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WaterHaus Co. — water filtration for a healthier home
Tankless reverse osmosis unit under a sink, feeding its own drinking water faucetBest seller

Drinking Water Systems

Tankless Reverse Osmosis — 800 GPD

800 gallons a day, 7 stages, no bulky tank under your sink.

Tankless reverse osmosis that filters down to 0.0001 microns — fine enough to take out lead and other heavy metals, dissolved solids, chlorine and common contaminants. Because it's tankless, you get water on demand and your under-sink cabinet back.

Best for: Anyone who wants better drinking and cooking water

Free in-home water testExact price before you decide

What you get

Features

  • 800 GPD tankless reverse osmosis
  • 7-stage filtration at 0.0001 micron precision
  • Removes lead and other heavy metals, dissolved solids and chlorine
  • Coconut-shell carbon block post-filter for taste
  • Faucet color-matched to your appliances
  • Quick-connect fittings — filter changes you can do yourself

Full specifications

Reverse osmosisNSF/ANSI 58Dedicated faucet includedFive faucet finishes

Key specifications

TypeTankless, under-sink
Filtration stages7
Production800 GPD, made on demand
Flow rate0.53 GPM
Filtration precision0.0001 micron
Waste ratio2:1
RemineralizationBuilt-in alkaline stage
FaucetDedicated, five finishes
Cabinet spaceNo storage tank
Filter changesQuick-connect cartridges, DIY
MonitoringFaucet-mounted monitor
Pairs withAny whole-home system, or on its own

Installation, upkeep & warranty

InstallationIncluded — dedicated faucet, drain saddle, cold-water tie-in
LocationUnder the kitchen sink, or wherever the drinking tap goes
UpkeepOwner-replaceable quick-connect cartridges
CertificationNSF/ANSI 58
RO system warranty1 year
Labor warranty1 year from date of purchase

What reverse osmosis removes

  • Arsenic
  • Nitrate and nitrite
  • Fluoride
  • Lead and heavy metals
  • Uranium and chromium-6
  • Chlorine and disinfection byproducts
  • Sediment and dissolved solids
  • Mineral taste and odor

Warranty on this system

1 year
The RO system
1 year
Installation labor
5 years
Media and filter stages

Specifications from the manufacturer’s documentation. Component brands and certifications are those of their respective manufacturers.

Book your free water test

Prefer to talk it through? Call (615) 403-0790.

Colour matched

Pick a faucet that matches your kitchen

The drinking water faucet is the only part of this system you actually see, so it comes in five finishes. Tell us which at the water test.

Brushed nickel drinking water faucet
Brushed nickel
Chrome drinking water faucet
Chrome
Brushed gold drinking water faucet
Brushed gold
Matte black drinking water faucet
Matte black
Oil-rubbed bronze drinking water faucet
Oil-rubbed bronze

Also in drinking water systems

Five-stage reverse osmosis system with pressurized storage tank and dedicated faucet

5-Stage Tank Reverse Osmosis

The classic under-sink RO. Proven, simple, affordable.

View details →

Reviews

From people who had one installed

Free water test

Find out what's actually in your water

We'll test your water at your kitchen sink, show you the result, and tell you what — if anything — you need. Free, and there's no system that fits every house.

  • Free in-home water test
  • Exact price up front
  • Locally owned