Best sellerDrinking Water Systems
HW800 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
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
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 | Included — 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 |
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.
More photos
A closer look
Color 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 assessment.
Also in drinking water systems
Free water assessment
Find out what's actually in your water
Call me and I will go through the published data for the supply that actually serves your street, then tell you what, if anything, you need. Free, and there's no system that fits every house.
- Free water assessment, no test kit theater
- One all-in number, taxes included
- You deal with the owner