Frizzlife M800 tankless under-sink RO system: features, specs and who it suits

The Frizzlife M800 is an under-sink reverse osmosis (RO) system that works without a storage tank or electricity. It filters tap water on demand for drinking and cooking, and adds minerals back in. Here is what the main specifications mean.

What tankless and non-electric mean

Traditional RO systems hold treated water in a pressurised tank, and many compact tankless units use a pump that needs power. Frizzlife says the M800 uses existing water pressure to produce water on demand, with no tank, no electricity and no pump noise. That frees cabinet space and avoids an outlet under the sink. The usual trade-off is that performance depends on your home's water pressure, so check the minimum stated in the manual.

Eight stages of filtration

Frizzlife lists eight stages. Most RO systems combine sediment and carbon pre-filters, the RO membrane itself, and a final polishing stage. The M800 adds a remineralization step, with calcium, magnesium and zinc, because RO removes minerals along with other dissolved material and the water can taste flat. Frizzlife says the system reduces heavy metals, chlorine, PFOA and PFOS.

Certification

The brand says the system is independently tested and certified to NSF/ANSI 58 and 372. NSF/ANSI 58 is the standard for RO drinking water systems, and 372 covers lead content in materials that touch drinking water. Look at the certification documents for the exact claims, because each standard covers specific contaminants.

Output and efficiency

Frizzlife rates the M800 at up to 900 gallons per day and says it delivers a steady flow that fills pots and large bottles quickly. It also lists a 4:1 pure-to-drain ratio, meaning roughly four parts filtered water to one part wastewater, which is a lower amount of drain water than many older RO systems send down the sink.

Display and filter life

A display shows real-time TDS (total dissolved solids) levels, filter life status and auto-flush reminders. A TDS reading is a useful quick indicator that the membrane is working, though it is not a test for specific substances. Stated filter lives are 12 months for the carbon block, 12 months for the remineralization filter and 24 months for the RO filter, with actual intervals depending on your water.

Size

The listing gives the dimensions as 14.9 x 5.1 x 19.7 inches (about 38 x 13 x 50 cm) and also tells buyers to check their under-sink space first.

Who it suits

It suits households that want RO drinking water without a bulky tank or a power connection, and who have the pressure and cabinet space for it.

What to check before you buy

• Space: measure the cabinet, including pipes and any garbage disposal.
• Water pressure: check the manual's minimum operating pressure.
• Faucet hole: confirm there is a spot for the dedicated faucet.
• Drain connection: the system needs a drain line, so check how it fits your plumbing.
• Replacement filters: note the schedule and where they are sold.
• Your water: consider a water report to confirm the certifications cover what you want reduced. Follow local plumbing codes.

The short version

• A tankless, non-electric under-sink RO system.
• Eight stages, including remineralization.
• NSF/ANSI 58 and 372 certification, as the brand states.
• Rated up to 900 GPD with a 4:1 pure-to-drain ratio.
• TDS display; filters rated at 12, 12 and 24 months.

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