Dual flush toilet wasted more water, how to fix it
Dual flush toilet wasted more water, how to fix it
Key Takeaways
- Recently I discovered I have in fact actually wasted water for nearly three years
- I learned that I need to re-adjust the Dual Flush by Danco
- The URL for my original installation video is: If you are like me and did not verify that in fact we are using less water, now I can show you my method so that you can double check your dual flush system and re-adjust it if necessary to save water
- Index This video only applies to the Dual Flush made by Danco since the Fluidmaster Duoflush has a different design, and does not have the same problem
Why This Matters
Recently I discovered I have in fact actually wasted water for nearly three years. I learned that I need to re-adjust the Dual Flush by Danco. The URL for my original installation video is: If you are like me and did not verify that in fact we are using less water, now I can show you my method so that you can double check your dual flush system and re-adjust it if necessary to save water. Index This video only applies to the Dual Flush made by Danco since the Fluidmaster Duoflush has a different design, and does not have the same problem. Please check out the video for Fluidmaster system through this link: During the filming of the Fluidmaster video, I re-visited the Dual flush Danco design. It was a gut-wrenching experience to learn that I had wasted water every day after my installation 3 years ago of a device that was installed for the purpose of saving water. The Danco installation guide only has one diagram about adjusting the water, without a strategy to measure and compare the amount of water actually used. The instructions only say that when the Green Slide or Blue Float is down, that means less water drains. This video is very necessary to complete the installation. So please share this video with other people so that we save water. Anyway, one lesson we learned this time is that you need to actually measure the water you flush down. You need to measure both the quick flush as well as the full flush. You may count your money carefully, but you also need to pay attention to your tank so that you are not flushing your hard-earned money down the toilet. Since different viewers may have different questions in mind, here are the timestamps so that you can click and skip to the sections you’re interested in: A few toilet or plumbing related issues can be found below: Slow Draining: Easy 5 Seconds Toilet Flush Test and Solving the Slow Flush Mystery 100% free: convert a single flush toilet to dual flush, and adjust single flush 5 Different Ways To Make Your Toilet Use Less Water Toilet siphon effect, when plunger, auger and snake fail: Big Mystery of the Adjustable Toilet Flapper Solved 5 Ways To Unclog Toilet Using A Garden Hose How To Unclog Bathroom Sink How To Unclog Kitchen Sink Best Bidet: How to Select, Install and Use a Bidet For more details check out here
Understanding the Basics
The most common reason a dual-flush system wastes water is that the partial flush valve is not closing completely or is closing too slowly. This means water continues to trickle into the bowl long after the flush cycle should have ended. Another cause is that users press the wrong button (full flush when partial would suffice) because the buttons are not clearly labeled or are confusing. A third issue is that the partial flush is set too low to actually clear the bowl, causing people to flush twice — using more water than a single standard flush would have used.
The DIY Advantage
A toilet that runs continuously even at a trickle can waste 200 gallons per day — over 6,000 gallons per month. Even a small flush valve leak adds significant cost to your water bill.
Tips for Best Results
Check for a slow leak by adding food coloring to the tank water and waiting 30 minutes without flushing. If the colored water appears in the bowl, the flush valve is leaking. Adjust the partial flush duration so it is just enough to clear the bowl for liquid waste. Make sure the valve seal is clean and free of mineral deposits. Label the buttons clearly (most kits include stickers) so everyone in the household knows which button is which.
Video Chapter Guide
Here is a quick reference for the key sections covered in the video:
- 0:00 Dual flush toilet may waste more water
- 0:34 my Dual flush Danco wasted water for 3 years
- 1:29 Dual flush Danco Installation Instruction not good
- 2:06 measure full flush water
- 3:04 full flush = 2.5 gallons
- 3:44 two ways to adjust the height of the refill valve float
- 4:28 quick flush blue float
- 5:36 two parts: yogurt container+gallon milk jug
- 6:48 quick flush=0.9G ; full flush=1.2G
- 7:08 tri-flush system
Use these timestamps to jump directly to the section most relevant to your situation.
More Practical Guides
Fixing a malfunctioning dual-flush system restores the water savings that motivated the conversion in the first place.
For more hands-on tutorials, check out our guides on bathtub caulking and peeling garlic easily without special tools. Each one follows the same practical, no-nonsense approach to help you save money and build useful skills.