Single-flush vs dual-flush toilets

Smart-toilet features differ by model. Understanding the underlying system helps you distinguish useful functions from features that add complexity or maintenance.

Understand the system

An integrated smart toilet combines a ceramic fixture with electrically powered components that may include water heating, a heated seat, wash nozzle, dryer, sensors and automatic controls. The flushing mechanism and backup method depend on the exact model.

Flush-volume comparison

HOROW lists the T38 at 1.06 GPF and the T38P and X70 at 1.0/1.28 GPF dual flush. Actual water use depends on use patterns and the exact model; do not equate a listed flush volume with independently measured performance.

Before you buy

Confirm the current price, stock, shipping destination, return conditions, included accessories, installer requirements and warranty at checkout. Check current offers and the written terms before purchasing.

Understand the controls

A single-flush toilet uses one nominal flush volume; a dual-flush design offers two settings. The stated gallons per flush describe a test or rated volume, not a guarantee of identical real-world water use.

Compare performance and usability

Check the exact model's flush specifications, control placement and maintenance instructions. A dual-flush control only helps if household members can distinguish and use the settings appropriately.

Consider water use without overpromising savings

Actual consumption depends on use patterns, repeat flushing and the fixture's performance. Compare independently documented ratings where available instead of estimating savings from a product name.

Keep model-specific documentation

Save the installation manual, warranty, purchase date and model or serial number. These details make troubleshooting and parts requests much easier than describing the toilet only by its appearance. Check for manufacturer-issued instructions before changing settings or replacing a component.

Separate routine care from repairs

Routine cleaning and accessible filter maintenance may be covered in the user manual. Internal electrical work, leaking hidden connections and repeated pump failures require a different level of attention. Stop using the fixture when a fault creates an electrical or water-damage risk, and seek qualified assistance.

What the buttons actually mean

Single-flush models deliver one nominal volume; dual-flush models offer a reduced and a full setting. Compare published gallons per flush for each mode rather than treating ‘dual’ as an automatic guarantee of lower real-world consumption.

Look for independent certification

EPA WaterSense certification involves third-party checks of efficiency and performance. A manufacturer-listed 1.28 GPF number alone does not establish that a particular model is WaterSense labeled; verify the exact model in EPA’s product search.

For certification details, see the EPA WaterSense residential toilets guidance. Verify the specific model in the EPA product search rather than assuming that a low published flush volume establishes certification.