You’ve seen them. You’ve pressed them. But did you know that the two buttons on your toilet aren’t just design flair — they’re part of one of the most effective water-saving innovations in modern plumbing?
While many assume both buttons do the same thing (or worse, think one is “broken”), the truth is: they’re designed to help you use only the water you actually need.
Welcome to the smart world of dual-flush toilets — where every flush can make a difference.
How Dual-Flush Toilets Work – The Simple Genius Behind the Two Buttons
Large Button (Full Flush)
For solid waste
~6–9 liters (1.6–2.4 gallons)
After #2
Small Button (Half Flush)
For liquid waste
~3–4.5 liters (0.8–1.2 gallons)
After #1
The idea is simple:
Why use a full tank of water for urine when half will do the job?
By choosing the right button, you cut unnecessary water waste — automatically.
Why This Design Is a Game-Changer
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