Frequently Asked Questions


Chair height or seat height refers to the distance from the finished floor to the top of the toilet seat. An ADA-compliant toilet seat must be between 17 inches (minimum) and 19 inches (maximum) above the finished floor. Delta toilets are ADA-compliant to make sitting down and standing back up easier.
ADA-compliant chair height is a minimum of 17 inches and a maximum of 19 inches from the finished floor to the top of the toilet seat. Standard height toilets are typically 14 to 15 inches in height.
Gallons per flush (gpf) is a measurement, in gallons, of the total volume of water required to flush a toilet or urinal.
High-efficiency toilet (HET) describes a toilet that flushes 20 percent less than the U.S. maximum of 1.6 gallons per flush. This equates to an average 1.28 gallons per flush. Delta toilets qualify as high-efficiency toilets.

CALGreen refers to the California Green Building Code, a statewide code relating to certain categories of residential and non-residential buildings. The code mandates a 20 percent reduction in water usage for toilets as compared to the industry baseline of 1.6 gallons per flush, resulting in a water usage requirement of not more than 1.28 gallons per flush. Delta toilets are CALGreen compliant.

CALGreen is a registered trademark of the State of California Building Standards Commission.

The multi-tool comes with every Delta toilet sold at retail. It is a single tool that can be used to complete the entire installation quickly and easily. One side of the tool is used for the nuts and washers that attach your bowl to the floor and your tank to the bowl. The other side of the tool can be used as a wrench to tighten your water supply line to the water connection in the wall. This tool also comes with a Phillips and flathead screw driver bit to assist with the seat installation.
Delta® toilets that feature the exclusive SmartFit® supply line come equipped with an integrated supply line that does not go through the bottom of the tank. Why is this important? This means that your toilet has no unnecessary holes in the bottom of your tank. No holes, no leaks, no worries! There is also no need for you to buy another supply line.
Delta® toilets feature the exclusive SmartFit® tank-to-bowl connection. The SmartFit system reduces potential leak points and over-tightening of the fasteners, which can crack the toilet. Utilizing a metal bracket on the bottom of the tank to secure the bolts to the bowl, the SmartFit tank-to-bowl connection eliminates the need for holes typically found in the bottom of the tank. For the convenience of the installer, the three bolts of the SmartFit connection system on Delta toilets are preassembled to the mounting plate.
While there is no handle included on the toilets with FlushIQ technology, it is possible to actuate one manual flush in the event the FlushIQ technology is not operating properly. Simply lift the tank lid off the toilet and push down on the red, manual flush lever. This will require some force due to the weight of the water.
Yes! You can put the toilet into a "sleep mode” by touching the sensor for 7 seconds. The sensor will begin to blink after 3 seconds (this is just letting you know that it is about to enter sleep mode). Once the light turns off, it will start to blink blue. Your toilet is now in sleep mode. It will stay asleep for 10 minutes, or the process can be repeated to manually take it out of sleep mode.
A sensor on the back of the bowl monitors the water level in the bowl. If the water level rises to a critical point, the sensor will prevent additional flushes until the overflow issue is resolved, preventing water from spilling out of the bowl. The LED display will flash red and blue indicating that there is an issue.
Built-in sensors alert you to possible tank leaks, potentially saving water and money. A sensor monitors the water level in the tank. If a leak is detected as the toilet is being flushed, the LED indicator will show yellow instead of blue. If that happens, look at the flapper to be sure there is no debris, obstruction or wear that might be causing the leak.
FlushIQ technology uses capacitive sensing for a clean, touch-free flush with a simple wave of the hand. A sensor on the tank will activate a flush with an intentional wave of a hand. The sensor is positioned out of the way so a user will not activate a flush that they don’t want.
Depending on the water pressure of your home, it will take about 45 seconds to fill the tank. If it is taking much longer, ensure the water supply valve is fully open. If it is still taking too long, remove the brass nut on the inlet supply line in the tank and clear any debris that may be in there.
The first step is to ensure that the water supply is turned on. After this, check battery installation, orientation and condition. If the batteries seem ok, then check to make sure the cardboard spacer was removed from the flapper and that nothing else is lodged inside the tank. If it still does not work, please call Customer Service.
Ensure the waterline is properly set. The water level can be adjusted by turning the red knob. Turning it counterclockwise will raise the water level. If there is still a poor flush, ensure all obstructions are cleared from the trap way, siphon jet, and rim holes.
Often when a new tile or wood floor is installed, the floor is trimmed around the flange, leaving the flange below the floor. Plumbing codes require that the flange must be above the floor. You will need a flange extender, which is readily available at your local building hardware store.
Some homeowners like the bowl sealed to the floor and some do not. But please note that if you seal the bowl to the floor, it will be difficult to know if there is a leak.
For optimal performance and comfort, having a level toilet is recommended. However, floors, particularly in older buildings, sometimes have high and low spots that cause the toilet to rock or not be level. First, be sure the outlet horn of the bowl is not sitting on the flange. (If it is on the flange, you will probably need a new wax seal.) Second, to ensure the toilet is level, use a carpenter's level throughout the installation process. Third, use permanent shims between the bowl and the floor to level the toilet.
In addition to the items that came in your Delta toilet box, you will need a supply line to connect the toilet to the water supply shut-off valve. You may also want safety goggles, a flashlight to see behind the toilet, a carpenter’s level, and a blanket or other soft surface to set the toilet on while you unpack the box. It’s also a good idea to have someone on hand to help you install the toilet bowl.

Delta® toilets with FlushIQ™ technology are equipped with three unique features that differentiate it from the competition and even above and beyond the other innovations found in other Delta toilets.

  1. Overflow Protection
  2. Touch-Free Flush
  3. Leak Detection

Learn more about FlushIQ™ technology.