$70 Off
T4-A with Replacement Filter Bundle
T4-A with Replacement Filter Bundle
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T4-A with Replacement Filter Bundle

$345.95 $415.95 $70 Off

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The Waterdrop WD-T4-A-SET combines the T4-A with a replacement filter bundle in one convenient package.

  • Complete Bundle: Includes the Waterdrop T4-A and a replacement filter bundle.

Fast, Free Shipping

30-Day Price Protection

30-Day Worry-Free Returns

1-Year Warranty

24/7 Customer Support

Services and Benefits

Enjoy swift doorstep delivery with every order at no extra cost. Our efficient logistics network ensures your purchases reach you quickly and reliably, so you can start using your new products without delay or hidden fees. Experience convenience that truly moves at your speed.

Enjoy worry-free shopping with our 30-day price protection. If the price drops within 30 days of your purchase, contact us and we’ll refund the difference according to our policy, helping you shop with greater confidence and value.

Shop with complete confidence knowing you have a full month to decide. If you're not satisfied for any reason, our straightforward return process makes it easy to send items back for a prompt refund or exchange—no complicated steps or hassles involved.

Your purchase is protected by an extensive one-year warranty covering manufacturing defects. This long-term commitment guarantees peace of mind and reflects our trust in the durability and quality of the products we offer to you.

Our dedicated support team is available around the clock, every day of the year. Whenever you need assistance, get immediate help via live chat, email, or phone for any questions, ensuring a smooth and supported experience whenever you reach out.

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In Stock—Estimated delivery in 3-5 business days.
$345.95
$415.95 $70 Off
T4-A with Replacement Filter Bundle
T4-A with Replacement Filter Bundle
  • Overview
  • Specs
  • Compare
  • Reviews
  • FAQs
  • Replacements
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Upgrade Filtration: Go Healthier

Ultimate Upgrade of RO System

Enjoy better-tasting & instant pure water and user-friendly designs from now!

  • Get Better-Tasting
  • Instant Pure Water
  • Save More Space
  • All-In-One Cartridge

Dual-Flow Alkaline RO System

Enjoy clean RO water for safe drinking and alkaline water that helps balance body, improve digestion, and keep you hydrated — all in one system.

  • 10-Stage Filtration With Added Minerals
  • Quick Freshness, Enjoy Right Away
  • Effortless Strong Flow To Your Ice Maker & Fridge
Dual Flow, Dual LED Function — Always Safe Drinking

Dual Flow, Dual LED Function — Always Safe Drinking

You're covered on every sip — Waterdrop's dual-flow RO system gives you double protection, with LED Function built into each line.

Auto-Flush RO System, Smarter & Fresher

Auto-Flush RO System, Smarter & Fresher

Waterdrop WD-T4-A keeps your water fresh at all times, ensuring a consistently great taste.

2:1 Pure to Drain, Saves 800% Water

2:1 Pure to Drain, Saves 800% Water

Waterdrop T4-A — your choice for water & environmental savings

  • Certification

    NSF/ANSI 372 Certified

    Reduced substances

    TDS, PFOA, PFOS, Chlorine, Fluoride, Barium, Salt, Chromium-VI, Lead, Heavy metals, Bad taste & odor and More Impurities *Tested by a third-party laboratory.

    View the Report
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T4-A
Specification
T4-A
Model
T4-A
Pure to Drain
2:1
Product Dimensions (In)
16.54*6.22*17.95
Product Weight (Ib)
24.25 pounds
Certification
NSF/ANSI 372 Certified
Filtration
10-stage Filtration
Capacity
450GPD
Faucet

Smart Faucet

Usage
Indoor use only
Electricity Required
Yes

In The Box (16)

  • T4-A Main Unit x1

    T4-A Main Unit

  • T4-A Filters x1

    T4-A Filters

  • Faucet x1

    Faucet

  • Power Adapter x1

    Power Adapter

  • Red 1/4" PE tubing x1

    Red 1/4" PE tubing

  • Blue 1/4" PE tubing x1

    Blue 1/4" PE tubing

  • Feed water adapter x1

    Feed water adapter

  • Drain saddle x1

    Drain saddle

  • Reference sticker x1

    Reference sticker

  • Teflon tape x1

    Teflon tape

  • Lock clips x6

    Lock clips

Compare  

T Series

Compare
T Series

Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System

T4-A

$259.99
$329.99 $70 off
Waterdrop T3-M 450G Remineralization RO Under the Sink Water Filter

T3-M

$219.99
$279.99 $60 off
Waterdrop T3-C 450G Reverse Osmosis Water Filters for the Sink

T3-C

$209.99
$279.99 $70 off
Flow Rate
Flow Rate 450GPD 450GPD 450GPD
Alkaline Mineralization
Alkaline Mineralization √ √ ×
Pure to Drain
Pure to Drain 2:1 2:1 2:1
Faucet
Faucet

Smart Faucet

Mechanical Faucet

Mechanical Faucet

Warranty
Warranty 1 Year 1 Year 1 Year
Certification
Certification NSF/ANSI 372 Certified NSF/ANSI 372 Certified NSF/ANSI 372 Certified
Product Dimensions (In)
Product Dimensions (In) 16.54*6.22*17.95 13.39*6.22*17.95 13.39*6.22*17.95
Product Weight (Ib)
Product Weight (Ib) 24.25 pounds 20.1 pounds 19.12 pounds

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FAQ

Curious about how the RO filter works? Our FAQ section covers everything from filter lifespan to installation tips for clean, pure water every day.

Contact Us

How does the dual-flow feature benefit me?

You can switch instantly between standard RO-purified water for everyday drinking and an alkaline stream that adds beneficial minerals, perfect for coffee, tea, or anyone who prefers a smoother taste profile.

Does the system keep water hygienic after filtration?

Yes. Each water line has its own UV LED sterilizer that continuously disinfects the water as it leaves the filter, safeguarding freshness all the way to the faucet.

Does it require a storage tank?

No. The compact, tankless design prevents secondary contamination and frees up about 70 % more under-sink space compared with tank-based RO systems.

Is installation complicated?

No! The tank-free design make under-sink installation straightforward for most homeowners — no bulky tank to position or maintain.

Will the alkaline stream affect beverage flavor?

Yes — positively. The mineral-enhanced line can improve the taste and aroma of coffee, tea, and cooking water while still delivering contaminant-reduced purity.

Learn More About T4A & Water Filtration

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