Reverse Osmosis Instant Hot Water Dispenser System - Waterdrop K6

Reverse Osmosis Instant Hot Water Dispenser System - Waterdrop K6

2:1 pure to drain & 40-95°C Hot water temperature
Regular price £569.99
Sale price £569.99 Regular price
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  • Key Feature
    • [First-to-market Instant Hot RO System] This RO water filter system K6 integrates water purification and heating, breaking the mold of conventional under-sink RO systems.
    • [Instant Heating in Seconds] This RO water filter system K6 allows temperature adjustment in the range of 40-95℃ and is an ideal choice for making tea, baby formula or coffee, or cooking.
    • Please note that the temperature of water you get may vary because of external factors like weather, cup temperature, etc.
    • [5-stage Deep Purification] Its 5-in-1 filter includes an RO membrane, carbon blocks, PP cotton and other filtration substances, effectively reducing TDS, chromium, PFAS, fluoride, arsenic, salt, heavy metals, nitrates, particles, chlorine and other harmful substances through fine filtration.
    • [Smart Design] Its smart display faucet allows you to get the TDS level and filtration conditions of water clearly. Besides, this system also has functions of a child lock and dispensed water temperature indication to avoid the scalding risk, bringing a smart and convenient life experience.
    • [Safety Guaranteed] This RO water filter system K6 can automatically monitor the water purification process, and it also comes with a built-in flowmeter, NTC and a heating overheating protection function to prevent dry burn and guarantees the safety while achieving energy conservation.
    • [2:1 pure to drain] With its high capacity of 600 GPD/2,271 L and high hot water flow rate of 0.4 gal/min, it can fill a cup with water within seconds. This RO water filter system has a high pure to drain ratio of 2:1, which saves water efficiently.
    • [Quality Structure] Its shiny stainless steel nickel-plated faucet is oxidation-resistant and low in allergy while its upgraded Teflon tube is heat-resistant up to 500℉ (260℃), durable, and reliable.
    • Please note that after initial installation and flushing, please manually activate the heating module for temperature setting. The heating indicator will not be available during the flushing state.
    • [Effective elimination of hardness ions]: Reverse Osmosis system uses physical isolation and filtration processes to efficiently remove calcium and magnesium ions from water, thus reducing water hardness. It also eliminates a range of impurities, soluble salts, and organic substances, resulting in drinking water that boasts excellent taste and texture.
Free Shipping ×
Shipping policy

Shipping rates and delivery estimates

Shipping Method

Estimated Delivery Time


UK Standard Shipping

2-4 Business Days


UK Express Shipping

1-2 Business Days


* Shipping charges for your order will be calculated and displayed at checkout.

* The Delivery Time is calculated based on the shipping date, not the order date. The actual shipping date can be delayed due to invalid shipping address, weekends/holidays, etc.

Handling Time:

We need 24h to 48h to prepare your order, most of the packages will be shipped out within 24 hours except weekends and holidays.

Track your order

Once your order is shipped, you will receive an email from us containing the tracking information. Tracking information is also available in your "Order Details" page.

Shipping areas

The products can be delivered to the most regions of the UK except military BFPO address (postcode starting with BT, BFPO, BF1, HA46DQ, D18CX65, E41TR26, D24HK7D), Channel Island (GUERNSEY, JERSEY, IRELAND).

International shipping

We are sorry that the international shipping service is not supported for the time being.

Shipping Carriers

Amazon functions as our logistics partner to ship out Waterdrop products. They will choose the carrier that they think works best for our customers.
Note: We don't accept requests to specify a certain carrier to deliver the package.

Shipping origin

We work with multiple Amazon warehouses in the United Kingdom, will arrange shipments from closest warehouse nearby your address.

* If you have any questions, you can contact our customer contact customer service within 24h for help via LiveChat or email to, we will reply to you as soon as possible!

14-Day Return ×
Return & Refund policy

Thanks for shopping at Waterdrop. We appreciate the fact that you like to buy the stuff we build. We also want to make sure you have a rewarding experience while you’re exploring, evaluating, and purchasing our products.

Order Cancellations:

If you wish to cancel an order, please contact our customer service team.

1. If you contact us within 24 hours of purchase:

Since most orders ship the same day, kindly email us at contact or call us at (888)-352-3558 within 24 hours of placing the order. There will be no cancellation fees for standard items canceled before shipment. If the package has already been shipped, we will provide a prepaid label for return, and once we receive the package from you, we will issue a refund.

2. If you contact us after 24 hours of purchase:

  • In such cases, you will need to bear the shipping fee if the package is already shipped (subject to our system status, not the order status).
  • The product must be damage-free, packed in the original packaging we sent to you, and returned with the original receipt of purchase.
  • We will process your refund after receiving the package.

14-day Risk-free Return Policy:

  • You are eligible to return any item* within 14 days of receipt.
  • All returned items must be disassembled and repackaged as they were originally received.
  • The 14-day risk-free return policy applies to all item*.
  • No restocking fee will be charged, but customers are responsible for the return shipping cost.
  • Please note that the 14-day risk-free return policy is only valid for orders* within the continental United Kingdom.

Return after 14 Days of Receipt:

  • You may still return any item after 14 days of receipt.
  • In this case, customers are responsible for the return shipping cost. The total cost of shipping will be deducted from your refund.
  • All returned items must be disassembled and repackaged as they were originally received.
  • A 10% restocking fee will be applied for all returned products.

1-year Warranty:

Enjoy peace of mind and confidence in your purchase with our 1-year warranty, backed by lifetime technical support.

If you receive a damaged item and wish to file a claim, please email with your order information and a picture of the damaged or incorrect product. We are eager to assist you.

For products that become defective during the warranty period due to a quality issue, rather than your own breakage or misuse, we can accept a free return, provide free repair service, or issue a new replacement.

Exchange Policy:

1. Defective Products:

If you receive a product with quality issues or damages, please contact our customer service team within 30 days of receipt. We will provide you with a free exchange service. Please provide order information and photos of the damaged product when contacting our customer service team for better assistance.

2. Non-Quality Issues:

If you wish to exchange a product for non-quality-related reasons, please note the following:

  • The product must be within 30 days of purchase and unused.
  • The product must be returned in its original packaging, along with the original purchase receipt.
  • You will be responsible for the re-shipping costs.
  • Please note that the exchange policy is only applicable to orders made on the official

How to Return a Product?

If you would like to return a product, please follow these guidelines:

Step 1: Contact our customer service team before returning a product. We will respond with return instructions within 24 hours.

How to contact us:


Toll-free Tel: (888)-352-3558

Step 2: Prepare the package after receiving confirmation from the customer service team, and please note the following requirements:

  • Include the order number in the package. You can print out the order detail page or leave a note inside the package.
  • Ensure the package contains the original receipt of purchase.
  • Return the product in the original packaging we provided.
  • The product must be damage-free (this does not apply to defective products, as damage will void the refund).

Step 3: Contact our customer service and provide your return tracking number. We will track the package and process your refund within 5 working days after receiving and inspecting the package.

General Information for All Returns:

  • You are responsible for shipping the products to the return address provided.
  • Returned items will undergo inspection before issuing a refund.
  • Refunds will be processed within 5 working days after the item has been inspected, and it may take 4-7 days to be reflected in your credit card statement.
  • We highly recommend using a traceable and insurable shipping method for your return. We are not responsible for returns lost or damaged in transit, and you will need to file a shipping claim.
  • Please note that orders made via 3rd-party sellers, including Amazon, are not eligible for our return policy.
  • All returned items must be disassembled and repackaged as they were originally received. Items returned in a condition other than "like new" will be subject to a 10% restocking fee to cover repairs or part replacement. The restocking fee will be deducted from your refund.

Return Address:

Contact our customer service for a return address.

Note: If you are returning a Reverse Osmosis or any other large / high value item (that cost more than £100) you must contact us. Large / Special Items Please note that the following large / high value items must be returned in their original condition or at least in a reasonable / re-sellable condition. The above special items which have been opened will only be refunded if they prove to be faulty, or damaged.

Price Match Policy:

At Waterdrop, we highly value our customers' shopping experience. That's why we offer a 30-day price match guarantee. If you happen to notice a price reduction on the item you purchased at within 30 days of your purchase, you are eligible to claim a price-match refund. To request a refund, please contact us at We are here to assist you promptly.

Note: This Waterdrop price-change refund policy only applies to items shipped and sold by If you're buying from a different vendor, you'll need to contact that seller if the price drops.

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Reverse Osmosis Instant Hot Water Dispenser System - Waterdrop K6

Regular price £569.99
Sale price £569.99 Regular price
Hear it Straight From Our Pros and Users
Waterdrop K6, an RO drinking filter with an instant hot water feature. The installation was completed in just 15 minutes. The filter offers annual filter replacement, reducing the use of plastic water bottles.
The filter has an intelligent temperature control system with adjustable temperatures for various beverages and safety measures like a child lock and temperature controls to prevent burns.
WATEX Exhibition
Waterdrop Distributor Participates WATEX Exhibition in UAE!! Waterdrop RO systems are well received!! We hope more people can enjoy a new water drinking experience with Waterdrop!
Model number
WD-K6-W(Also named as WD-KJ-600)
Product dimensions
18 x 17 x 7 inches
Item weight
31.9 pounds
Maximum daily capacity
600 GPD
Feed water pressure
14.5-87 psi/0.1-0.6MPa
Feed water temperature
Hot water temperature
Smart LED faucet
Feed Water Requirement
Municipal tap water
Faucet appearance
Brushed nickel
In the box
System*1, Feed water adapter 3/8”-1/2”*1 and Inlet water tubing*60”, Pure water tubing*60”, Hot water tubing*60”, Smart faucet*1, Drain water tubing*60”, Lock clip*6, Drain saddle*1, Teflon tape*1

Can the system be connected with an MNR remineralization filter for use?

Yes, it can be connected with an MNR remineralization filter for use, but the MNR filter can only be connected to a cold water pipe.

Can the system be connected with a UV water sterilizer?

Yes, it can be connected with a UV water sterilizer, but the UV water sterilizer can only be connected to a cold water pipe. And it requires an extra power plug (UV requires extra power).

Can the K6 system be connected to a refrigerator or an ice maker?

No, it cannot be connected to a refrigerator or an ice maker.

Does Waterdrop K6 instant hot Reverse osmosis system waste a lot of water?

No. The pure to drain ratio of this system is 2:1. For every two cups of pure water you get, only 1 cup of wastewater is produced.

How often should I change reverse osmosis instant hot water filters?

The lifespan of the composite filter is 12 months or 1,600 gallons. The color change on the system and faucet can indicate the lifespan status of the filter.

Is it convenient to replace the filter of Waterdrop K6 instant hot Reverse osmosis system?

Yes. The system adapts the twist-and-pull filter design. The filter can be replaced directly without shutting off the water source or power supply.

Can this system use my own faucet?

No,you cannot use your own faucet, the machine must be controlled with its own unique faucet.

What size hole would I need to drill to install the faucet in my sink?

It's recommended to drill a hole of 1". If there's a reserved hole for the soap dispenser on your countertop, you could use that to install the RO faucet directly. In addition, we have included a sticker in the package, which could be used as a reference while drilling the hole.Remember to wear safety glasses to protect your eyes while drilling the faucet hole.

Is Waterdrop K6 instant hot Reverse osmosis system noisy?

No. The system works very quietly, and you will hardly hear any noise.

Can I immediately get hot water after setting the temperature?

After you set the desired temperature and the light indicating a heating status goes out, you can take the hot water for drinking, and the faucet will display the temperature of dispensed water. It only takes about 15 min to heat water from room temperature to 203℉, and please wait patiently.
Please set desired temperature in advance. When the dispenser starts heating, you can get hot water directly without waiting. There can be external factors that will ultimately affect the temperature of water, including weather, temperature of cup.

How do I start the heating function to get hot water after installing the system?

To guarantee the safety, please manually turn on a heating switch on the system after flushing when the system is used for the first time, then, adjust the temperature by pressing a “△” key and a “▽”key on the faucet or system, and you can get hot water after the light indicating the heating status goes out.

Can I turn off the heating module when heating is not required?

Yes. All that is required is to turn off the heating switch on the system, and turn on it again when the heating function is required.

How many modes of heating temperatures can I set?

The heating temperature can be set as you wish in the range of 104-203 ℉. Press the “△” key to adjust the temperature at an interval of 1 ℉, and hold the “△” key to rapidly adjust the temperature.

Is Waterdrop K6 instant hot Reverse osmosis system safe?

Yes. The K6 product adopts comprehensive safe design and comes with child lock and water dispensing temperature indication. The system is also built with a flowmeter, NTC and a heating overtime protection function to prevent dry burning of water.
Hot steam of the tank is drained from the drain pipe, and the system is designed with anti-scalding cotton to avoid scalding.
5-stage Filtration, Crisper Taste
The K6 RO system adopts a 5-in-1 integrated filter, which can effectively reduce multiple harmful substances.
No Limescale, Long-effect Operation
The system cannot form limescale inside, which reduces users’ trouble of liner cleaning.
Instant Hot Water at Any Temperature
One RO system can meet your demands for hot water at different temperatures without other heating water dispensers.
Please Note:
1. 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.
2. 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.
3. The system cannot be connected to a refrigerator or an ice maker.
High-end Smart Touch Display Faucet
The smart faucet allows you to get the water temperature and TDS level at a glance,bringing smart and convenient life experience.
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Need Installation ×
Flow Rate 600 GPD 600 GPD 600 GPD 75 GPD
Pure to Drain Rate
Drain ratio stands for the ratio of wastewater and purified water dispensed by a RO system. For example, the 3:1 drain ratio means it uses up a gallon of wastewater for every 3 gallons of pure water you get.

Pure to Drain Rate Pure to Drain Rate Pure to Drain Rate Pure to Drain Rate
Faucet Smart faucet Smart faucet Ordinary faucet /
Display Filter lifespan & TDS Filter lifespan & TDS & Temperature adjustment Filter lifespan Filter lifespan & TDS
Self-clean ×
Holiday mode ×
Electricity Required
Filter Cartridges WD-G3-N1CF



Filter Lifespan CF-6 Mths
CB-12 Mths
RO-24 Mths
12 Mths CF-12 Mths
P6MRO-24 Mths
12 Mths
Dimensions (inch) 18.11*5.67*17.73 6.7*17.5*16.6 17.32*5.91*13.9 13.8*7.9*16.3

Customer Reviews

Based on 5 reviews
Matthew Whiting
Taste the difference

Honestly hard to drink water from other people’s, and my Tea tastes better.
The install was fairly simple, and you don’t see it hitting the Smart meter on electricity.
I look forward to them releasing a Tap in Black.

aisha khan
Not happy can someone call me for my error

I placed an order connected my device and now I have an error code


For a first-of-its-kind product, this is going to be hard to beat. The hot water is great and the taste is clean. I'm really impressed.

Zoheil Khaleqi
fantastic solution indeed

I must say, this hot water heater is a fantastic solution indeed! It lives up to its description with good water flow and instant hot water. As for the noise, it's not too bad, and you only hear it for a few seconds.

Great Product especially instant hot filter water

We purchased this to get purified water in the house to replace the water subscription. It is easy to set up and after using it for about 2 weeks, we felt the water taste good, and it is worth having filtered water for drinking. This water purifier is excellent!! Highly recommend. Water quality and taste are superb. It meets my expectation of having instant hot water which rarely available in water filter product so this product meets all my expectations.