The 6 Best Toilet Fill Valves

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This wiki has been updated 12 times since it was first published in May of 2020. Toilet fill valves are responsible for filling and controlling your toilet tank's water level, making them an essential piece of plumbing hardware. Old, defective, or improperly fitted models can result in a range of problems, all of which can be inconvenient headaches for any homeowner. The options assembled below are designed to operate quietly, efficiently, and leak-free. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki.

1. Kohler Genuine

2. Korky 528

3. Fluidmaster PerforMAX

Editor's Notes

September 06, 2020:

The most important thing to remember choosing a toilet fill valve, is that you must make sure it's compatible with your specific toilet. Use the model number on your toilet to look up what kinds of valves it accepts, and you can start from there. Keep in mind that even the "universal" options are usually only referring to a specific brand of toilet, not all toilets on the market.

If you have an older toilet that is using an outdated fill valve -- even if it's still working -- you probably want to replace it since it probably isn't meeting current plumbing standards. One of the most common outdated styles is the ballcock-style valve. These are easy to spot due to their signature large floating ball, connected to the rest of the valve with a thin stem.

Installing your new fill valve is a relatively simple process, and can usually be done in a few minutes. The AmazonBasics AB-T105 and Next by Danco HC660 are specifically designed to be easy to install. That being said, if you're unclear on the instructions, or uncomfortable installing it yourself, go ahead and hire a professional. A plumber's fee may increase your budget, but accidentally damaging your toilet will be much more expensive.

If you're ready to replace your toilet as well, or if you're remodeling your bathroom, consider this collection of toilet options. You may be surprised at the innovation and variety on the market today. If you're feeling adventurous, one of these bidet toilet seats could be a wise addition.

4. Next by Danco HC660

5. AmazonBasics AB-T105

6. Fluidmaster Universal

Alexander Rennie
Last updated by Alexander Rennie

Alex Rennie is a writer from Los Angeles, CA, and holds a bachelor’s degree in English from the University of Missouri. Having been a successful residential and commercial carpenter for six years in New York City, he has a comprehensive knowledge of woodworking, power tools, and the world of home DIY. His passion for construction and carpentry keep him up to date on the latest gadgets and techniques, and he never misses an opportunity to patch up a drywall dent or sand down a rough edge. In his spare time, he enjoys hiking the Santa Monica mountains with his family and their dogs, and fostering rescue animals.

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