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PerforMAX 3-in Universal Adjustable Toilet Fill Valve

Ratings & Reviews for Fluidmaster PerforMAX 3-in Universal Adjustable Toilet Fill Valve

4.7
2044
Review
 4.7 out of 5
2048 Reviews


92% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this fill valve for its straightforward installation and reliable performance. Most highlight how simple and quick the setup is, requiring only basic hand tools. Reviewers consistently report the valve works exactly as intended, effectively resolving common issues like slow filling or overfilling. Many appreciate the dual adjustment capability for both tank and bowl water levels and its universal compatibility across toilet models. The quiet operation is frequently noted as an improvement over older models. A few customers mention occasional noise during filling or rare leaks, though these represent isolated experiences. Overall, most consider it an excellent DIY solution for toilet repairs.

Customer review summary generated by AI, including incentivized reviews.
2048 Customer Reviews

Easy to use

Easy to install and adjust. Came in a cardboard box.

May 12, 2026
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Toilet replacement

Would Recommend

Replaced my noisy, constantly-running fill valve with this Fluidmaster PerforMAX and couldn't be happier. Install took maybe 15 minutes — the adjustable shank height fit my older toilet perfectly, and everything locked down tight on the first try. The difference was immediate. Tank refills faster, runs nearly silent, and shuts off completely every time. No more phantom running or wasted water on my bill. Several months later and it's still working flawlessly. For the price, it's a no-brainer upg...

May 11, 2026
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Quick easy install

Easy to install and adjust on my Mayfair toilet. Stopped a leaky one quickly.

May 11, 2026
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good price

Would Recommend

Very easy to install and good quality and price

May 10, 2026
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The flush of silence

Would Recommend

Previous fill valve had a air leak that caused a whistle when flushing, purchased this one and whistle is gone

May 9, 2026
Verified Purchaser
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Good

Works perfect

May 9, 2026
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It is easier than you think

Would Recommend

Easy to install. Instructions were very clear and easy to understand

May 9, 2026
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Easy to install

Would Recommend

dependable and efficient

May 9, 2026
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Reliable product

Would Recommend

Easy to install and good performance

May 8, 2026
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Works like new.

Would Recommend

Easy fit. Well made product.

May 8, 2026
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Nice & easy to install !!!

Would Recommend

Really a well made unit and easy to install.

May 8, 2026
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Simple and cheap, works fine.

Would Recommend

Worked fine.

May 7, 2026
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cheap

Would Not Recommend

Doesn't always completely flush...

May 7, 2026
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Response from FluidmasterSupport

If the tank is filling up every time to the proper level and you have an inconsistent flush then you may have a problem with one of your other compon...

FluidmasterSupportMay 8, 2026

FluidMaster

Excellent Value

Would Recommend

Priced well, built tough, easy to install

May 7, 2026
Verified Purchaser
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Always a good product

Would Recommend

This fill valve was always dependable . Used it for many years

May 7, 2026
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None

Works great

May 7, 2026
Verified Purchaser
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