GB 38448-2025 Minimum allowable values and grades of the energy efficiency and water efficiency for smart toilets English, Anglais, Englisch, Inglés, えいご
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ICS27.010
CCSF01
National Standard of the People's Republic of China
GB38448—2025
Replaces GB38448-2019
Minimum allowable values and grades of the energy efficiency and water efficiency for smart toilets
Released on August 1, 2025 Implementation on April 1, 2027
State Administration for Market Regulation, National Standardization Administration
Contents
Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Energy and water efficiency rating
5 Technical Requirements
6 Test methods
7 Implementation of the document
Appendix A (Normative) Test Methods
References
Minimum allowable values and grades of the energy efficiency and water efficiency for smart toilets
1 Scope
This document specifies the energy and water efficiency ratings and technical requirements for smart toilets, and describes the corresponding
test methods. This document applies to smart toilets installed on cold water pipes within buildings and facilities.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references. For dated references, only the version corresponding to that date applies to this document. For undated references, the latest version (including all amendments) applies to this document.
GB/T8170 Rules for rounding off values and the expression and determination of limit values
GB/T9195 Terminology and classification of building sanitary ceramics
GB25502 Toilet water efficiency limit values and water efficiency grades
GB/T34549 sanitary ware intelligent toilet
3 Terms and Definitions
3.1
The terms and definitions defined in GB/T 9195, GB 25502 and GB/T 34549 and the following apply to this document.
Smart toilets are controlled by
electromechanical systems or programs to perform at least one of the following functions: warm water washing (such as butt washing, feminine washing) and seat heating.
Note 1: Includes integrated smart toilets and split smart toilets. Note 2: The warm water cleaning function includes
the nozzle self-cleaning function.
3.2
Energy consumption per unit cycle energyconsumptionperunitcycle The power
consumption of an intelligent toilet within one test cycle (1.5h) under the test conditions specified in this document.
3.3
Standby mode(s) The intelligent toilet provides
one or more of the following user oriented functions or protection functions when connected to the main power supply and is continuous for any product Product
mode. --- Triggering other modes (including starting or stopping active modes) by triggering remote switches (including remote control), internal sensors, or timers. --- Continuous function: Information or status display including
clock. --- Continuous function: Sensor-based function.
[Source: GB/T35758-2017, 3.6, with modifications]
3.4
Standby power: The average power of the smart toilet in standby mode.
3.5
Minimum allowable value of energy efficiency and water efficiency for smart toilets
smarttoilets
Under the test conditions specified in this document, the maximum energy consumption per unit cycle and the maximum average water consumption for cleaning (if applicable) of the intelligent toilet are as follows:
), maximum average flushing water consumption (if applicable), maximum full flushing water consumption of dual-flush smart toilet (if applicable), dual-flush smart toilet Maximum half-flush water volume for the appliance (if applicable).
4 Energy and water efficiency ratings
The energy efficiency and water efficiency of smart toilets are divided into 3 levels, among which level 1 has the highest energy efficiency and water efficiency.
Average water consumption for washing (if applicable), average water consumption for flushing (if applicable), water consumption for full flushing of dual-flush smart toilet (if applicable), dual flush The water consumption of half-flush of smart toilet (if applicable) shall comply with the requirements of Table 1. According to the minimum level of each indicator in Table 1
judgement.
Table 1 Energy and water efficiency rating indicators of smart toilets
Note 1: The average flushing water consumption is applicable to single-flush smart toilets and dual-flush smart toilets.
Note 2: “*” applies to integrated smart toilets.
Note 3: Ordinary smart toilets have a warm water cleaning function; simple smart toilets do not have a warm water cleaning function
5 Technical Requirements
5.1 Energy and water efficiency limit values
The energy efficiency and water efficiency limit values of smart toilets are the energy consumption per unit cycle and the average water consumption for cleaning specified in energy efficiency and water efficiency level 3.
water consumption (if applicable), average flushing water consumption (if applicable), full flushing water consumption of dual-flush smart toilet (if applicable), dual-flush smart toilet The water consumption for half flush of the appliance (if applicable).
5.2 Cleaning function
