Why Proline®
Trusted tankless RO filtration engineered for modern homes — on-demand purified water, fewer moving parts, and a compact, efficient system that’s easy to maintain
Choose Your Package
Selected:
Tankless Reverse Osmosis System (400 GPD)
AUTHORIZED PROLINE QC® DISTRIBUTOR
Simple steps to cleaner water
Choose the Proline QC® platform, pick the right tankless RO system for your home, then keep it performing at its best with OEM replacement cartridges.
The Tankless RO System
Premium reverse osmosis with no storage tank — a slim, modern unit built with quick-change cartridges, a digital display, and high-efficiency purification designed to deliver clean water whenever you need it.
Replacement Filters & Essentials
Everything you need to keep your system performing like new — OEM Proline QC cartridges, maintenance essentials, and simple reorder options by model, including PP, CTO, RO membrane, and T33 post-carbon filters.
AUTHORIZED PROLINE QC DISTRIBUTOR
Proline QC® Tankless Reverse Osmosis Systems
Proline QC is the next evolution in reverse osmosis — a tankless, space-saving system with quick-change cartridges, integrated design, and a clear digital display for real-time TDS and filter-life tracking. Supported by Stratus for easy long-term ownership.
Why Proline QC
- Tankless innovation — on-demand RO purification in an ultra-compact footprint.
- Integrated manifold design — clean, simplified internal plumbing for a modern install.
- Unique quick-change cartridges — easy cartridge replacement with clear labeling.
- Less wastewater — efficient tankless design compared to older-style systems.
- 400 GPD-class performance — high rejection TFC membrane built for everyday use.
- Clear digital display — shows real-time TDS + cartridge life + system status.
Built for real homes
Digital monitoring
Inlet/Outlet TDS + filter life
Quick-connect install
Color-coded tubing + back ports
Leak protection
Leak detector shut-off valve included
What’s included (typical kit)
Main unit + 4 cartridges (PP sediment, CTO carbon block, RO membrane, T33 post carbon).
Accessory box typically includes the faucet + connector, 3-way ball valve, color tubing (red/blue/green), transformer, drain clamp, adapter, and instruction manual.
Kit contents can vary — confirm your specific model page for included items and replacement compatibility.
Filter stages & typical replacement timing
- PP (spun sediment): 3–12 months (pump-hour based indicator)
- CTO (carbon block): 3–12 months (pump-hour based indicator)
- RO membrane: 12–36 months (pump-hour based indicator)
- T33 (post carbon): 3–12 months (pump-hour based indicator)
Actual life varies by water quality and usage — the digital faucet/indicator helps track when it’s time.
Simple ownership
- Auto flushing — built-in flushing helps extend cartridge life and maintain performance.
- Quick cartridge swaps — rotate 90° to remove/replace, then reset the cartridge timer.
- Cold-water only connection — designed to tap into the cold supply line.
- Install-friendly — quick-connect fittings and clear tubing routing.
A few install notes (quick)
- Leave about 4 inches behind the unit for proper water flow.
- If feedwater pressure is above 60 psi, a pressure regulator is recommended.
- On first use, run water for 10–15 minutes to flush cartridges.
Shop Proline QC at Stratus
Explore the Proline QC tankless RO lineup and compatible replacement cartridges. Stratus helps you choose the right setup and keep it running smoothly with replacement guidance and compatibility checks.
What you’ll find hereTankless RO systems + cartridges
Best forSpace-saving, on-demand drinking water
SupportSetup help + replacement matching
Operating range (at-a-glance)
- Feed water: municipal tap water
- Feed pressure: 15–60 psi
- Feed TDS: ≤ 250 ppm
- Feed temp: 45–110°F
- Chlorine: ≤ 0.2 ppm
- Rejection: 90–99%
Specifications and included components vary by model. Confirm compatibility and filter requirements on the product page before ordering. Replacement timing varies by water quality and usage.
What Customers Are Saying
Real ProlineQC® installs, real water improvements—from homeowners and installers.
“Installed the ProlineQC® system under our sink and the compact footprint made a huge difference. The water tastes noticeably cleaner.”
“The ProlineQC® was straightforward to install and the quick-connect ports made the job much cleaner than older RO systems.”
“Love the digital display. It’s easy to see what the system is doing and keep track of cartridge life.”
“We replaced a bulky tank system with ProlineQC® and immediately freed up space under the sink. Great flow and clean-tasting water.”
“The ProlineQC® has been perfect for our office kitchen. Coffee, tea, and ice all taste better now.”
“Cartridge replacement is simple and the system doesn’t take up much room. Exactly what we wanted for a modern RO setup.”
