Waterdrop - K6 Reverse Osmosis Instant Hot Water Dispenser System - White
About this product
The first-to-market Reverse Osmosis system with heating function. Waterdrop K6 water filter system integrates water purification and heating, meets various temperature demands and breaks through a conventional under sink RO water purification mode; it has a high capacity of 600 GPD (gallons per day) and a high hot water flow rate of 0.4 gal/min (gallons per minute), meeting your demands for water purification and hot water.
Hot water on demand
Allows step-less temperature adjustment in the range of 104 degree Fahrenheit to 203 degree Fahrenheit, an ideal choice for cooking soup, making instant coffee, tea and oatmeal or other household tasks.
Five stage deep filtration
The 5-in-1 filter is built with an RO membrane, a carbon block, PP cotton and other filtration substances that can effectively filter out TDS, chromium, pfas, fluoride, arsenic, salt, heavy metals, nitrate, particles, chloride, and other harmful substances.
Highend smart display faucet
Includes a touch digital display faucet where the TDS level and filter condition is available at a glance. Allows temperature adjustment easily on the faucet, bringing a smart and convenient life experience.
Save space, save water, save money
Easy installation and filter changing. This tankless RO water filtration system saves 70% of your under sink space, has a 2:1 pure to drain ratio, all with a filter lifespan of up to one year.
Outstanding safety performance
The K6 system monitors the water purification process, includes a child lock and a water dispensing temperature indicator to avoid scalding risks and ensure safety. Built with a flowmeter, NTC and a heating overtime protection that prevents dry burning of water.
Temperature setting
After the system is installed for the first time and is flushed, please manually turn on the heating module for temperature setting, in a flushing status, the heating indicator is not available.
Connection note
The system can be connected with an MNR remineralization filter for use, but the MNR filter can only be connected to a cold water pipe. The system cannot be connected with a refrigerator or an ice maker.
Temperature note
There can be external factors that will ultimately affect the temperature of water, including weather and the temperature of the cup. Hot steam of the tank is drained from the drain pipe and the system is designed with anti-scalding cotton to avoid burns.
Heating time note
It can take some time to heat water in the tank to the present temperature. It takes about 15 minutes to heat water from the room temperature to 203 degree Fahrenheit.
Circuit connection note
The current of the system is 7 amps. For safety's sake, it is recommended that a separate circuit serving only the instant hot water dispenser be provided.
- BrandWaterdropModel NumberB-WD-K6-WProduct NameK6 Reverse Osmosis Instant Hot Water Dispenser SystemColorWhiteProduct Height18 inchesProduct Width7 inches
Reviews
Rating 3 out of 5 stars with 2 reviews
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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The first-to-market Reverse Osmosis system with heating function. Waterdrop K6 water filter system integrates water purification and heating, meets various temperature demands and breaks through a conventional under sink RO water purification mode; it has a high capacity of 600 GPD (gallons per day) and a high hot water flow rate of 0.4 gal/min (gallons per minute), meeting your demands for water purification and hot water.

The Waterdrop G3P600 is a tankless under sink reverse osmosis system with 8-stage filtration, certified by NSF/ANSI 42, 58, and 372, as well as FCC, EU, and UKCA standards. Tested by SGS, it effectively reduces TDS, PFAS, fluoride, heavy metals, salts, and other contaminants, delivering up to 600 GPD with a 2:1 pure-to-drain ratio. Its smart display faucet provides real-time TDS monitoring and filter life tracking, while the sleek tankless design saves 70% under sink space and allows quick 3-second filter changes without tools. This system requires under-sink electricity and offers fast, stable water flow ideal for daily drinking and cooking.

The Waterdrop G3P600 is a tankless under sink reverse osmosis system with 8-stage filtration, certified by NSF/ANSI 42, 58, and 372, as well as FCC, EU, and UKCA standards. Tested by SGS, it effectively reduces TDS, PFAS, fluoride, heavy metals, salts, and other contaminants, delivering up to 600 GPD with a 2:1 pure-to-drain ratio. Its smart display faucet provides real-time TDS monitoring and filter life tracking, while the sleek tankless design saves 70% under sink space and allows quick 3-second filter changes without tools. This system requires under-sink electricity and offers fast, stable water flow ideal for daily drinking and cooking.

8 Stage RO Water Filtration System, 2:1 Pure to Drain, Smart LED Faucet






















































