ICS 27.010  
F01 
 
 
 
  
 
National Standard  
of the People's Republic of China  
 
 
 
GB XXXX -20XX  
 
 
 
Minimum allowance values of energy 
efficiency and energy efficiency grades for 
household and similar purposes A.C. Electric 
ventilating fans  
 
 
 
  
(Draft for appr oval)  
 
 
 
 
 
 
 
 
 
 Issue Date: 20XX – XX – XX Implementation Date: 20XX – XX – XX 
 
 
Issued by Standardization Administration of the People's Republic of China and  
General Administration of Quality Supervision, Inspection and Quarantine of 
the People's Repub lic of China  
GB XXXX -20XX  
- 2 -  
Foreword  
 
 
Except Section 4.3 which is mandatory, all provisions in this Standard are recommendatory clauses.  
 
This Standard is drawn up in accordance with the rules given in GB/T1.1 –2009.  
 
This Standard is proposed by the Department of Res ource Conservation and Environment 
Protection of the National Development and Reform Commission.  
 
This Standard is under the jurisdiction of the National Standardi sation Technical Committee 20 on 
Energy Fundamentals and Management (SAC/T20).  
 
The organisat ions that participated in the drafting of this Standard:  
China National Institute of Standardi sation  
Guangdong Genuin Electric Co.  Ltd 
GD Midea Environment Appliances MFG. Co. Ltd  
Taishan Gangyi Electrical Appliance Co. Ltd  
Guangzhou Vkan Certification &  Testing Institute  
Jiangmen Jinling Fan Manufacturing Co.  Ltd 
Broan Building Products (Huizhou) Co. Ltd  
Airmate Electric (Shenzhen) Co. Ltd.  
Panasonic Ecology Systems Guangdong Co.  Ltd 
Jiangmen Jinling Exhaust Fan Manufacturing Co. Ltd  
 
This Standard  was d rafted by : Cheng Jian hong, Zhu Zhong hua, Wang Pan, Huang Jun hao, Huang 
Yong shi, Zhao Jian jiang, Peng Zhongcheng, Li Yan, Tan Jin jian, Chen Jiang, Gu tian Zhi zai, Liu 
Xiang  
 GB XXXX -20XX  
- 3 - Minimum allowable values of energy efficiency and energy efficiency grades for elect ric ventilating 
exchange fans designed for household use and similar purposes  
 
1 Scope  
This Standard specifies the minimum allowable values of energy efficiency, the energy efficiency grades, the 
evaluating values of energy conservation, the testing method s and the inspection rules for household and 
similar purpose electric ventilating  exchange  fans (hereinafter referred to as ventilating fans).  
 
This Standard applies to electric ventilating fans driven by single -phase motors with rated voltage not 
exceedin g 250  V , rated power input not exceeding 500  W and impeller diameter not exceeding 500  mm. 
 
This Standard does not apply to the following application of ventilating fans:  
a) Ventilating fans speci fically designed for industr ial use; 
b) Ventilating fans int ended to be used under special conditions, such as places with corrosive  gases , 
flammable  gases  or explosive gas es, dust, steam or coal gas; 
c) Ventilating fans used in air heaters, refrigerators or air conditioners;  
d) Ventilating fans which are embedded into appliances (such as stove and microwave cooking utensils);  
e) Ventilating fans used in marine vessels;  
f) Type C ventilating fans, two -way air -outlet ventilating fans, as well as Type B and Type D ventilating fans 
with the max static pressure of less  than 25  Pa. 
 
2 Normative References  
The following listed documents are indispensable in the app lication of this Standard. For reference 
documents whose dates are quoted only the versions quoted are applicable to this Standard. For undated 
reference documen ts, the latest versions (including all amendments) apply to this Standard.  
 
GB/T 1236 Industrial fans  – Performance testing using standardi sed airways  
 
GB/T 2828.1 Sampling procedures for inspection by attributes – Part 1: Sampling schemes indexed by 
accep tance quality limit (AQL) for lot -by-lot inspection  
 
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes ( applicable  to inspection of 
process stability)  
 
GB/T 14806 Electric ventilating  exchange  fans and regulators for household and similar purposes  
 
3 Terms and definitions  
The terms and definitions set out in GB/T 14806 and below apply to this Standard.  
 
3.1 The energy efficiency values for ventilating fans  
Under specific standard test condition s, the ratio between the measured a ir flow and the measured input 
power of the fan -leaf driving motor of a ventilating fan, measured in  cubic meters per minute per watt 
(m3 min-1 W-1). 
 
3.2 The minimum allowable values of energy efficiency for ventilating fans  
Under specific standard test condition s, the permitted minimum value of energy efficiency of a ventilating 
fan, measured in  cubic meters per minute per watt (m3 min-1 W-1). GB XXXX -20XX  
- 4 -  
3.3 Reach minimum allowable values of energy efficiency for ventilation fans  
The minimum allowable values of e nergy efficiency for ventilating fans , which will be applied some years 
following  the implementation of this Standard.  
 
3.4 The evaluating values of energy conservation for ventilating fans  
Under specific standard test condition s, the minimum value of ene rgy efficiency should be achieved by an 
energy -conserving ventilating fan, measured in  cubic meters per minute per watt (m3 min-1 W-1). 
 
4 Technical requirements  
4.1 General requirements  
The characteristics of ven tilating fans which are subject to this Sta ndard shall meet the requirements 
set out in GB/T 14806.  
 
4.2 Energy efficiency grades of ventilating fans  
The energy efficiency for ventilating fans is divided into  three  grades, of which Grade I is the 
highest. Under set working conditions, the energy ef ficiency  values  for each grade of all types of 
ventilating fans shall meet the requirements set out in Table 1, Table 2, Table 3 and Table 4.  
Table 1 Energy efficiency grades for Type A ventilating fans  
Energy efficiency values  
m3 min-1 W-1 Specifications  
mm Types  
Grade I  Grade II  Grade III  
100 Shaded -pole 0.13 0.10 0.07 
Capacitive  0.24 0.20 0.15 150 
Shaded -pole 0.23 0.17 0.11 
Capacitive  0.38 0.32 0.25 200 
Shaded -pole 0.26 0.21 0.13 
250 Capacitive  0.46 0.40 0.34 
300 Capacitive  0.50 0.42 0.38 
350 Capacitive  0.51 0.43 0.32 
400 Capacitive  0.45 0.41 0.31 
450 Capacitive  0.41 0.36 0.30 
500 Capacitive  0.40 0.35 0.26 
Note: non-piped ceiling ventilating fans are not inclu ded. 
 GB XXXX -20XX  
- 5 -  
Table 2 Energy efficiency grades for Type A non-piped ceiling ventilati ng fans  
Energy efficiency values  
m3 min-1 W-1 Specifications  
mm Types  
Grade I  Grade II  Grade III  
150 Capacitive  0.20 0.16 0.11 
200 Capacitive  0.34 0.24 0.17 
250 Capacitive  0.42 0.32 0.25 
300 Capacitive  0.45 0.35 0.27 
 
Table 3 Energy efficiency grad es for Type B ventilating fans  
Energy efficiency values  
m3 min-1 W-1 Nominal air flow  
m3 min-1 Types  
Grade I  Grade II  Grade III  
 2.5  Capacitive  0.08 0.06 0.04 
> 2.5  4.0  Capacitive  0.10 0.08 0.06 
> 4.0  Capacitive  0.12 0.09 0.07 
Note: the energy efficiency values in this table are taken when the static pressure of the operating 
point is 25  Pa. 
 
Table 4 Energy efficiency grades  for Type D ventilating fans  
Energy efficiency values  
m3 min-1 W-1 Nominal air flow  
m3 min-1 Types  
Grade I  Grade II  Grade III  
 2.5  Capacitive  0.14 0.10 0.06 
> 2.5  10 Capacitive  0.18 0.13 0.11 
> 10 Capacitive  0.17 0.09 0.07 
Note 1: the energy effi ciency values in this table are taken when the static pressure of the operating 
point is 25  Pa. 
Note 2: For Type D Centrifugal ventilating fans, if the centrelines of the air -intake and air -outlet 
are coincident or parallel to one another, then the minimum  allowable values of energy efficiency 
shall be allowed to have a 15% tolerance.  
 
4.3 The minimum allowable values of energy efficiency for ventilating fans  
Under set working conditions, the minimum allowable values of energy efficiency for ventilating 
fans shall be Grade III of the energy efficiency grades set out in Table 1, Table 2, Table 3 and Table 
4. 
 
4.4 The reach minimum allowable values of energy efficiency for ventilating fans  
Under set working conditions, the minimum allowable values of energ y efficiency for ventilating GB XXXX -20XX  
- 6 - fans shall be the data set out in Table 5, Table 6, Table 7 and Table 8. These values shall come into 
force four years after the implementation of this Standard, and shall replace the minimum allowable 
values of energy efficien cy for ventilating fans mentioned in Section 4.3 above.  
 
Table 5 Minimum  allowable values of energy efficiency for Type A ventilating fans  
Specifications  
mm Types  Energy efficiency values  
m3 min-1 W-1 
100 Shaded -pole 0.09 
Capacitive  0.18 150 
Shaded -pole 0.15 
Capacitive  0.29 200 
Shaded -pole 0.16 
250 Capacitive  0.38 
300 Capacitive  0.40 
350 Capacitive  0.39 
400 Capacitive  0.39 
450 Capacitive  0.34 
500 Capacitive  0.30 
Note: non-piped ceiling  ventilating fans are not inclu ded. 
 
Table 6 Minimum allow able values of energy efficiency for Type A non-piped ceiling ventilating 
fans 
Specifications  
mm Types  Energy efficiency values  
m3 min-1 W-1 
150 Capacitive  0.15 
200 Capacitive  0.22 
250 Capacitive  0.28 
300 Capacitive  0.34 
 
Table 7 Minimum allowable val ues of energy efficiency for Type B ventilating fans  
Nominal air flow  
m3 min-1 Types  Energy efficiency values  
m3 min-1 W-1 
 2.5  Capacitive  0.05 
> 2.5  4.0 Capacitive  0.07 
> 4.0  Capacitive  0.08 
Note: the energy efficiency values in this Table are taken when the static pressure of the operating 
point is 25  Pa. 
 GB XXXX -20XX  
- 7 -  
Table 8 Reach minimum allowable values of energy efficiency f or Type D ventilating fans  
Nominal air flow  
m3 min-1 Types  Energy efficiency values  
m3 min-1 W-1 
 2.5  Capacitive  0.08 
> 2.5   10  Capacitive  0.12 
> 10 Capacitive  0.08 
Note 1: the energy efficiency values in this Table are the data taken when the stati c pressure of the 
operating point is 25  Pa. 
Note 2: For Type D Centrifugal ventilating fans, if the centrelines of the air -intake and air -outlet 
are coincident or parallel to one another, then the minimum allowable values of energy efficiency 
shall be allo wed to have a 15% tolerance.  
 
4.5 The values for evaluating  energy conservation in ventilating fans  
The values for evaluating  energy conservation in ventilating fans shall be the values set out for the 
energy efficiency Grade II in Table 1, Table 2, Tabl e 3 and Table 4.  
 
5 Test methods  
The input power shall comply with the relevant requirements set out in GB/T 14806 or GB/T 1236; 
the air flow, air pressure for Type A and Type B ventilating fans shall comply with the relevant 
requirements set out in GB/T 1 4806 or GB/T 1236; the air flow, air pressure for Type D ventilating 
fans shall comply with the relevant requirements set out in GB/T 1236; if there is any dispute 
regarding  the test result, then the test and method of determining the result shall comply w ith the 
methods stated in GB/T 1236.  
 
6 Inspection rules  
6.1 Inspection  of products leaving the factory  
6.1.1 The inspection scheme shall refer to GB/T 2828.1 and GB/T 2829, the inspection shall be 
conducted by the manufacturer’s quality inspection departm ent pursuant to  the relevant enterprise 
standards.  
6.1.2 If the inspection finds  that the energy efficiency value of a ventilating fan does not meet the 
requirements set out in Section 4.3, then this product shall not be permitted to leave the factory.  
 
6.2 Type inspection  
6.2.1 In any  of the following circumstances, a type inspection regarding  the minimum allowable 
value of energy efficiency shall be conducted:  
a) New product  produced on a trial basis ; 
b) Changes  in product design, technology or material s have clearly affected the product ’s 
performance.  
c) The quality and technology supervision department has requested an inspection.  
 
6.2.2 When carrying out  sampling for type inspection s, three ventilating fans  shall be accepted  each 
time, of which one sh all be used for the test and two for backup. If the test result does not satisfy the GB XXXX -20XX  
- 8 - specified requirements, then the two spare samples shall be tested . Unless the tested values of both 
spare samples satisfy the specified requirements, the product  lot in q uestion  shall be considered  
unqualified.  
 
7 Energy efficiency grade marking  
7.1 The manufacturer should, on the basis of the requirements stated in this Standard and the test 
result, determine the rated energy efficiency grade of the product.  
7.2 The manuf acturer shall state the rated energy efficiency grade of this product and its reference 
standard numbers in the document that permit s the product to leave the factory.