- [Innovative Purified & Hot Water] Waterdrop K6 is the 1st RO system with heating function, delivering both purified & hot water in one unit.
- [High Capacity & Flow Rate] With 600 GPD capacity hot water flow rate, K6 exceeds traditional under-sink RO water purifiers, meeting your needs for water purification & hot water.
- [Instant Hot Water On-Demand] Get instant hot water (104℉-203℉) with Waterdrop K6! Perfect for cooking soup, making coffee/tea/oatmeal, and more.
- [Deep Filtration for Pure Water] 5-in-1 filter removes harmful substances such as TDS, fluoride, heavy metals and more, guaranteeing pure water every time. See WD-K6 RO system test results for more.
- [Smart Display Faucet] The high-end faucet displays TDS level & filter condition, with temperature adjustment at your fingertips for a smart & convenient life experience.
- [Safety First] K6 automatically monitors water purification & includes child lock & water dispensing temperature indication features to avoid scalding risks. Built-in flowmeter, NTC & heating overtime protection function prevent dry burning.
- [Maintenance-Free Operation] K6 prevents limescale formation inside, reducing the hassle of liner cleaning for long-lasting operation.

































Shipping rates and delivery estimates
Shipping Method |
Estimated Delivery Time |
Costs |
Economy Shipping |
4-8 Business Days |
Free |
Standard Shipping |
3-6 Business Days |
$5.99 (Free on orders over $200) |
Express Shipping |
2-3 Business Days |
$10.99 (Package Weight: Under 9 lb) |
* Shipping charges for your order will be calculated and displayed at checkout.
* Delivery time is based on the shipping date, not the order date. Please note that actual shipping dates may be delayed due to factors such as invalid shipping addresses, weekends, or holidays.
Handling Time:
We need 24 to 48 hours to prepare your order. Most packages will be shipped within 24 hours, excluding weekends and holidays.
Track your order
Once your order has shipped, you'll receive an email with tracking information. You can also find tracking details on your "Order Details" page.
Shipping origin
The package will be shipped from one of our US warehouses closest to your location.
* If you have any questions, feel free to contact our customer service via LiveChat or email us at service@waterdropfilter.com. We will respond as soon as possible!
Shipping areas
We deliver to most U.S. states. Some products can be shipped to Alaska and Hawaii for an additional shipping fee. However, We currently do not deliver to American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico, and the U.S. Virgin Islands.
International shipping
Unfortunately, we do not support international shipping at this time.
Shipping Carriers
We partner with four carriers—UPS, USPS, FedEx, and Amazon Logistics US—to ensure timely delivery
Note: We cannot accommodate specific carrier requests.
Delivery Time Exceeded
Shipping delays may occur due to weather, natural disasters, carrier issues, or high-risk orders. If your order is delayed, please contact us at service@waterdropfilter.com, and we will check the situation with the transportation company promptly. Thank you for your understanding and support.
Sales Tax
Sales tax will be collected as required by U.S. law for deliveries to the following states: AZ, CA, CO, FL, GA, IL, IN, KY, MA, MD, MI, MN, NC, NJ, NV, NY, OH, PA, TX, UT, VA, WA, WI. Rates are determined by local governments, and all collected taxes will be promptly reported to the IRS.
Thank you for shopping at Waterdrop. We appreciate your decision to purchase our products and aim to ensure a rewarding experience throughout your exploration, evaluation, and purchase process.
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 service@waterdropfilter.com 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.
30-day Risk-free Return Policy:
- You are eligible to return any item* within 30 days of receipt.
- All returned items must be disassembled and repackaged as they were originally received.
- The 30-day risk-free return policy applies to all item*.
- No restocking fee will be charged, but customers are responsible for the return shipping cost. We will cover the return postage expenses in the case of any return requests related to a quality issue.
- Please note that the 30-day risk-free return policy is only valid for orders* within the continental United States.
Return after 30 Days of Receipt:
- You may still return any item after 30 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 to all returned products. However, in the event of any return requests related to a quality issue, we offer free returns or replacement with a new product.
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 service@waterdropfilter.com 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 waterdropfilter.com.
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:
Email: service@waterdropfilter.com
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:
1. Defective Products:
If you receive a product with quality issues or damages, please contact our customer service team. we provide free returns, replacement with a new product, and comprehensive technical support.
2. Non-Quality Issues:
- 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:
Ecolife Technologies, Inc.
1951 S Lynx Pl,
Ontario, CA 91761
United States
Tel: 888-352-3558
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 waterdropfilter.com within 30 days of your purchase, you are eligible to claim a price-match refund. To request a refund, please contact us at service@waterdropfilter.com. We are here to assist you promptly.
Note: This Waterdrop price-change refund policy only applies to items shipped and sold by waterdropfilter.com. If you're buying from a different vendor, you'll need to contact that seller if the price drops.

































Waterdrop Instant Hot Water Dispenser, Reverse Osmosis System, K6
Couldn't load pickup availability
Guaranteed Safe Checkout

-
Key Feature
-
Related Blog
- What Is an Instant Hot Water Dispenser
- Although water is necessary for life, most people don’t take up to the recommended daily intake. Generally, daily water intake for men should be 15 cups and 11 cups for women. Although hydration is essential, some people prefer brewing drinks instead of water.
Shipping rates and delivery estimates
Shipping Method |
Estimated Delivery Time |
Costs |
Economy Shipping |
4-8 Business Days |
Free |
Standard Shipping |
3-6 Business Days |
$5.99 (Free on orders over $200) |
Express Shipping |
2-3 Business Days |
$10.99 (Package Weight: Under 9 lb) |
* Shipping charges for your order will be calculated and displayed at checkout.
* Delivery time is based on the shipping date, not the order date. Please note that actual shipping dates may be delayed due to factors such as invalid shipping addresses, weekends, or holidays.
Handling Time:
We need 24 to 48 hours to prepare your order. Most packages will be shipped within 24 hours, excluding weekends and holidays.
Track your order
Once your order has shipped, you'll receive an email with tracking information. You can also find tracking details on your "Order Details" page.
Shipping origin
The package will be shipped from one of our US warehouses closest to your location.
* If you have any questions, feel free to contact our customer service via LiveChat or email us at service@waterdropfilter.com. We will respond as soon as possible!
Shipping areas
We deliver to most U.S. states. Some products can be shipped to Alaska and Hawaii for an additional shipping fee. However, We currently do not deliver to American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico, and the U.S. Virgin Islands.
International shipping
Unfortunately, we do not support international shipping at this time.
Shipping Carriers
We partner with four carriers—UPS, USPS, FedEx, and Amazon Logistics US—to ensure timely delivery
Note: We cannot accommodate specific carrier requests.
Delivery Time Exceeded
Shipping delays may occur due to weather, natural disasters, carrier issues, or high-risk orders. If your order is delayed, please contact us at service@waterdropfilter.com, and we will check the situation with the transportation company promptly. Thank you for your understanding and support.
Sales Tax
Sales tax will be collected as required by U.S. law for deliveries to the following states: AZ, CA, CO, FL, GA, IL, IN, KY, MA, MD, MI, MN, NC, NJ, NV, NY, OH, PA, TX, UT, VA, WA, WI. Rates are determined by local governments, and all collected taxes will be promptly reported to the IRS.
Thank you for shopping at Waterdrop. We appreciate your decision to purchase our products and aim to ensure a rewarding experience throughout your exploration, evaluation, and purchase process.
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 service@waterdropfilter.com 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.
30-day Risk-free Return Policy:
- You are eligible to return any item* within 30 days of receipt.
- All returned items must be disassembled and repackaged as they were originally received.
- The 30-day risk-free return policy applies to all item*.
- No restocking fee will be charged, but customers are responsible for the return shipping cost. We will cover the return postage expenses in the case of any return requests related to a quality issue.
- Please note that the 30-day risk-free return policy is only valid for orders* within the continental United States.
Return after 30 Days of Receipt:
- You may still return any item after 30 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 to all returned products. However, in the event of any return requests related to a quality issue, we offer free returns or replacement with a new product.
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 service@waterdropfilter.com 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 waterdropfilter.com.
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:
Email: service@waterdropfilter.com
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:
1. Defective Products:
If you receive a product with quality issues or damages, please contact our customer service team. we provide free returns, replacement with a new product, and comprehensive technical support.
2. Non-Quality Issues:
- 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:
Ecolife Technologies, Inc.
1951 S Lynx Pl,
Ontario, CA 91761
United States
Tel: 888-352-3558
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 waterdropfilter.com within 30 days of your purchase, you are eligible to claim a price-match refund. To request a refund, please contact us at service@waterdropfilter.com. We are here to assist you promptly.
Note: This Waterdrop price-change refund policy only applies to items shipped and sold by waterdropfilter.com. If you're buying from a different vendor, you'll need to contact that seller if the price drops.
Recommend for you
Model number
WD-K6-W(Also named as WD-KJ-600)
Product dimensions
18 x 17 x 7 inches
Item weight
33.06 pounds
Maximum daily capacity
600 GPD
Feed water pressure
14.5-87 psi/0.1-0.6MPa
Feed water temperature
41-100°F/5-38°C
Hot water temperature
104-203°F/40-95°C
Faucet
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?
Can the system be connected with a UV water sterilizer?
Can the K6 system be connected to a refrigerator or an ice maker?
Does Waterdrop K6 instant hot Reverse osmosis system waste a lot of water?
How often should I change reverse osmosis instant hot water filters?
Is it convenient to replace the filter of Waterdrop K6 instant hot Reverse osmosis system?
Can this system use my own faucet?
What size hole would I need to drill to install the faucet in my sink?
Is Waterdrop K6 instant hot Reverse osmosis system noisy?
Can I immediately get hot water after setting the temperature?
How do I start the heating function to get hot water after installing the system?
Can I turn off the heating module when heating is not required?
How many modes of heating temperatures can I set?
Is Waterdrop K6 instant hot Reverse osmosis system safe?





















![]() |
![]() G3P800 RO Filtration System |
![]() K6 Instant Hot RO System |
![]() D6 RO Filtration System |
![]() G2P600 RO Filtration System |
![]() K19 Countertop RO System |
|
Need Installation | √ | √ | √ | √ | √ | × |
---|---|---|---|---|---|---|
Flow Rate | 600 GPD | 800 GPD | 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.
|
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Faucet | Smart faucet | Smart faucet | Smart faucet | Smart faucet | Ordinary faucet | / |
Display | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan & TDS & Temperature adjustment | Filter lifespan & TDS | Filter lifespan | Filter lifespan & TDS |
Self-clean | √ | √ | √ | √ | × | √ |
Holiday mode | √ | √ | √ | √ | × | √ |
Electricity Required | √ | √ | √ | √ | √ | √ |
Filter Cartridges |
WD-G3-N1CF WD-G3P600-RO WD-G3-N3CB |
WD-G3-N1CF WD-G3P800-N2RO WD-G3-N3CB |
WD-KJF |
WD-D6RF |
WD-G2CF WD-G2P6MRO |
WD-K19RF |
Filter Lifespan | CF-6 Mths CB-12 Mths RO-24 Mths |
CF-6 Mths CB-12 Mths RO-24 Mths |
12 Mths | 12 Mths | CF-12 Mths P6MRO-24 Mths |
12 Mths |
Dimensions (inch) | 18.11*5.67*17.73 | 18.06*5.65*17.75 | 6.7*17.5*16.6 | 15.98*5.98*11.97 | 17.32*5.91*13.9 | 13.8*7.9*16.3 |

- Adaptive to Waterdrop K6-W&KJ-600 Instant Hot RO System provides up to 12 months or 1,600 gallons of healthy water for you and your family.

- An excellent add-on Remineralization filter adopts 18 natural materials to restore minerals.
- Saves 8300 single-used bottles and $12600 spent on bottled mineral water.
- Compatible with RO water system, undersink filtration systems and refrigerator.