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Fluidmaster PerforMAX High Performance Fill Valve 400H-002-P10

TLDR Review: Fluidmaster 400H Fill Valve

By ShopSavvy Team

Published: March 8th, 2025

Pros

•Installation is reportedly easy and straightforward, taking about 30 minutes for a DIY enthusiast.
•Compatible with Kohler Highline Arc models and works well with previously used Fluidmaster valves.
•Offers adjustable valves for both tank and bowl water levels, enhancing flush performance.
•Users with a history of Fluidmaster products appreciate their innovation and product evolution.
•Some users find it a satisfactory and recommended upgrade, solving previous flushing issues effectively.

Cons

•The fill valve is considered noisy and slow, contradicting its marketing as high performance.
•Installation instructions are unclear and confusing, particularly for users without plumbing experience.
•Some users experienced significant water spraying issues during testing, needing additional adjustments.
•The quality of materials is perceived as cheaper and flimsier compared to older models.
•Some experienced frustration due to installation difficulties and poor performance, resulting in returns.

Bottom Line

The Fluidmaster PerforMAX High Performance Fill Valve 400H-002-P10 is praised for its ease of installation and compatibility with various toilet models, making it a convenient option for those familiar with Fluidmaster products. However, the inconsistent performance, noisy operation, and confusing installation instructions could be off-putting for some users, particularly those new to plumbing repairs. Shoppers may wish to consider older Fluidmaster models for quieter operation and potentially better performance.

Lowest at any Popular Retailer

$13.98 at The Home Depot

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 62 retailers to give you the short version.