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Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install

4.6 4.6 out of 5 stars 11,563 ratings

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Universal Fit for HET 1.28 gal
Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve
Material Plastic
Brand Fluidmaster
Item Dimensions LxWxH 3.13 x 4.38 x 12.5 inches

About this item

  • Size: Universal Fit for HET 1.28 gal.ENHANCES YOUR TOILET’S POWER: Toilet fill valve replaces old, inefficient valves and eliminates noise while generating 2X greater refill rates than standard fill valve designs
  • UNIVERSAL DESIGN: Fill valve adjusts easily from 10 – 15 inches and is ideal for use in high efficiency 1.28 to 1.6 gallons per flush toilets
  • ADJUSTABLE ROLLER CLAMP: Water-saving roller clamp lets you regulate the fill level in the bowl to help save water and money
  • EASY INSTALLATION: Easily installs in 10 minutes or less to get your toilet flushing like new again

Customer ratings by feature

Easy to install
4.7 4.7
Instruction quality
4.5 4.5
Value for money
4.4 4.4
Noise level
4.1 4.1

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Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install
Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install
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Price$37.69$32.00$18.99$15.97$16.98
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to install
4.7
4.9
4.7
4.6
4.9
4.8
Instruction quality
4.5
4.5
4.6
4.1
4.7
4.6
Noise level
4.1
4.5
4.4
4.4
4.3
Value for money
4.4
4.5
4.5
4.4
Longevity
4.1
5.0
4.1
Sold By
The Tech Expert
Amazon.com
R&T Technology Co. Ltd
Amazon.com
Amazon.com
material
Plastic
Plastic
Polybutylene Terephtalate (PBT)
Plastic, Rubber, Resin
Plastic
inlet type
Fill
Fill
Fill

From the manufacturer

PerforMAX

High Performance Toilet Valve

Maximize toilet performance and save water.

Quietest and most powerful fill valve on the market

Works with all toilets, including Kohler, Toto and American Standard.

2X greater refill rate than standard fill valves

Avoids excessive or inadequate bowl fill levels.

Universal fit, perfect for:

  • High efficiency toilets (HET 1.28 gal.)
  • Dual Flush including DUO FLUSH
  • 1.6 gallon toilets with 2" and 3" flush valves (1994 & newer)
  • Older high gallon toilets with 2" Flush valve (1994 & older)

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Product information

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Fluidmaster

Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve, Easy Install


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Product Description

Product Description

Designed to replace old, leaky, slow filling valves, the Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve is the most powerful toilet fill valve on the market (*also known as the 400ARHR). With quick and easy installation, this fill valve design eliminates noise while generating 2X greater refill rates than standard fill valve designs. A universal toilet repair part that fits most toilet models, the fill valve features a height adjustable valve shank design to adjust between 10 – 15 inches. Built to last, this replacement toilet fill valve features quality construction and a water-saving roller clamp to help save water and money by optimizing your toilet’s water usage. Best for use with high efficiency 1.28 and 1.6 gallons per flush toilets (including dual flush) and can be used with pre-1994 3.5 gallons per flush toilets. Combine with a Fluidmaster toilet flapper or flush valve for complete fill and flush optimization..

From the Manufacturer

The Fluidmaster 400AH PerforMAX Toilet Fill Valve sets the high performance standard. Designed to replace old and leaky fill valves the PerforMAX fill valve is the most powerful toilet fill valve on the market (*Also known as the 400ARHR). With quick and easy installation this fill valve design eliminates noise, while generating 2X greater refill rates than standard fill valve designs. A universal toilet repair part that fits most toilet models, with a height adjustable valve shank design. Best with 1.28 HET and 1.6 GPF toilets, including dual flush and can use with pre-1994 3.5 GPF. The water-saving roller clamp helps save water and money by optimizing your toilets water usage. Built to last this replacement toilet fill valve features quality construction with a 7 year warranty. Combine with a Fluidmaster toilet flapper, or flush valve for complete fill and flush optimization. PerforMAX the top solution for enhancing your toilets power, and eliminating noise.

Product guides and documents

Customer reviews

4.6 out of 5 stars
4.6 out of 5
11,563 global ratings

Customers say

Customers like the ease of installation and performance of the valve. They mention that the instructions are easy to read and follow. Some are happy with the value, size, and adjustability. That said, some disagree on quality, noise, and filling speed.

AI-generated from the text of customer reviews

733 customers mention713 positive20 negative

Customers find the installation of the valve to be extremely easy. They mention that the instructions are easy to read and follow, and the rest of the process is straightforward and quick. The instructions are expanded over the 400A's to include using with 3" and Duo, and quick simple adjustments are clearly spelled out.

"...Installation was a breeze. Turn off water, flush, and disconnect the water line...." Read more

"...brands over the years and have always come back to these for simplicity of installation and quality of workmanship...." Read more

"...It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect"." Read more

"...The instructions are expanded over the 400A's to include using with 3" and Duo Flush valves in addition to the more traditional 2" valve...." Read more

637 customers mention591 positive46 negative

Customers are satisfied with the performance of the valve. They mention that it works well, it was easy to install, and it works perfectly from minute 1. Some say that the unit is great and quiet. Overall, most are happy with their purchase and recommend it to others.

"...Now there's no running and they're all nice and quiet.Pro-tip: Make sure you don't also need a flapper to go along with the valve...." Read more

"...It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect"." Read more

"replced old unit and works fine." Read more

"...Fluidmaster PerforMax and in a short 30 min or less, a perfectly working toilet again...." Read more

145 customers mention126 positive19 negative

Customers like the value of the valve. They say it is a great money saver and a lifesaver. They also say it's much cheaper than calling a plumber and easy to install. Customers also mention that it refills correctly, thereby cutting down on their water utility bill.

"...them out (instructions for doing this are in the box) but they are so inexpensive and easy to install it is usually just as easy to replace it...." Read more

"...Good quality and value is a plus. So far so good and I definitely would recommend." Read more

"...It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect"." Read more

"...I use these on my home as well as my rentals. Cheaper than chain stores and delivered to your door. These will fail eventually but that's fine...." Read more

87 customers mention73 positive14 negative

Customers like the size of the valve. For example, they say it fits perfectly in their American Standard toilet, is simple to replace, and easy to adjust. Some mention that the fully adjustable height is great for any size toilet tank and that they could set it up to their needs.

"...on your water conditions and they are simple to replace and easy to adjust...." Read more

"Perfect fit and flow but it's louder than expected. Good quality and value is a plus. So far so good and I definitely would recommend." Read more

"Perfect fit." Read more

"...They were easy to install and to adjust, but a month ago one started making a loud groaning sound which could be heard all over our house...." Read more

80 customers mention68 positive12 negative

Customers like the adjustability of the valve. For example, they mention it's simple to install, easy to adjust the water levels, and useful. Some appreciate the adjustable flow regulater and the ability to adjust water level and filling pressure. That said, most are happy with their purchase and recommend it to others.

"...The main benefit of this valve is you can adjust the amount of water that goes into the overflow pipe...." Read more

"...all toilets (especially ones made after 1994), with adjustable water level and filling pressure, dual or single flush :)..." Read more

"...The vertical adjustment is good enough and it's easy, but I couldn't really dial it all the way up which is really important on new, low-flow..." Read more

"...fills faster than the shot model it replaced and you can regulate over filling of the bowl (wastes water as the bowl drains to maintain its level)..." Read more

317 customers mention211 positive106 negative

Customers are mixed about the quality of the valve. Some mention it's very high quality at great price, while others say it'll prematurely fail. The hardware and gasket feel decent, and it'd be a good replacement for a whistling toilet. However, some customers say it was from a bad batch or this is not a quality product, and had a premature failure. The plastic just doesn't hold up and eventually the device can't holds the water.

"...or as many as 7 depending on your water conditions and they are simple to replace and easy to adjust...." Read more

"Perfect fit and flow but it's louder than expected. Good quality and value is a plus. So far so good and I definitely would recommend." Read more

"Oddly enough, I had the toilet fill valve go bad in ALL three of my toilets in about a 3-month period...." Read more

"...It's well designed, inexpensive, easy to install, works great, and saves water. I might even call it "perfect"." Read more

309 customers mention147 positive162 negative

Customers are mixed about the noise of the valve. Some mention that it's super quiet, while others say that it is loud.

"...Now there's no running and they're all nice and quiet.Pro-tip: Make sure you don't also need a flapper to go along with the valve...." Read more

"Perfect fit and flow but it's louder than expected. Good quality and value is a plus. So far so good and I definitely would recommend." Read more

"...Though not overly noisy, it doesn't sound noticeably quieter than other fill valves...." Read more

"...Maybe it's a 1 off issue? I have no clue but yes it is VERY loud when refilling. Also it refills the tank like a rocket which is cool...." Read more

200 customers mention92 positive108 negative

Customers are mixed about the filling speed of the valve. Some mention that it works great, fills fast, and seamlessly, without prolonging or annoying sound. However, others say that it's very loud and kind of slow to fill the tank. However some customers say that the rubber inside the column is slowing down the water flow too much.

"...However, I noticed that it took a long time to fill the tank after flushing...." Read more

"...Fortunately, it won't take long to do this, because the tank refills so fast!..." Read more

"...Should last another 5 years. The only problem is it seems to fill up slower than my old one...." Read more

"...This one does seem to fill a bit more quickly and slightly quieter than the replaced unit, hower the replaced one may have been a bit clogged...." Read more

If You Are Using Anything Else You Are Not Using The Best, Easy To Install And Inexpensive  UPDATE: Jul 10 2018
5 Stars
If You Are Using Anything Else You Are Not Using The Best, Easy To Install And Inexpensive UPDATE: Jul 10 2018
UPDATE 10 July: Well I just bought another one to replace one I had for several years in my guest bathroom, the amount of rust looking silt at the bottom on a tank of "clean" water takes away any wonder why they don't last forever (and why I drink filtered/bottled water). The installation was simple as always and trouble free. I have learned over the years that putting on some work gloves and tightening the large plastic nut at the connection next to the tank results in less problems because with gloves you can tighten it very snugly without over-tightening it as you can with a wrench (which can actually cause a leak). The end attached to the water supply obviously does required a wrench but again, don't overdo it.What is there to say, basically you use Fluidmaster or you live to regret it. These things are not programmed to wear out in a few years but chemicals and mineral deposits and such make them last about a minimum of 3-5 years or as many as 7 depending on your water conditions and they are simple to replace and easy to adjust. I tried a few other brands over the years and have always come back to these for simplicity of installation and quality of workmanship.Once they start going bad you can solve some problems by flushing them out (instructions for doing this are in the box) but they are so inexpensive and easy to install it is usually just as easy to replace it.Pretty much finished trying other brands so this is what I buy every time and I keep 1 in my closet for emergencies and replace it when I have to use it. Always have one on hand these days.NOTE/WARNING: Almost all of the problems I have read about in other reviews come down to 3 things because after 26 years, 2 houses and 6 toilets these things do NOT fail in less than 3-5 years (time depending on your water and a variety of random things):Make SURE your float arm or the arm attached to your handle is not binding on anything when you put the cover onIf they have been working on water lines in your area, chances are that some trash has been sent down the line that can stop/slow this valve (the flushing procedure is in the box that may help this)Using almost ANY "drop in" type cleaner will shorten the life of this or any other flush valve, don't use them!There have been people asking why this one and not the 400A, I have attached a chart to show what you are paying for with those few dollarsNOTE: If you wish to reduce your chances of a leak, turn your water off for the house and not the supply line at the toilet. These valves have been sitting there usually for years and when you turn the water off and then back on many times they WILL leak at least for a few hours or more, if you turn the water supply off outside you will avoid this possible problem. If the toilet water supply valve has been used in the recent past without problem this can be ignored.
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Top reviews from the United States

Reviewed in the United States on February 13, 2020
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
3 people found this helpful
Report
Reviewed in the United States on April 18, 2018
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
Customer image
5.0 out of 5 stars If You Are Using Anything Else You Are Not Using The Best, Easy To Install And Inexpensive UPDATE: Jul 10 2018
Reviewed in the United States on April 18, 2018
UPDATE 10 July: Well I just bought another one to replace one I had for several years in my guest bathroom, the amount of rust looking silt at the bottom on a tank of "clean" water takes away any wonder why they don't last forever (and why I drink filtered/bottled water). The installation was simple as always and trouble free. I have learned over the years that putting on some work gloves and tightening the large plastic nut at the connection next to the tank results in less problems because with gloves you can tighten it very snugly without over-tightening it as you can with a wrench (which can actually cause a leak). The end attached to the water supply obviously does required a wrench but again, don't overdo it.

What is there to say, basically you use Fluidmaster or you live to regret it. These things are not programmed to wear out in a few years but chemicals and mineral deposits and such make them last about a minimum of 3-5 years or as many as 7 depending on your water conditions and they are simple to replace and easy to adjust. I tried a few other brands over the years and have always come back to these for simplicity of installation and quality of workmanship.

Once they start going bad you can solve some problems by flushing them out (instructions for doing this are in the box) but they are so inexpensive and easy to install it is usually just as easy to replace it.

Pretty much finished trying other brands so this is what I buy every time and I keep 1 in my closet for emergencies and replace it when I have to use it. Always have one on hand these days.

NOTE/WARNING: Almost all of the problems I have read about in other reviews come down to 3 things because after 26 years, 2 houses and 6 toilets these things do NOT fail in less than 3-5 years (time depending on your water and a variety of random things):

Make SURE your float arm or the arm attached to your handle is not binding on anything when you put the cover on

If they have been working on water lines in your area, chances are that some trash has been sent down the line that can stop/slow this valve (the flushing procedure is in the box that may help this)

Using almost ANY "drop in" type cleaner will shorten the life of this or any other flush valve, don't use them!

There have been people asking why this one and not the 400A, I have attached a chart to show what you are paying for with those few dollars

NOTE: If you wish to reduce your chances of a leak, turn your water off for the house and not the supply line at the toilet. These valves have been sitting there usually for years and when you turn the water off and then back on many times they WILL leak at least for a few hours or more, if you turn the water supply off outside you will avoid this possible problem. If the toilet water supply valve has been used in the recent past without problem this can be ignored.
Images in this review
Customer image
Customer image
152 people found this helpful
Report
Reviewed in the United States on October 16, 2023
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
One person found this helpful
Report
Reviewed in the United States on September 1, 2016
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
82 people found this helpful
Report

Top reviews from other countries

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Martin Lacombe
5.0 out of 5 stars Easy remplacement
Reviewed in Canada on July 23, 2022
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
Juaneloo
5.0 out of 5 stars Silencioso y bastante versatil
Reviewed in Mexico on May 8, 2020
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
Phil
1.0 out of 5 stars One Star
Reviewed in the United Kingdom on January 28, 2016
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
Amazon Customer
5.0 out of 5 stars Fixed the Crapper
Reviewed in Canada on July 31, 2022
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase
Ing. Alfredo Hernandez
5.0 out of 5 stars Calidad probada y comprobada
Reviewed in Mexico on March 8, 2019
Size: Universal Fit for HET 1.28 galColor: Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill ValveVerified Purchase