- Home
- Reverse Osmosis
- Zenith® Guardian RO800
Whole Home Water Treatment with Guardian RO800
5-Star on Google | BBB Accredited
Better water throughout the house, with fresh reverse osmosis drinking water at the kitchen sink.
This coordinated approach treats city water in two places. Carbon filtration and salt based softening work at the main water line, while the tankless Guardian RO800 provides drinking and cooking water from a dedicated kitchen connection.
- PureStart catalytic carbon filtration at the main water line
- Metered salt based softening with 10% cross linked resin
- Guardian RO800 tankless drinking water at the kitchen sink
- Smart TDS display and filter life indicators
- Professional installation and local support
- Free in-home testing
- Clear recommendations
- No pressure to buy
One coordinated system, two treatment points
Each stage has a clear job, so you get whole home improvement without confusing it with point of use reverse osmosis.
Carbon filtration serves every tap
PureStart uses AQUASORB CX MCA catalytic carbon to improve the taste, smell and quality of municipal water before it moves through the home.
Hardness is treated for daily household use
A metered ion exchange softener uses 10% cross linked resin to reduce calcium and magnesium. Size and tank configuration follow the water test.
Guardian RO800 delivers drinking water on demand
The compact tankless RO system is installed under the kitchen sink. It does not send reverse osmosis water to every household tap.
One local team coordinates every stage
Zenith tests the water, reviews household demand, sizes the equipment and completes the installation with a clear walkthrough.
A practical way to improve water across your home
Every tap
Carbon filtration and softening work before water reaches rooms, fixtures and appliances.
Kitchen RO
Tankless reverse osmosis provides fresh drinking and cooking water on demand.
Softer water
Ion exchange reduces the minerals responsible for hardness and scale.
Local support
Zenith installs, explains and services the complete setup in Indianapolis.
Smart drinking water without a bulky storage tank
The RO800 combines three cartridges and seven filtration layers with live water quality information. Its tankless design keeps the kitchen stage compact while supporting on demand output.
Published system details
Final equipment and written terms are confirmed after testing and a household demand review.
The RO800 is a point-of-use drinking water system. Performance depends on incoming water, pressure, temperature, maintenance, and correct sizing.
Installed, tested and explained clearly
A combined installation is not re warranted as one package. Each component keeps its own coverage, and the written terms supplied with your installation apply.
Test and Review
Zenith reviews your water, plumbing and household demand.
Select and Install
The approved equipment is professionally connected.
Verify and Explain
Your technician tests operation and explains maintenance.
PureStart filtration
10 years parts and 5 years labor.
Essentials softener
5 years parts, 5 years labor and limited lifetime tanks.
Performance softener
10 years parts, 5 years labor and limited lifetime tanks.
Guardian RO800
2 years parts and labor.
Frequently Asked Questions
Zenith technicians handle placement, plumbing connections, programming, performance checks, and a clear handover for your household.
Is the Guardian RO800 a whole house reverse osmosis system?
No. The RO800 is installed under the kitchen sink. Carbon filtration and softening are the whole home stages at the main line.
Does every current city water bundle include the RO800?
Yes. The supplied August 2026 document confirms the RO800 in PureStart Essentials, Advanced Performance and Elite Pure Water.
Why include both a filter and a softener?
They solve different problems. Carbon targets chlorine, chloramines, taste and odors, while the softener treats calcium and magnesium hardness.
Can the softener size be changed?
Yes. Zenith can configure 32k, 48k or 64k capacity and single or dual tank operation after the water test.