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6 Fastest Toilet Fill Valves of 2024

By Eugene WilliamsLast update: 2024-04-18

Do you find your toilet tank is refilled too slowly after each flush? Well, it’s time to replace the valve. We have tested hundreds of options on the market for the fastest toilet fill valve, so this roundup list might be helpful to you. Read on!

Here are the fastest toilet fill valves you can buy in 2024:

  • Water-Saving: Fluidmaster 400H-002-P10
  • Long-Lasting: Kohler GP1083167
  • Best For Dual Flush Toilets: TOTO TSU99A.X
  • Quiet: Korky 528MP
  • Easy To Install: Danco HC660
  • Floatless Fill Valve: Fluidmaster 703AP4
6 Fastest Toilet Fill Valves
Fluidmaster 400H-002-P10
    Kohler GP1083167
      Best For Dual Flush Toilets
      TOTO TSU99A.X
        Korky 528MP
          Easy To Install
          Danco HC660
            Floatless Fill Valve
            Fluidmaster 703AP4

              Water-Saving: Fluidmaster 400H-002-P10

              Fluidmaster 400H-002-P10
              Fluidmaster 400H-002-P10
              • Water-saving – water level adjustment dials
              • Versatile – fitting most toilet brands and models
              • The level adjustment could be sturdier

              The Fluidmaster 400H-002-P10 is a fantastic replacement to your old toilet fill valve. It fills a standard toilet tank twice as fast as the traditional (45 seconds versus 3 minutes), without making a noise.

              But the best part is you can adjust this toilet fill valve to save on water usage per flush.

              The 400H-002-P10 is preset to fit any standard toilet brand and model plus the installation directions are understandable.

              Fluidmaster 400H-002-P10 Specifications


              3.35 x 4.33 x 13.19 inches



              Highlight Features

              water level adjustment dials

              fitting most toilet brands and models


              The Fluidmaster 400H-002-P10 allows users to adjust the amount of water per flush, making it the best water-saving option.

              Long-Lasting: Kohler GP1083167

              Kohler GP1083167
              Kohler GP1083167
              • Long-lasting – durable build & made by a renowned manufacturer
              • Flexible – adjustable height
              • A high upfront cost

              If you're seeking a toilet fill valve that's built to last, then add the Kohler GP1083167 to your shopping cart. Products from Kohler have been long renowned for durability and top-notch quality, and this lineup is no exception.

              Designed by Kohler engineers, the GP1083167 inherits the decent performance of the original product while lasting longer. Many customers report that their Kohler valve lasts 7-10 years.

              Besides, this model is height adjustable to fit more toilet sizes and models with leak-free.

              Kohler GP1083167 Specifications


              11.75 x 3.75 x 3 inches



              Highlight Features

              durable build & made by a renowned manufacturer

              adjustable height


              Made by a renowned brand and with high-end materials, the Kohler GP1083167 is long-lasting, and you can expect it to last for years

              Best For Dual Flush Toilets: TOTO TSU99A.X

              TOTO TSU99A.X
              TOTO TSU99A.X
              • Suitable for TOTO dual flush toilets
              • Convenient – including all installation accessories
              • A bit pricey

              If you have a TOTO dual-flush toilet and it's time to replace the fill valve, we highly recommend the TSU99A.X.

              This model is specifically designed to fit seamlessly to all the brand's toilet lineups and make it back to the optimal performance.

              Everything required for the installation is included in the package, including nuts, cone washer, clamp, and refill tube and clamp. So, one with some technical experience can install it at home without hiring a licensed plumber.

              Please note that this toilet fill valve matches with a 7/8" inlet connection.

              TOTO TSU99A.X Specifications


              10.25 x 4 x 2.25 inches



              Height Adjustment Range

              7-3/4” to 13-1/2”

              Highlight Features

              Suitable for TOTO dual flush toilets

              including all installation accessories


              For those who have a TOTO dual flush toilet and are seeking a fill valve replacement, nothing is better than the TOTO TSU99A.X

              Quiet: Korky 528MP

              Korky 528MP
              Korky 528MP
              • Super-quiet - quiet mechanism
              • Reliable – made in the US
              • The most budget-friendly option
              • Noisy
              • Not easy to install

              In need of a fast yet quiet toilet fill valve for your ensuite to not wake up anybody at midnight? Then, don't miss out on the Korky 528MP.

              Unlike other brands we tested, this one has an extremely quiet mechanism and emits little flushing sound.

              According to the manufacturer's recommendation, this model has worked well with toilets since 1994 (with 1.6 GPF or lower).

              Above all, it's made in Wisconsin, US - which ensures the quality.

              Korky 528MP Specifications


              3.25 x 5.5 x 14 inches



              Height Adjustment Range

              7.75'' to 13.5''

              Highlight Features

              quiet mechanism

              made in the US


              The Korky 528MP pleasantly surprised us for its extremely quiet performance.

              Easy To Install: Danco HC660

              Danco HC660
              Danco HC660
              • Easy to install - Smart Nut
              • Able to detect leakage - water-leakage detection ability with sound alert
              • Keep the toilet tank clean - powerful water jets
              • Not so quiet

              For those who already have some experience on plumbing installation and want to save hundreds of bucks on hiring a licensed plumber to replace your toilet fill valve, our favorite pick is the Danco HC660.

              It has an exclusive feature called Smart Nut, which is for quick, tool-free installation.

              We also appreciate its water-leakage detect sensor with sound alert, which is super-handy in addressing any potential problems.

              The powerful water jets are a big plus, too. They help remove any debris in the toilet tank, keeping it from clogging.

              Danco HC660 Specifications


              10.5 x 3 x 3 inches


              Acetal, Polypropylene

              Height Adjustment Range

              11 inches to 13.8 inches

              Highlight Features

              Smart Nut

              water-leakage detection ability with sound alert

              powerful water jets


              If you are looking for an easy-to-install toilet fill valve, then our recommendation is the Danco HC660

              Floatless Fill Valve: Fluidmaster 703AP4

              Fluidmaster 703AP4
              Fluidmaster 703AP4
              • Best for Glacier Bay and Niagara Flapperless toilet lineups
              • Durable - Corrosion-resistant material
              • The cap fitting over the top of the inlet port needs improvement

              The Fluidmaster 703AP4 is the best floatless fill valve at a reasonable price that we've ever found.

              It's surprisingly easier to set up, works better than a standard float system, and resists corrosion to last longer. Plus, it optimizes the refill speed to restore the factory performance of your toilet.

              Note: this model is compatible with Glacier Bay and Niagara Flapperless toilets.

              Fluidmaster 703AP4 Specifications


              11.88 x 2.6 x 2.88 inches



              Highlight Features

              Best for Glacier Bay and Niagara Flapperless toilet lineups

              Corrosion-resistant material


              On the hunt for the fastest floatless fill valve? Then, don’t hesitate to pick the Fluidmaster 703AP4

              How To Choose The Fastest Toilet Fill Valve?

              Type Of Toilet Fill Valve

              If you're looking for a new fill valve for your toilet, you may be wondering whether to choose a float cup fill valve or a floatless fill valve.

              Both types of valves have their own advantages and disadvantages, so it's important to choose the right one for your needs.

              Float cup fill valves are the most common type of fill valve. They are simple to install and usually very affordable. However, they can be prone to leaks and may require adjustment from time to time.

              Floatless fill valves are newer technology and are becoming more popular. They tend to be more expensive than float cup valves, but they are less likely to leak and usually don't require any adjustment.

              Refill Speed

              Toilet water refill time is one of the key factors to consider when choosing a toilet fill valve.

              A fast-filling valve will minimize the amount of time you spend waiting for your tank to refill, and it can also help reduce water waste.

              There are a few things to keep in mind when considering toilet water refill time.

              First, the faster the fill rate, the more water you'll use. If you're trying to conserve water, a slower fill rate may be a better option.

              Second, consider the size of your toilet tank. A larger tank will take longer to refill than a smaller one.

              Think about your typical usage patterns. If you only use your toilet a few times per day, you may not need a valve that fills particularly quickly.

              Choosing the best fastest toilet fill valve is a matter of trade-offs. Consider your needs and find the valve that offers the perfect balance of speed and efficiency for your home.


              Toilet fill valves are made from a variety of materials, but the most common are brass, plastic, and stainless steel. Each material has its own advantages and disadvantages.

              • Brass is the most durable option, but it is also the most expensive.
              • Plastic is the least expensive option, but it is also the least durable.
              • Stainless steel is somewhere in between, offering good durability at a reasonable price.

              When it comes to longevity, brass and stainless steel are the clear winners. Both materials can last for many years with proper care and maintenance.

              Plastic, on the other hand, has a shorter lifespan and is more likely to break or leak over time.

              So, which material is right for you? It depends on your budget and your needs.

              If you want a durable toilet fill valve that will last for years to come, brass or stainless steel is the way to go. If you're on a tight budget, plastic may be the best option.

              Which Brands Make The Fastest Toilet Fill Valve?


              With over 100 million products sold every year, Fluidmaster is the world's leading manufacturer of toilet parts and accessories. They're so popular that 90% of new toilets sold have a Fluidmaster fill valve set up in it. They offer top-notch products with an industry-leading warranty.


              Kohler Co. is a Wisconsin-based company founded in 1873 by John Michael Kohler. They produce a wide range of plumbing products, furniture, cabinetry, and toilet fill valves.

              They are known for their innovative designs and commitment to sustainability. Kohler has been one of the most dependable companies for over 100 years and continues to set the standard for quality and innovation in the industry.


              Founded in 1917, Toto is a popular Japanese multinational manufacturer of toilets and relevant products. TOTO products are known for their quality, durability, and performance. They offer a wide variety of styles and designs to suit any bathroom décor.


              Do you need a specific fill valve for the toilet?

              Yes, you need.

              There are some different fill valve types for toilets, so you should determine the right one for yours.

              Are all toilet water valves the same?

              No, they aren't.

              The size range of toilet fill valves are from 2

              When should I replace my toilet fill valve?

              You should replace your toilet fill valve when:

              • You cannot find the right valve and float adjustments to make the water stay off
              • You hear muted screams when flushing the toilet
              • The water does not shut off

              How do I get my toilet to fill up faster?

              Here are solutions to get your toilet to fill up faster:

              • Switch to a faster toilet fill valve
              • Turn the fill valve adjustment knob (try this for new toilet designs)
              • Loosen the adjustment screw using a flathead screwdriver and lift the fill valve (try this for old toilet designs)

              How fast should a toilet tank refill?

              Depending on the size of the toilet tank, the refill time could range from 30 seconds to 5 minutes.


              It’s never fun to have a toilet tank that takes too long to refill. We hope that this review list helps you find the fastest toilet fill valve that fits your needs and budget. For more informative articles, please visit our blog. Thanks for reading!

              Hi, my name is Eugene, the ultimate home enthusiast! I write buying guides and ideas on how to create a warm and welcoming home. Join me on my journey to make everyday in your house a staycation in the comfort of your own space!

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