Waterdrop Replacement for Filtrete Advanced 3US-PF01 Under Sink Water Filter

Regular price $19.99
Sale price $19.99 Regular price
1 Pack - $19.99
2 Pack - $37.99 ($18.99 each)
3 Pack - $53.99 ($17.99 each)
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  • Key Feature
    • Filtrete filters 3US-PF01 replacement adopts advanced coconut carbon shell that can reduce 98% of chlorine, sand, sediments, taste and odor.
    • Food-grade plastic housing ensures you pure water.
    • Only need to change the filter every 6 months or 2,000 gallons of filtered water.
    • Easy installation with no tools required.
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Shipping policy

Shipping rates and delivery estimates

Shipping Method

Estimated Delivery Time


Economy Shipping

4-10 Business Days


Standard Shipping

3-6 Business Days

$5.99(Free on order over $200)

Express Shipping

2-5 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 of states in United States except American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico and U.S. Virgin Islands.

International shipping

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

Shipping Carriers

We work with 4 carriers to make sure your order will arrive on time: UPS, USPS, FedEx and Amazon Logistics US.

Delivery Time Exceeded

Shipping might experience delay due to covid-19. If your order is delayed, please contact us via email, we will check the situation with the transportation company in time. Thanks for your understanding and support.

Note: We don't accept requests to specify a certain carrier to deliver the package.

Shipping origin

The package will be shipped from one of our US warehouses closest to your location.

* If you have any questions, you can contact our customer via LiveChat or email to, we will reply to you as soon as possible!

Sales Tax

The sales tax will be collected in accordance with U.S. tax laws. Customers whose delivery address within the following states will be charged a certain tax at checkout, and the tax rate is determined by the local government. (AZ, CA, CO, FL, GA, IL, IN, KY, MA, MD, MI, MN, NC, NJ, NV, NY, OH, PA, TX, UT, VA, WA, WI) All taxes collected will be reported and filed to the IRS on time.

30-Day Return ×
No Worries Guarantee

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.


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

If you contact us within 24 hours of purchase:

We can cancel the order for you at no additional cost. The cancellation may take up to 3 days, thank you for your patience and understanding.

If the package is already shipped, we will issue a prepaid label and return your payment after we have received the package from you.

If you contact us after 24 hours of purchase:

You need to bear the return fee if the package is already shipped (depends on our system, not the order status).

The product has to be damage-free, packed in the packaging we sent to you, and with the original receipt of the purchase.

We will return your payment after we have received the package from you.

There are times when we may not have the product(s) that you choose in-stock or may face some issues with our inventory and quality check. In such cases, we may have to cancel your order. You will be intimated about it in advance so that you do not have to worry unnecessarily about your order.

Return Policy

We accept return reasons including defective, no longer needed, change mind, not as described, etc.

If you want to return the item without any quality issue, you need to bear the return fee yourself and pay 20% of the original order as a restocking fee. We will cover the return postage for return requests regarding quality issue.

Once you received a damaged / incorrect item and you want to file a claim, please email

together with your order information and the picture of the damaged / incorrect product. We are eager to help.

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

Step 1: contact the customer service team before return a product, we will reply you with return tips within 24 hours.

How to contact:


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

Step 2: prepare package after you get confirmation from customer service team, please be noted the following requirements:

• The order number needs to be included in the package. You can print out the order detail page or leave a note in the package.

• The package needs to come back with the original receipt of the purchase.

• The product has to be in the packaging we sent in the first place.

• The product has to be damage-free (not applicable for defective products), damage on the product will void the refund.

Step 3: Please contact our customer service and send your return tracking number. We will track the package, and refund your money within 5 working days after we receive and check the package .

Return Window

We offer a 30-day return guarantee. Warranty will begin from the date the product is received. If a product grows defective during the warranty period due to a quality issue rather than your own breakage or misuse, we can accept a return, provide free repair service, or issue a new replacement.

Return address:

Ecolife Technologies, Inc.

17910 Ajax Circle

City of Industry, CA 91748

United States

Tel: 888-352-3558

Refund Policy

After receiving your request or your packages, it may take up 1-7 business days to refund your money. (Unfortunately, due to current situations and the COVID-19, your refund may require an additional 3-5 days to process. Thank you for your patience and understanding.)

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33-100 °F / 0.6-38 °C
Filter capacity:
 2,000 gallons (7570 liters) / 6 months
The Waterdrop WD-3US-PF01 replacement is compatible with following model numbers:

3M Filtrete

3US-PF01, 3US-MAX-F01, 3US-PF01H, 3US-MAX-F01H


*The following claims have not been tested and certified by NSF: compatibility claims.
The above statement is in accordance with the NSF General Policy 25. Please note the certification information is only applicable to Waterdrop, not representing other brands on this page.

**The above brands do not source or sponsor the water filter. The manufacturers' names and model numbers have been used for reference purposes only.
The manufacturer is Hong Kong Ecoaqua Co., Limited. Made in P.R.C

Filtration performance with Waterdrop filters 3US-PF01 replacement.
Activated carbon filtration, usually in the form of high-performance carbon block filters, is the cornerstone of most undersink water filter system. Waterdrop 3US-PF01 replacement adopts the premium carbon materials from Sri Lankan coconut shell, which achieves a superior reduction performance. With our high-quality filter, it helps reduce chlorine, bad taste, odor, heavy metals, and more harmful elements, aiming to provide you fresh and healthy drinking water.
How does under sink water filter work?
Conventional under sink filter: It receives water from the undersink cold water pipe and water flows from a flexible plastic tube to the water filter. And the water will be delivered to the user through the filter's own special faucet, installed on top of the sink. The system is under constant pressure so that when the user opens the filter's faucet, the sink water will flow through the filter and out the faucet.
Simple under sink filter: In this arrangement, the cold-water is diverted through the filter and filtered water is dispensed through the regular cold-water sink faucet. Besides, the hot water won’t be filtered. The simple under sink filter without a separate is becoming more popular and more practical with the advent of flexible rather than hard copper under sink piping. Flexible delivery pipes make the undersink water filter installation simple and affordable.

Are under sink water filters any good?

It’s more efficient than ever. With only 3 seconds to change a new one without any professional help, you can enjoy fresh and healthy water. What’s more, the advanced under sink water filter 3US-PF01 replacement is quite cost-effective with long-lasting service life, changing twice a year with Waterdrop. Undersink water filter system ensures to reduce chlorine, bad taste, odor, and many other harmful substances.

Is this a replacement filter for 4US-MAXS-S01?

This filtrete 3US-PF01 filter replacement is designed to suit 3US-AS01, 3US-PS01, and 3US-MAX-S01 systems.

How long do WD-3US-PF01 under sink water filters last?

Our R&D is dedicating to technology investment. Waterdrop filters 3US-PF01 replacement can last 6 months or 2,000 gallons of filtered water, whichever comes first will vary based on water condition. It helps to cut down your budget shopping expensive bottled waters and also protects the environment.

What could this 3US-PF01 remove?

This undersink water filter uses premium materials including advanced ion exchange resin and superior granular activated carbon for effective reduction of potentially harmful elements.

Is there a difference between the 3US-PF01 and the 3US-PF01H? Will the PF01 fit the base that is 3US-PS01H?

No there isn't a difference, they're the same filter so that PF01 will fit the PS01H base.

Is WD-3US-AF01 the same as WD-3US-PF01?

Please confirm the filter you need. These two are entirely different under sink water filters. Please purchase after checking and confirming the filter appearance and model number.
Waterdrop Countertop Reverse Osmosis System
Efficient filtration
Our advanced under sink water filtration filter can reduce chlorine and other harmful substances, serving you fresh and crisp drinking water.
Supreme materials
  • The under sink water purifier adopts coconut shell carbon block from Sri Lanka absorbing chlorine and unpleasant tasting.
  • The filter uses food-grade plastic housing to prevent impurities from leaching back to your water.
Premiun material
Perfect fit your original brand
WD-3US-PF01 replacement is designed to fit your original brand. If there is any question, please feel free to contact our professional service team.
Stable & fast water flow
The under counter water filter can produce water quickly with stable and rapid low, thereby meeting the needs of your whole family and even small companies.