Fluidmaster 400A VS 400AH
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Fluidmaster 400A VS 400AH-What’s Your Ultimate Choice?

Is there anything more annoying than a broken toilet fill valve? Since you are here already, you are definitely in need of fixing your broken toilet. Then you are in the right place as we are going to discuss two of the best toilet fill valves: Fluidmaster 400A vs 400AH.

Broken toilets are one of the most common problems people face, and the plumbers fix. If you do not have suitable fill valves, water refilling, and flushing the toilet can be noisy.

Now imagine using the toilet with endless noise and wasting too much water. This is why you need a good quality fill shower valve. And that’s why we are comparing Fluidmaster 400A and 400AH in this article.

Fluidmaster 400A vs 400AH



Refills your toilet tank: without much noise

Refills your toilet tank: noiseless and faster

Dimension: 15.74 x 15.53 x 12.94 inches
Dimensions: 3.13 x 12.5 x 4.5 inches
Per flush: 3.5 to 7 gallons water
Per flush: 1.28 to 1.6 gallons water
Warranty: 3-year
Warranty: 7-year 
Performance: good-quality
Performance: high-quality

Fluidmaster: It Offers What You Need

When it comes to choosing the best toilet fill valve, customers often get confused. There are many such products available.

If you have questions like “is Fluidmaster a good brand?” the answer is yes. This brand’s toilet products are most used and recommended. Fluidmaster is known for its quality toilet products that are trustworthy.

The reason customers love this brand is for its affordable price, easy installation, and long-lasting quality. But how long does a Fluidmaster last? Depending on the product’s type and quality, it can be 3 to 5 or 7 years.

Not only that. These valves also save you from wasting water and too much flash noise. Besides those, another advantage of using a Fluidmaster valve is that you can install these on your own without help or extra tools.

It is sustainable for your home or toilet tank. That’s why this brand is many users’ favorite. So, let’s start and find out more about two of the most popular Fluidmaster toilet fill valves.

Fluidmaster 400A:

If you are hoping to get an easily installable toilet fill valve, it should be the Fluidmaster 400. It has been designed to fit the upgraded version of modern toilets.

This toilet valve refills your toilet tank efficiently without much noise. And it also makes the toilet flushing less noisy. As a result, you get to have proper privacy when it comes to performing toilet rituals.

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The Fluidmaster 400A has a dimension of 15.74 x 15.53 x 12.94 inches. It is also adjustable with 9-14 inches of height. You can adjust it effortlessly with a 2 inches flush valve.

So, how does a Fluidmaster 400A work? This fill valve is designed to stop leakage. The anti-siphon design is a particular reason to choose this valve.

What does an anti-siphon design do? It keeps the water flow in one direction, keeping the tank water clean and stops the water from going backward.

The Fluidmaster 400A cleans the toilet bowl efficiently with a supply of 3.5 to 7 gallons of water per flush. Yes, this amount of water may seem too much, but the valve aims to give you a well-cleaned toilet bowl.

This toilet fill valve performs a long flash. The water supply from the tank keeps the flow long enough to ensure bowl cleanliness.

As for replacing the valve, it is not a tough job. Many people said that they could do the job themselves without any help or get a plumber.

The package comes with some replacement parts. They are: lock, shank washer, nuts, refill tube, etc. The instruction guide is very easy to understand that you can replace the valve within 10-15 minutes.

The refill tube is long enough to adjust to the flush tube. The lock and the coupling nuts keep the valve secure to its place. You don’t even need any extra tools to screw them tightly.

The durability of this toilet fill valve is long. Even though it comes with a 3-year warranty, it can last longer than that. The plastic material of the valve is corrosion-resistant, making it more durable.

If it has one disadvantage, that would be the price. The Fluidmaster 400A is a bit costly compared to other toilet fill valves.

Fluidmaster 400AH:

Another fill valve we have today is the Fluidmaster 400AH PerforMAX Universal High Performance Toilet Fill Valve. As both of them come from the same brand, this fill valve is also great in its performance.

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It is one of the most likable toilets fill valves because of its high-quality performance. This universal fill valve is designed to fit all kinds of toilets.

This fill valve is one of the plumbers’ top picks because of its nearly noiseless refill and flush system. The slow filling makes it the quietest valve available in the market. With this, your toilet ritual can be peaceful without any worry.

The PerforMax model is more like an upgraded version of the Fluidmaster 400A. Because of this upgraded technology, this fill valve refills the toilet tank faster.

The fluidmaster 400AH dimensions is 3.13 x 12.5 x 4.5 inches. It is designed for toilet bowls that are larger than regular ones.

The fill valve height is adjustable between 10 to 15 inches. It can also control both the fill and the flush valve. And this valve works well with a 2 inches flush valve.

Fluidmaster 400Ah flushes the bowl two times more efficiently and reduces water usage. And it comes with a roller clamp to reduce water usage.

The valve flushes 1.28 to 1.6 gallons of water per flush. That means it saves water as well. Its design and power allow it to fit any toilet.

This powerful toilet fill valve is designed to perform well and last longer at the same time. It comes with a 7-year warranty. That explains enough about its quality.

What makes it more preferable is the price. All these incredible features come at a low price. You can afford it without having any second thoughts.

Replacing your older toilet fill valve requires only three steps. You can install it without help. Just follow the instruction or our step by step guide below.

Which One Should You Get?

We believe that it is you decision to make. It depends entirely on your budget and on the pros and cons of having that item.

The aim of discussing Fluidmaster 400A vs 400AH is to inform you about both of these products. Both of them are popular and well-known for their quality, effectiveness, and long durability.

However, the Fluidmaster 400AH comes with more pros than 400A since this is an upgraded version. It is also fast working and less noisy.

And, when it comes to saving water, the Fluidmaster 400AH does the job well. Also, it is less expensive. So, this could easily be the ultimate winner.

On the other hand, Fluidmaster 400A is also one of the top choices for its performance. So, now it’s time for you to decide which one you want.

How To Install/Replace A Toilet Fill Valve

If you have got the new fill valve, now it’s time to install it. But if you don’t know how to do that, you might need help. But sometimes it’s worth trying on your own.

Replacing the valve is a piece of cake. You can do it without wasting much time or effort. Here is how you can install/replace the valve:

First of all, turn off the water supply line. You wouldn’t want to work with a tank full of water. Then remove the tank lid.

Next, flush off the tank water to empty the tank. If there is still water around the bottom, use a sponge to soak up the sitting water.

The pipe of the valve is secured with a nut outside the tank. You can easily locate it at the bottom of the tank, where the water supply line was attached. Turn it counterclockwise until you can remove it altogether.

Place the new toilet fill valve where the old one has been. Adjust the height of the valve if necessary. Then secure it back to its place with the nut.

You need to attach the thin hose of the fill valve to the flush valve line. And once everything is installed the way it was, close the tank lid and turn on the water supply.

But, do make sure to check if the fill valve is filling and flushing water properly. If it works the way it should, close off the lid. And you are all set with a new toilet fill valve.

Final Verdict:

We would like to say that the toilet fills valve problem is inevitable. It is a frequently used product that is bound to malfunction at one point. But knowing when to replace it needs observation.

Toilet valves need replacement if you notice noise in the tank. There might be water leakage or problem with refilling the tank.

If the problem keeps occurring even after fixing the valve, that means it’s time to change the toilet. So, how often should you replace toilet? A toilet can last up to 50 years, but it is better to replace them after 25 years.

Finally, let’s hope this Fluidmaster 400A vs 400AH article was informative enough for you to get the fill valve you need. It’s better to stay cautious than going through trouble.

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