Drinking Water Systems
Best SellerHW800 AlkaPro Tankless RO
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
Reverse osmosisNSF/ANSI 58Dedicated faucet includedFive faucet finishes
What you get
- 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
Key specifications
- Type
- Tankless, under-sink
- Filtration stages
- 7
- Production
- 800 GPD, made on demand
- Flow rate
- 0.53 GPM
- Filtration precision
- 0.0001 micron
- Waste ratio
- 2:1
- Remineralization
- Built-in alkaline stage
- Faucet
- Dedicated, five finishes
- Cabinet space
- No storage tank
- Filter changes
- Quick-connect cartridges, DIY
- Monitoring
- Faucet-mounted monitor
- Pairs with
- Any whole-home system, or on its own
Installation, upkeep & warranty
- Installation
- Arranged with an independent licensed professional — dedicated faucet, drain saddle, cold-water tie-in
- Location
- Under the kitchen sink, or wherever the drinking tap goes
- Upkeep
- Owner-replaceable quick-connect cartridges
- Certification
- NSF/ANSI 58
- RO system warranty
- 1 year
- Labor warranty
- 1 year from date of purchase
Specifications from the manufacturer's documentation. Component brands and certifications are those of their respective manufacturers.
What reverse osmosis removes
- Arsenic
- Fluoride
- Uranium and chromium-6
- Sediment and dissolved solids
- Nitrate and nitrite
- Lead and heavy metals
- Chlorine and disinfection byproducts
- Mineral taste and odor
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 when we pull your water report.





Warranty
1 year
The RO system
1 year
Installation labor
5 years
Media and filter stages
A closer look



