Services: Electrical testing and certification, environmental or chemical testing

language
- English
- 中文

400-9269-886

NEWS CENTER

Industry News

Company News

Knowledge

The new national standard for energy efficiency of range hoods and ventilation fans will be enforced by 2026! The 'strictest' new regulations will completely ban the sale of unqualified products

Time：

2025-12-18

The mandatory national standard GB 29539-2025 "Energy Efficiency Limits and Grades for Household and Similar Use Range Hood and Ventilator" will be officially implemented on November 1, 2026. The new standard integrates the energy efficiency requirements for range hoods and ventilation fans into one standard, replacing the two standards GB 29539-2013 and GB 32049-2015. The new standard sets the energy efficiency level of range hoods at level 3 and includes DC ventilation fans in the regulatory scope, comprehensively improving the energy efficiency indicators of household and similar ventilation appliances.

The mandatory national standard GB 29539-2025 "Energy Efficiency Limits and Grades for Household and Similar Use Range Hood and Ventilator" will be officially implemented on November 1, 2026. The new standard sets the energy efficiency level of range hoods at level 3 and includes DC ventilation fans in the regulatory scope, comprehensively improving the energy efficiency indicators of household and similar ventilation appliances.

The new standard integrates the energy efficiency requirements for range hoods and ventilation fans into one standard, replacing GB 29539-2013 "Energy Efficiency Limits and Grades for Range Hood" and GB 32049-2015 "Energy Efficiency Limits and Grades for Household and Similar Use AC Ventilators".

Scope of Application

The new standard specifies the energy efficiency levels, energy efficiency limits, and implementation standards for household and similar range hoods, ventilators, and multifunctional appliances with ventilation functions, and describes the corresponding test methods.

Suitable for:

External range hood installed on the upper part of household cooking stoves, stoves or similar appliances, with a rated voltage not exceeding 250V;
A single-phase rated voltage not exceeding 250 V, a rated ventilation input power not exceeding 500 W, an impeller diameter not exceeding 500 mm, a ventilation fan driven by an electric motor, and a multifunctional appliance with ventilation function.

Not applicable to:

Cooking smoke suction and exhaust device for downward suction system;
Commercial range hoods and other commercial cooking smoke suction and exhaust devices;
Specially designed ventilation fans for industrial use;
Intended for use in places with special conditions, such as corrosive, flammable, explosive gases, dust, steam, or gas;
Ventilators used for refrigeration equipment or air conditioners, as well as air to air energy recovery devices;
Ventilators embedded in appliances such as stoves and microwave cooking utensils;
Marine ventilation fan;
C-type ventilation fan, bidirectional exhaust ventilation fan, as well as B-type and D-type ventilation fans with a maximum static pressure less than 25 Pa;
A ventilation fan with a filter and a PM2.5 filtration efficiency greater than 90% according to the testing requirements of GB/T 34012-2017 for fresh air.

Note: The definitions of A-type ventilation fan, B-type ventilation fan, C-type ventilation fan, D-type ventilation fan, etc. are derived from GB/T 14806-2017.

Main technological changes

Range hood: significantly improving energy efficiency requirements

The energy efficiency evaluation method is more scientific: referring to international standards and combining with the current situation of the domestic industry, the evaluation index and experimental method of "total pressure efficiency under working air volume" are proposed for the first time, which is closer to the calculation method of total pressure efficiency set in real cooking scenarios for consumers, and more realistically measures the energy efficiency level of range hood products.

The energy efficiency evaluation dimension is more comprehensive, adding two indicators of the core purification ability of range hoods, namely "instantaneous odor reduction degree" and "oil separation degree", to ensure the synergy between product energy efficiency improvement and performance optimization. The indicator of "instantaneous odor reduction" clearly requires that the odor reduction rate within 3 minutes of stir frying should be ≥ 90%. The minimum requirement for "oil separation degree" shall not be lower than 80%, and the first level energy efficiency shall be above 92%.

More stringent requirements for energy efficiency indicators: Based on sufficient research and a large amount of measured data, taking into account factors such as mainstream production technology capabilities, product structure development trends, consumption trend characteristics, and energy-saving technology potential, after repeated demonstration, the energy efficiency level has been adjusted from the original standard of level 5 to level 3, and the energy efficiency indicators for each level have been increased by more than 50%.

The adjustment of energy efficiency levels and indicator requirements for range hoods means that a large number of old products that rely on inefficient motors and extensive designs will not meet the standards and will be forced to exit the market. The three hard indicators of "full pressure efficiency under working air volume", "instantaneous odor reduction degree" and "oil separation degree" are not only evaluation criteria for product technology upgrades, but also a "severe" market reshuffle in the kitchen appliance industry. During the market transition period before November 2026, many small and medium-sized kitchen appliance brands that cannot meet the standards will be forced to leave.

Ventilation Fan: Effectively Standardizing Product Energy Efficiency Management

Implementation scope is broader: DC ventilation fans are included in the scope of application, thus clarifying energy efficiency requirements for mainstream products in the ventilation fan industry.

Stricter requirements for indicators: On the one hand, a limit value requirement for "standby shutdown power" has been added to all products. On the other hand, a limit value requirement and testing method for "heating energy consumption" have been added to ventilation fan products with heating function, such as household bathroom heaters, which effectively guide and reduce consumer usage costs.

The evaluation method is more detailed: based on sufficient research and a large amount of measured data, the energy efficiency index requirements have been improved, and D-type ventilation fans are divided into two categories: "centrifugal D-type ventilation fans with the centerline of the inlet and outlet coinciding or parallel" and "other types of D-type ventilation fans", and energy efficiency index requirements have been formulated separately.

The new mandatory national standard for energy efficiency of range hoods and ventilators, GB 29539-2025, will be implemented from November 1, 2026. Relevant enterprises should pay timely attention to the main technological changes mentioned above, and upgrade energy-saving technologies such as improving motor efficiency, optimizing air duct design, and matching intelligent loads for range hoods and ventilation fans; Strictly control the inventory of transitional products; Entrust Jiayu Testing Laboratory to conduct comprehensive testing on all models currently on sale/under development, develop products that comply with the new national standards, and complete the comprehensive product upgrade and new energy efficiency certification management as soon as possible.

As a professional third-party testing and certification service organization, Jiayu Testing has qualifications such as CMA, CNAS, CBTL, CCC, etc. It is also a laboratory for energy efficiency labeling registration and testing in China. It has a professional testing technology team, equipped with advanced instruments and equipment, proficient in various regulations and standards, and can provide China energy efficiency labeling testing and filing services for various electronic and electrical products. If your product requires safety and energy efficiency certification, please feel free to contact us at 400-9269-886!