Under-Sink 5-Stage Reverse Osmosis System — Complete Home Kit
Under-Sink 5-Stage Reverse Osmosis System — Complete Home Kit
Under-Sink 5-Stage Reverse Osmosis System — Complete Home Kit
This 5-stage under-sink reverse osmosis system is a complete home installation kit for homeowners who want a dedicated drinking water filtration system connected directly to their cold water supply. Everything needed for installation is included in the box.
Best for:
- Homeowners ready to install a permanent under-sink RO system
- Families switching from bottled water to filtered tap water
- Anyone replacing an existing under-sink RO system
- DIY-comfortable homeowners with basic plumbing tools
Key benefits:
- Complete kit — filters, membrane, storage tank, faucet, tubing, and hardware included
- 5-stage filtration sequence: sediment, carbon block (x2), RO membrane, post-carbon
- 3.2-gallon pressurized storage tank
- Dedicated RO drinking water faucet included
- No extra purchases required for initial installation
Compatibility:
Requires access to a cold water supply line, a drain line, and a countertop or sink with a pre-drilled faucet hole (or ability to drill one). Verify your under-sink space dimensions before ordering. A drain saddle is required for drain line connection — verify inclusion with supplier before ordering.
What’s included:
- Stage 1: Sediment filter
- Stage 2 & 3: Carbon block filters
- Stage 4: 75 GPD RO membrane
- Stage 5: Post-carbon inline filter
- 3.2-gallon pressurized storage tank
- Drinking water faucet (verify lead-free certification with manufacturer documentation before purchase)
- Tubing, fittings, and mounting hardware
- Installation guide
Replacement schedule:
General guidance — sediment and carbon filters every 6 months; membrane and post-carbon filter annually. Annual replacement filter kits are available in our store.
Installation notes:
DIY-friendly for homeowners with basic plumbing experience. Most installations take 1–2 hours. Requires drilling a faucet hole if one is not pre-existing. No soldering required.
If you are responding to a local utility notice or boil-water advisory, follow your local utility or health department’s official instructions first. This product is not a substitute for official emergency water guidance.
Certification and contaminant reduction claims depend on manufacturer documentation for the specific product. Verify faucet lead-free certification and all performance claims with the manufacturer before purchase.
Frequently Asked Questions:
Do I need a plumber to install this?
Most homeowners with basic DIY experience can install this system. A plumber is not required but may be preferred.
Does this system reduce heavy metals?
Contaminant reduction claims depend on the specific manufacturer documentation. Verify before purchase.
Is the faucet lead-free?
The faucet is described as lead-free by the supplier. Verify NSF/ANSI 61 or equivalent certification with manufacturer documentation before purchase.
What is the GPD output?
Verify the specific GPD rating with manufacturer documentation for your unit.
What if I received a water notice?
Follow your utility or health department’s official instructions first. This product is not a substitute for official emergency water guidance.