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Fluidmaster
Fluidmaster 400H Fill Valve
$10.99$15.99across 40 retailers
Lowest at any Popular Retailer
$13.98 at The Home DepotWhere to Buy
Prices last updated: May 3rd 2026 7:34 pm
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.
What Reviewers Are Saying
Praised
very easy to install13%
works perfectly6%
super easy6%
Criticized
noisy and slow19%
takes a long time to fill13%
difficult to install13%
confusing instructions13%
leaked right off the start6%
plastic piece is trash6%
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