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- It is not harmful to the mechanism.
- But it is not more efficient either.
- The system does not combine volumes—it simply flushes as if the larger button was pressed.
Maintaining Your Dual-Flush Toilet

You don’t need a plumber for basic maintenance. A few simple steps go a long way:
- Clean the seals regularly to prevent leaks.
- Use white vinegar to descale the valve if you hear hissing or if the tank fills slowly.
- If the toilet runs continuously, check the mechanism under the buttons—often, a quick adjustment fixes it.
- If you prefer visuals, plenty of tutorials show step-by-step how to disassemble, adjust, and clean the system.
Replacement Costs
If you ever need to replace the flush valve:
- Expect to pay €15 to €30 for a standard part, available in most hardware stores.
- With regular care, the mechanism can last for many years.
- A small investment with long-term savings.
A Simple Gesture with Real Impact
Choosing the right button when you flush may seem insignificant, but the impact is real: lower water use, lower bills, and a positive contribution to the environment.
So tonight, take a closer look at your toilet. If it has two buttons, you now know exactly how—and why—to use them wisely.
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