warranty
Whole-House Filtration
Whole house water filters. One system, every tap.
Whole-house filtration treats your water once, where it enters your home. Your shower, kitchen tap, laundry, dishwasher, ice maker, and every faucet downstream receive water treated by the system you choose. Compare carbon and multi-media options for your home.
Find your fit.
Three whole-house systems. Start with your water source, then size for the way your home uses water.
Our multi-media flagship.
The AquaOx
A larger treatment bed for city water or a well-water setup built around your water test.
- Up to 4 bathrooms
- 15 GPM peak flow
- 10 years tank & control valve warranty
More capacity for larger homes.
The AquaOx XL
Our larger multi-media system for homes with higher simultaneous water demand.
- 5+ bathrooms; confirm demand
- 37 GPM peak flow
- 10 years tank & control valve warranty
Bathroom counts are a starting point. Confirm simultaneous demand and treatment requirements before choosing. Carbon is designed for city water; on a well, start with a water test and The AquaOx. Installation and optional equipment are additional.
Iron stains, sulfur odor or another specific concern?
Find the right treatment pathTake the system quizCompare the details that matter.
A bigger tank is only useful if it suits your water and your home. Compare the fit before you compare the price.
| Your decision | Carbon by AquaOx | The AquaOx | The AquaOx XL |
|---|---|---|---|
| System price from | $999 | $2,499 | $3,499 |
| Water source | City water only | City or well, with appropriate pretreatment | City or well, with appropriate pretreatment |
| Home-size starting point | Up to 3 bathrooms | Up to 4 bathrooms | 5+ bathrooms; confirm demand |
| Published peak flow | 12 GPM | 15 GPM | 37 GPM |
| Treatment bed | Carbon | Multi-media bed | Larger multi-media bed |
| Tank dimensions | 10" × 44" | 10" × 54" | 13" × 54" |
| Backwashing | Automatic; needs drain access and power | Automatic; needs drain access and power | Automatic; needs drain access and power |
| Maintenance | Check operation; replace media when exhausted. Additional stages have their own schedules. | Check operation; replace media when exhausted. Additional stages have their own schedules. | Check operation; replace media when exhausted. Additional stages have their own schedules. |
| Tank & control valve warranty | 5 years · Read warranty PDF | 10 years · Read warranty PDF | 10 years · Read warranty PDF |
Peak flow is not a treatment guarantee.
Peak flow describes the published maximum flow. Contaminant reduction also depends on contact time, incoming water and media condition. Ask us to confirm the treatment flow for your water report and busiest time of day.
Count what runs together.
Two showers, laundry and a kitchen tap place a different demand on a system than one shower alone. Include high-flow fixtures, supply pressure and pipe size in your sizing conversation.
Read the flow and sizing guideStart with what’s in your water.
Your water source tells us where to start. A water report helps us choose the right equipment.
City water
Start with your utility’s report and your concerns at the tap. Carbon is the entry option; AquaOx and XL offer multi-media treatment.
Compare whole-house systemsPrivate well
Start with a water test. Iron, sediment, sulfur and microbiological concerns can require different stages ahead of or after the main filter.
Plan a well-water systemIron or sulfur
Identify what is causing the staining or odor before choosing specialty equipment. A general filter is not a substitute for a treatment plan.
Explore specialty systemsHard water
A softener handles hardness. Whole-house filtration and softening serve different purposes and can be installed together.
Explore water softenersWhere it goesRead the full install guide
Installed once, where your water enters the house
Ask a licensed plumber to assess your site and quote installation. There is no proprietary tooling, no certified-installer requirement, no annual service contract.
The install
Three connections
- 1In: your main water line feeds the system
- 2Out: filtered water feeds the rest of your home
- 3Drain line: carries the self-cleaning backwash water to any household drain
Garage
Most commonClimate-controlled, easy drain access, and your main water line usually enters here. The default for most homes.
Basement or utility room
Same idea as garage: find your main shutoff and the AquaOx goes next to it. Often near the water heater.
Crawlspace
If your main enters under the house, your plumber must confirm a stable, accessible, freeze-protected installation with enough clearance.
Outside
Warm climates onlyOnly where the system can be protected from freezing and weather in accordance with its installation instructions.
Different concerns. Different treatment.
Find out what a water report means, then confirm a model’s documented reduction capability. This list describes concerns to investigate, not a claim that every AquaOx model removes them all.
Chlorine
Municipal disinfectant
Learn about chlorineChloramine
Check your utility’s treatment
Learn about chloramineLead
Consider plumbing and point-of-use treatment
Learn about leadIron
Test before selecting a specialty stage
Learn about ironPFAS
Review a specific reduction claim
Learn about pfasArsenic
Needs a contaminant-specific plan
Learn about arsenicMercury
Confirm the relevant performance data
Learn about mercuryFluoride
Evaluate dedicated drinking-water treatment
Learn about fluorideKnow what you’re buying.
Match the exact model to your water. Read the warranty, review the installation requirements and ask for performance information for the contaminant you want to reduce.
See product documentationModel-specific warranties
Ask for the relevant test information.
A media or component certification is not the same as certification of a complete system. Ask about the exact model, contaminant, tested flow and capacity.
Request performance informationLook beyond the sticker price.
A whole-house water filter has an equipment cost, an installation cost and an upkeep budget. Build an estimate for your own setup.
Automatic backwashing does not mean maintenance-free. The tank uses water to rinse the bed, the valve needs power, and media eventually needs replacement. Add-on equipment has its own upkeep.
Read the complete cost guideYour ownership estimate
Enter your quotes and estimates below. Use 0 only where no expense applies. This worksheet does not assume AquaOx costs less than another system.
Estimated total
System + installation + media replacement + years × annual expenses. An estimate in today’s dollars; excludes tax, shipping, financing, inflation and unplanned repairs. This is not a quote or a prediction of filter life.
Make the decision with the details.
Which system is best?
Four system types compared by name, and how to narrow them to one for your water.
What will it cost?
Equipment, installation and the expenses to plan for over time.
What size do I need?
Understand peak demand, treatment flow and water pressure.
How long will it last?
Separate media life, maintenance and warranty coverage.
Is whole-house right for me?
When to choose a whole-house system, a softener or a kitchen filter.
Build the right bundle
Two add-ons most homes eventually want
For hard water
Water softener
Installs after the AquaOx. Prevents scale on your water heater, tankless heater, fixtures, and dishes. Standard in most of the South, Southwest, and well-water regions.
Browse softeners
For fluoride
Under-sink RO
Reverse osmosis at your kitchen tap. The most effective way to filter fluoride from drinking and cooking water. Pairs perfectly with The AquaOx upstream.
See the RO system★★★★★4.81 from 191+ verified owners
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 sure which system fits?
Five questions, two minutes. We'll match you to the right system and add-ons.
Whole-house water filter questions
The questions we hear most when people are comparing options.
How much does a whole-house water filter cost?
Start with the current system prices shown above, then add installation and any specialty treatment. Ask your plumber for a site-specific quote. Include water, power, testing, replacement media and any add-on consumables when comparing ownership costs.
Which AquaOx system should I choose?
Carbon is our city-water option for smaller homes where chlorine, taste and odor are the main concerns. AquaOx and XL use multi-media beds for larger treatment needs. Choose using your water report and simultaneous water demand, not bathroom count alone.
Will a whole-house filter affect water pressure?
Every treatment setup adds some resistance to flow. The published peak flows are 12 GPM for Carbon, 15 GPM for AquaOx and 37 GPM for XL. Those numbers do not guarantee contaminant reduction at peak flow. Have your plumber and AquaOx confirm sizing for your pressure, fixtures and water conditions.
Does it work for city and well water?
AquaOx and XL can be part of a city or well-water treatment setup. Well water needs testing to identify required pretreatment or disinfection. Carbon is a city-water system. Every AquaOx warranty applies only to systems installed on potable water supplies that meet drinking-water standards, so have well water tested first.
Is a whole-house filter the same as a softener?
No. Filtration and softening do different jobs. A softener addresses calcium and magnesium hardness; a filter is selected for the contaminants it is designed to reduce. If you need both, have the equipment and installation order specified for your water.
Does automatic backwashing mean no maintenance?
No. Backwashing rinses the media bed, but it does not give exhausted media unlimited life. Check system operation, follow the maintenance instructions and budget for eventual media replacement. Prefilters, UV, RO and softeners have their own maintenance requirements.
Can I install it myself?
We recommend a licensed plumber. Installation requires suitable main-line connections, a drain arrangement that meets local requirements, power and access for service. Get the current instructions for your exact model before planning the installation.
What if fluoride is my main concern?
Do not assume a general whole-house carbon or multi-media filter meets a fluoride target. Discuss a model-specific treatment option, including under-sink reverse osmosis where appropriate, and review its documented reduction performance. No system should be described as producing fluoride-free water without evidence.
Where can I check the warranty and performance information?
The documentation section links the warranty for each model. Carbon has a five-year tank and control valve warranty; AquaOx and XL have ten-year coverage, subject to their terms. Contact us for model-specific performance information and installation instructions.
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.
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