DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 1Draft Clause 10 (for Washing Machines) of the 
Code of Practice on Energ y Labelling of Products 
(April 2009 Version) 
(Please read in conjunction with  the existing Code of Practice on Energy Labelling of Products. 
Please see http://www.emsd.gov.hk/emsd/e_download/pe e/Combined_Code_of_Prac tice_(200805)(Final).pdf)
 
10. Energy Efficiency Labelling for Washing Machines 
10.1 Scope  
10.1.1.  Clause 10 of the Code, unless the Director provides otherwise, applies to a washing 
machine defined in the Ordinance, that is, the products specified in clauses 10.1.2 
and 10.1.3. 
10.1.2.  “Washing machine”, subject to clause 10.1.3 of the Code ⎯ 
(a) means an appliance for cleaning and rins ing of textiles using water which may 
also have a means of extracting exce ss water from the textiles for household 
use; 
(b) includes horizontal drum type, impelle r type and agitator type washing 
machines that ⎯ 
(i) use mains electricity as the primary power source; 
(ii) either have or do not have built-in dr yers for drying textiles by means of 
heating; and 
(iii) have a rated washing capacity not exceeding 7 kilograms. 
10.1.3.  “Washing machine” does not include washing machines which ⎯ 
(a) may also use other energy sources; or 
(b) have no spin extraction capability. 
10.2 Definitions  
This clause provides definitions of terms us ed in clause 10 of the Code.  Unless 
otherwise specified, the definitions adopted in the clause 10 follow those stipulated 
in the Ordinance, if any. DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 2agitator type means a type of washing mach ine in which the textiles are 
substantially immersed in the washing water, the mechanical action being produced by a device moving about or along its vertical ax is with a reci procating motion 
(an agitator).  This devi ce usually extends above the 
maximum water level. 
cycle means complete washing process, as defined by the 
programme selected, consisting of a series of different operations (wash, rinse, spin, etc.). 
horizontal drum type means a type of washing mach ine in which the textiles are 
placed in a horizontal or in clined drum and partially 
immersed in the washing water, the mechanical action being produced by rotation of th e drum about its axis, the 
movement being either c ontinuous or periodically 
reversed. 
IEC means International Electrotechnical Commission (the 
latest edition of the standard shall be followed for test methodology). 
impeller type means a type of washing mach ine in which the textiles are 
substantially immersed in the washing water, the mechanical action being produced by a device rotating about its axis continuously or which reverses after a number of revolutions (an impellor).  The uppermost point of this device is s ubstantially below the minimum 
water level. 
JIS means Japanese Industrial Standa rd (the latest edition of 
the standard shall be followed for test methodology). 
mains electricity means the electricity that is  supplied in Hong Kong at a 
voltage of 380/220V and a frequency of 50 Hz. 
rated washing capacity means the washing capacity of a washing machine as 
determined and declared by the manufacturer or importer of the washing machine in accordance with the standard and requirements specified in the Code. 
 DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 310.3 Classification of Washing Machines  
All washing machines regulated under the Ordinance are classified in accordance 
with Table 10.1 ⎯ 
Table 10.1 – Classification of Washing Machines 
Category Description 
1 Horizontal drum type washing machines 
2 Impeller type or agitator type washing machines 
 
10.4 Tests Required to be Carried Out  
The tests specified in this clause are requi red to be carried out, in accordance with 
IEC 60456 or JIS C 9606 or othe r equivalent internationa l standards approved by the 
Director, in order to find out the energy ef ficiency and performance characteristics of 
a washing machine.  The importer or manufac turer shall clearly i ndicate which test 
standard(s) they follow in testing their washing machines: 
(a) IEC 60456 applies to horizontal drum type  washing machines (i.e. category 1) 
(b) JIS C 9606 applies to impeller type or agitator type washing machines (i.e. 
category 2) 
A test report required to be submitted to the Director unde r section 6 of the 
Ordinance shall contain the results of these tests: 
(a) Energy consumption; 
(b) Water consumption; 
(c) Washing performance; and 
(d) Spin extraction performance. 
10.5 Test Methodology and Energy Efficiency Grading  
10.5.1.  Test Conditions 
In carrying out the tests as specified in cl ause 10.4 of the Code, the washing machine 
shall be tested at a voltage of 380/220V a nd a frequency of 50Hz with tolerances as 
specified in the relevant IEC or JIS st andards.  Moreover, unless the Director DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 4approves otherwise, the following te st conditions shall be followed: 
(a) In testing horizontal drum type washing machines (category 1), the 60 oC 
cotton programme shall be used without  pre-wash in accordance with the 
manufacturer’s instruction. 
(b) In testing impeller type or agitator type  washing machines (category 2), at the 
start of the test, the temperature of water shall be 30 ± 2 oC. 
In cases of washing machines without a ny programmes, the recommended times for 
washing, rinsing, and spin extracting opera tions shall be in accordance with the 
manufacturer’s instructions for the rated washing capacity to be tested. 
10.5.2.  Measurement of Energy Consumption 
The methodology for measuring energy c onsumption (kWh) shall be based on: 
(a) IEC 60456; 
(b) JIS C 9606; or 
(c) Other equivalent international st andards approved by the Director. 
The specified international standards (IEC or JIS) shall be referred to for actual 
performance requirements and procedural descriptions. 
The energy consumption shall be measured as follows: (i) For horizontal drum type washing machin e with built-in wate r heating device, 
the measured energy consumption (E) of  the washing machine shall include 
the energy consumptions of both the wa shing function (inc luding washing, 
rinsing and spin extraction processes) and the built-in water heating device for 
heating water.  This measured energy consumption (E) shall be shown on the 
energy label after it is calculated to  annual energy consumption based on 260 
washes / year operation. 
(ii) For horizontal drum type washing m achine without built-in water heating 
device, only the measured energy cons umption (E) of the washing machine 
shall be shown on the energy label af ter it is calculated to annual energy 
consumption based on 260 washes / year operation. 
(iii) For impeller type or agitator type wa shing machine, only the measured energy 
consumption (E) of the washing functi on (including washing, rinsing and spin 
extraction processes) shall be shown on th e energy label after it is calculated to 
annual energy consumption based on 260 washes / year operation. DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 5In cases of washing machines combined with  built-in dryers for drying textiles by 
means of heating, only the energy consumpti on (E) of the washing machine shall be 
measured and the drying function is excluded. 
10.5.3.  Measurement of Water Consumption 
The water consumption (litres/cycle) sh all be measured during the energy 
consumption test in accordance with IEC 60456, JIS C 9606, or other equivalent 
international standards approved by the Director. 
10.5.4.  Measurement of Washing Performan ce and Spin Extraction Performance 
The washing performance and spin extrac tion performance shall be measured and 
evaluated during the test pe riod in accordance with IEC 60456, JIS C 9606, or other 
equivalent international sta ndards approved by the Director. 
10.5.5.  Calculation of Specific Energy Consumption 
The specific energy consumption of a wash ing machine shall be calculated as 
follows: 
(a) For horizontal drum type washing machin e with built-in wate r heating device 
and impeller type or agitator type washing machine, the specific energy consumption is calculated as follows: 
E Specific Energy Consumption (E
sp) =Wr…..…………...……..(eq. 1)
where  E = measured energy consumption per cycle (kWh/cycle) 
Wr = rated washing capacity (kg) 
(b) For horizontal drum type washing m achine without built-in water heating 
device, the specific energy consump tion is calculated as follows: 
E + W hSpecific Energy Consumption (E sp) =Wr …………...……..(eq. 2)
where  E = measured energy consumption per cycle (kWh/cycle) 
Wr = rated washing capacity (kg) 
Wh = calculated hot water energy (kWh/cycle) 
The calculated hot water energy is the theoretical energy requirement for 
heating water from 15 oC to 60 oC and shall be calculated as follows: DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 6( V h x ( t h – 15 ) )Wh =860 ..………………….....(eq. 3)
where W h = the calculated hot water energy in kWh for the operation 
Vh = the volume of external hot wa ter used in litres during the 
operation 
th = the hot water inlet temperature in oC, i.e. 60 oC 
10.5.6.  Average Specific Energy Consumption 
The average specific energy consumption (E av) figures for washing machines are 
shown in Table 10.2. 
Table 10.2 – Average specific energy consumption 
Washing Machine 
Category Average Specific Energy Consumption 
(kWh/kg/cycle) 
Category 1 E av = 0.26 
Category 2 E av = 0.0264 
10.5.7.  Energy Efficiency Grading 
(a) Energy Consumption Index (I ε) 
The energy consumption index (I ε) of a washing machine is defined as the 
ratio of the specific energy consumption (E sp) of the washing machine to the 
average specific energy consumption (E av) (as found from the associated 
average specific energy consumption in clause 10.5.6 of the Code).  The 
indices are expressed in percentages.  Thus, within a category, a washing 
machine with a lower energy consump tion index (i.e. a lower percentage) 
consumes less energy than a washing machine with a higher energy consumption index (i.e. a higher percen tage).  The energy consumption index 
is calculated as follows ⎯ 
E
spEnergy Consumption Index (I ε) =Eavx 100% ..………………...(eq. 4)
where E sp = specific energy consumption as determined in clause 10.5.5 
Eav = average specific energy consum ption as determined from Table 
10.2 DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 7(b) Energy Efficiency Grading 
The energy efficiency grading of a wash ing machine shall be determined as 
shown in Table 10.3, with Grade 1 havi ng the best performance and Grade 5 
having the worst performance. 
Table 10.3 – Derivation of energy efficiency grades 
Energy Consumption Index: I ε (%) Energy Efficiency Grade  
Iε ≤ 80 1 
80 < Iε ≤ 95 2 
95 < Iε ≤ 110 3 
110 < Iε ≤ 125 4 
125 < Iε 5 
Note:  
In order to obtain Grade 1 to 4, the washing machin e concerned shall also 
meet all the performance requirements as  stipulated in clause 10.6.1(c), i.e. 
washing performance and spin extraction performance.  Only Grade 5 will be accorded if the washing machin e does not meet anyone of these 
performance requirements or I
ε > 125.  
An example illustrating the method on how to determine the energy efficiency 
grade of a washing machine is shown in Appendix 4A. (to be provided)  
10.6 Performance Requirements  
10.6.1.  In the test report submitted to the Director  under section 6 of the Ordinance, the 
results of the tests carried out in accor dance with IEC 60456 or JIS C 9606 or other 
equivalent international standards approve d by the Director shall show that the 
concerned model conforms with th e following performance requirements ⎯ 
(a) The measured energy consumption (kWh/c ycle) shall not be greater than the 
rated energy consumption by more than 15%. 
(b) The measured water consumption (litres/ cycle) shall not be greater than the 
rated water consumption by more than 15%. 
(c) The measured washing performance and measured spin extraction DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 8performance shall conform with the minimum requirements in accordance 
with the respective test standards as shown in Table 10.4 for Grade 1 to 4: 
Table 10.4 – Performance Requirements 
Category  Category 1 Category 2 
Performance RequirementsNote (1) 
Test Standard IEC 60456 JIS C 9606 
Washing PerformanceNote (2) q ≧ 0.7 C ≧ 0.55 
Spin Extraction PerformanceNote (3)RM ≦ 1.1 Water extracting 
efficiency ≧ 0.47 
Note:  
(1) Each of the performance shall be dete rmined in accordanc e with the test 
standard of the respective category. 
(2) The washing performance shall be de termined in accordance with the 
following equations (extracted from  the respective test standards): 
reftest
CCq=   or  
sr
DDC=  
where q = ratio of the average sum of the reflectance values 
Ctest = average sum of the reflectance values for the washing 
machine under test 
Cref = average sum of the reflectance values for the 
reference washing machine 
C = washability ratio D
r = washability by the washing machine under test 
Ds = washability by the reference washing machine 
For details on the definitions of th e parameters and their calculation, 
the respective test standard s shall be referred to. 
(3) The spin extraction performance shall be determined in accordance with DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 9the following equations (extracted fr om the respective test standards): 
MM MRMr−=   , or 
Mass of cloth in dry state Water extracting efficiency = Mass of cloth after water extraction
where RM = remaining moisture 
  M = the mass of the conditioned base load   M
r = the mass of the base load after spin extraction 
For details on the definitions of th e parameters and their calculation, 
the respective test standard s shall be referred to. 
(4) In order to obtain Grade 1 to 4, the washing machine concerned shall 
also meet all the above perform ance requirements, i.e. washing 
performance and spin extraction perfor mance.  Only Grade 5 will be 
accorded if the washing machine does not meet anyone of the above 
performance requirements or I ε > 125.  
10.6.2.  The rated energy consumption and rated water consumption as declared by the 
manufacturer or importer shall meet the requirements specified in clause 10.6.1 of 
the Code. 
10.7 Safety Requirements  
In addition to the energy efficiency perf ormance requirements, all washing machines 
shall comply with the Electrical Products  (Safety) Regulation, Chapter 406G of the 
Laws of Hong Kong, and the sa fety standards specified und er the Regulation, and all 
other legislations concerning the safety of the washing machines. 
10.8 Number of Samples to be Tested  
10.8.1.  For submission of product information of a model under section 6 of the Ordinance, 
subject to clause 10.8.2 of th e Code, a test report on one sample of the model shall 
be submitted. 
10.8.2.  However, if the test results of one sa mple indicate that the measured energy 
consumption is greater than the rated energy consumption by more than 10%, the 
test report shall include the tests of two sa mples of the same model.  In such case, 
each individual sample shall meet all the performance requirements in clause 10.6 of 
the Code.  Also, the information on the energy label shall be based on the test DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 10results of the tested sample with  a higher energy consumption index (I ε). 
10.9 Energy Label  
10.9.1.  The specification of the energy label for wa shing machines shown in Appendix 4B.  
After a reference number has been assigne d to a product model in the name of a 
specified person and included in the Direct or’s record, the specified person shall 
produce the energy label for hi s/her products of the listed  model showing the energy 
efficiency grade and associated information in accordance with the requirements in Appendix 4B. 
10.9.2.  (a) Subject to clause 10.9.2(c), the energy la bel is to be attached or affixed to a 
prominent position of the washing machin e and is to be clearly visible. 
(b) For the avoidance of doubt, if only part of the washing machine is being 
exhibited, the energy label is to be att ached or affixed to a prominent position 
of that part and is to  be clearly visible. 
(c) The energy label may be attached to th e washing machine or its packaging in a 
manner specified by the Director where th e Director has approved its being so 
attached. 
10.9.3.  The energy label shall be of cardboard, if it is to be attached as a swing tag, or be 
self-adhesive and shall be cut to the outlin e shown in Appendix 4B.  A trim or die 
cut margin of up to 2 mm around the energy label is acceptable. 
10.9.4.  The paper used for the energy label sha ll be durable with good wear and tear 
characteristics. 
10.10  Compliance
 
10.10.1.  During the compliance monitoring testing carr ied out by the Director, a listed model 
of washing machine will be accepted as conformance if the test results of a single sample of the listed model meet the following criteria: 
(a) The tested energy consumption (kWh/cycle ) shall not be greater than the rated 
energy consumption by more than 15%. 
(b) The tested water consumption (litres/cycle) shall not be greater than the rated 
water consumption by more than 15%. 
(c) The tested washing performance and test ed spin extraction performance shall 
conform with the minimum requirement s in accordance with the respective 
test standards as shown in Table 10.4 for Grade 1 to 4. DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 11(d) The tested energy efficiency grade meeting either one of the following: 
(i) The energy efficiency grade calculated in the compliance monitoring 
testing being equal to or better than the energy efficiency grade 
determined by the test results submitte d to the Director by the specified 
person; or 
(ii) If the energy efficiency grade calcu lated in the compliance monitoring 
testing being not equal to nor bette r than the energy efficiency grade 
determined by the test results submitted to the Director, the tested energy consumption index calculated in the compliance monitoring testing being not greater than 115% of th e measured energy consumption index 
calculated by the test results submitted to the Director. 
10.10.2.  The Director may remove from the record the reference number of a listed model of 
washing machine, if he has reasonable gr ounds to believe that the washing machine 
does not conform with the specified inform ation or a specified document, or their 
updates if any, submitted to the Direct or.  The specified person may provide 
explanation on the failure of a product to pass the compliance monitoring testing stipulated in clause 10.10.1 above and appl y for further testing of the concerned 
model for the Director’s consideration. DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 12
Appendix 4B 
Specification of Energy Label  
(1) The colour and design of the energy label mu st be as specified in the diagram below ─ 
 
- I
- I- II
- III 
- III - IV 
- V DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 13
 
(2) The dimensions of the energy label must be as specified in the diagram below ─ 
 
 DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 14(3) The energy label under section 1 of Appendix 4B is divide d into 5 rectangular areas 
(marked I, II, III, IV and V by the side of the label).  The information to be contained 
in each area of the energy label is specified  in column 2 of the following Table in 
relation to the area specified opposite to that information in column 1 of the Table. 
Area      Information to be contained  
 
I The energy efficiency grading of the model, calculated in accordance with the 
Code.  The head of the arrow containing the energy efficiency grade number is to be placed at the same level and has the same colour as the head of the relevant 
arrow on the left. 
 II The annual energy consumption, calcula ted by multiplying the measured energy 
consumption per cycle by an average of 260 washes per year, determined in accordance with the Code. 
 III The washing capacity, which is the rated washing capacity of the model, 
determined in accordance with the Code. 
 IV The water consumption, which is the measured water consumption per cycle, 
determined in accordance with the Code. 
 V The brand name, the product model, the reference number assigned by the 
Director, the year in which the referen ce number is assigned or, where the energy 
efficiency grading is calculated in acco rdance with the new calculation method 
under section 12 of this Ordinance, the y ear in which the ne w calculation method 
takes effect and the name of the in formation provider.  The information 
provider is the specified person who submitted the specified information to the Director. 
 
(4) The specifications for the font size of the words printed on the energy label are as 
follows
⎯ 
Description on the Energy Label  
 Font and font size  
ENERGY LABEL 
 31 point Italic Kabel Ult BT (English) 
能源標籤  
 24 point DFHeibold (Chinese) DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 15Description on the Energy Label  
 Font and font size  
more efficient 效益較高  
less efficient 效益較低  
 14 point Helvetica Neue Bold (English) 
14 point DFHeiBold (Chinese) 
Grade on the left (1, 2, 3, 4, 5) 
 15 point Helvetica Neue Bold (English) 
Grade on the right –  
The word “Grade” The figure “1” 
The word “ 級” 
  
11 point Helvetica Neue Bold Condensed (English)
35.5 point Helvetica Neue Bold (English) 9.5 point DFHeiBold (Chinese) 
Annual Energy Consumption 
(kWh)(Washing) 
每年耗電量（千瓦小時） （洗滌）  
 11.5 (8) point Helvetica Roman (English) 
10 (8) point DFHeiMedium (Chinese) 
Based on 260 washes/yr operation 
以每年使用 260次計算  
 7 point Helvetica Roman (English) 
7 point DFHeiMedium (Chinese) 
Washing Capacity (kg) 
洗衣量（公斤）  10 point Helvetica Roman (English) 
10 point DFHeiMedium (Chinese)  
Figures of annual energy consumption and washing capacity on the right  20 point Helvetica Medium 
Water Consumption (litre) 
耗水量（公升）  
 10 point Helvetica Roman (English) 
10 point DFHeiMedium (Chinese) 
Figure of water consumption on the right 
 10 point Helvetica Roman (English) 
Washing Machine 
洗衣機  
 9 point Helvetica Bold (English) 
9 point DFHeiMedium (Chinese) 
Brand 
Model Reference Number / Year Information Provider   
 9 point Helvetica Roman (English) 
 DRAFT 
200904 COP(Washing Machine)(Draft)(WTO).doc 16Description on the Energy Label  
 Font and font size  
品牌：  
型號：  
參考編號  / 年份：  
資料提供者：  
  
 9 point DFHeiMedium (Chinese) 
Characters of brand, model, reference 
number, year and information provider on the right  9 point Helvetica Roman (English) 
7.5 point DFHeiMedium (Chinese) 
機電工程署  
EMSD and its logo 16 point Monotype Yuen (Chinese) 
17.9 point Futura Bold Condensed (English) 
 DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 1Draft Clause 11 (for Dehumidifiers) of the 
Code of Practice on Energ y Labelling of Products 
(April 2009 Version) 
(Please read in conjunction with  the existing Code of Practice on Energy Labelling of Products. 
Please see http://www.emsd.gov.hk/emsd/e_download/pe e/Combined_Code_of_Prac tice_(200805)(Final).pdf)
 
11. Energy Efficiency Labelling for Dehumidifiers 
11.1 Scope  
11.1.1.  Clause 11 of the Code, unless the Dir ector provides otherwise, applies to a 
dehumidifier defined in the Ordinance, th at is, the products specified in clauses 
11.1.2 and 11.1.3. 
11.1.2.  “Dehumidifier”, subject to clause 11.1.3 of the Code ⎯ 
(a) means an encased assembly for rem oving moisture from its surrounding 
atmosphere; 
(b) includes self-contained, electrically operated and mechanically-refrigerated 
dehumidifiers that ⎯ 
(i) use mains electricity as the primary power source; 
(ii) operate by using the vapour compression cycle; 
(iii) consist of a refrigerated surface (e vaporator) that condenses moisture 
from the atmosphere; a refrigerating system, including an electric motor; an air circulating fan; and a drain sy stem for collecting and/or disposing 
of the condensate; and 
(iv) have a rated dehumidifying capacity  not exceeding 87 litres per day. 
11.1.3.  “Dehumidifier” does not include dehumidifiers which ⎯ 
(a) may also operate by using desiccant materials; or 
(b) are room air conditioners ha ving dehumidifying function. 
11.2 Definitions
 
This clause provides definiti ons of terms used in clause  11 of the Code.  Unless 
otherwise specified, the definitions adopted in the clause 11 follow those stipulated DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 2in the Ordinance, if any. 
ANSI / AHAM means American National Standards Institute / 
Association of Home Applianc e Manufacturers (the latest 
edition of the standard shall be followed for test methodology). 
CAN/CSA means Canada / Canadian St andards Association (the 
latest edition of the standard shall be followed for test methodology). 
dehumidifying capacity means a measure of the abi lity of a dehumidifier to 
remove moisture from its surrounding atmosphere, measured in litres of moisture removed per 24 hours of period. 
energy factor means the energy efficiency of a dehumidifier that is 
measured in litres of wate r removed per kilowatt-hour 
(kWh) of energy consumed at standard test condition. 
mains electricity means the electricity that is  supplied in Hong Kong at a 
voltage of 380/220V and a frequency of 50 Hz. 
rated dehumidifying 
capacity means the dehumidifying capac ity of a dehumidifier as 
determined and declared by the manufacturer or importer 
of the dehumidifier in accord ance with the standard and 
requirements specified in the Code. 
vapour compression 
cycle means a mechanism employed by a dehumidifier 
throughout which the refrigerant undergoes alternate compression and expansion to  achieve the cooling or 
heating function. 
11.3 Classification of Dehumidifiers
 
All dehumidifiers regulated under the Ordina nce are classified in accordance with 
Table 11.1 ⎯ DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 3Table 11.1 – Classification of Dehumidifiers 
Classification Water Removal Capacity 
Under Test Conditions (Litres / Day)
Standard Capacity Dehumidifier Up to 35 litres 
High Capacity Dehumidifier From 35 litres to 87 litres 
 
11.4 Tests Required to be Carried Out  
The tests specified in this clause are re quired to be carried out, in accordance with 
ANSI/AHAM DH-1 or other equivalent in ternational standards approved by the 
Director, in order to find out the energy ef ficiency and performance characteristics of 
a dehumidifier.  A test report required to be submitted to the Director under section 6 of the Ordinance shall contai n the results of these tests: 
(a) Dehumidifying capacity test for m easuring dehumidifying capacity and 
corresponding energy consumption; and 
(b) Maximum operating conditions test. 
11.5 Test Methodology and Energy Efficiency Grading
 
11.5.1.  Test Condition for the Determination of Dehumidifying Capacity 
With respect to the measurement of the dehumidifying capacity of a dehumidifier, 
the requirements of ANSI/AHAM DH-1 sta ndard test condition as shown in Table 
11.2 shall apply. 
Table 11.2 – Test condition for the det ermination of dehumidifying capacity 
Parameter Standard test conditions 
Dry-bulb temperature 26.7oC 
Wet-bulb temperature 20.9oC 
Relative humidity 60% 
 
11.5.2.  Measurement of Dehumidifying Ca pacity and Energy Consumption 
The testing methodology for measurement of the dehumidifying capacity and the 
corresponding energy consumption of a dehumidifier shall follow ANSI/AHAM DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 4DH-1 or other equivalent in ternational standards appr oved by the Director.  The 
dehumidifier shall be tested at a voltage  of 380/220V and a frequency of 50Hz with 
tolerances as specified in the standard. 
11.5.3.  Determination of Dehumidifying Capacity 
The dehumidifying capacity of a dehumidifier  shall be determined by using the test 
results of the test as measured in accord ance with clause 11.5.2 of the Code and the 
relevant clause of ANSI /AHAM DH-1.  In conversion of the dehumidifying 
capacity to litres per day, reference sha ll be made to the relevant clause of 
CAN/CSA-C749. 
11.5.4.  Determination of Energy Factor (EF) 
The energy factor (litres/kWh) is used to measure the energy efficiency of a 
dehumidifier at the test condition and is calculated as follows ⎯ 
VEnergy Factor (EF) = E……………………………………...……..(eq. 1)
Where V = amount of water removed (litres) measured  in dehumidifying capacity 
test. 
E = corresponding energy consumption (kWh) measured in dehumidifying 
capacity test. 
11.5.5.  Energy Efficiency Grading 
The energy efficiency grade of the dehumid ifier shall be determined as shown in 
Table 11.3, with Grade 1 having the best performance and Grade 5 having the worst 
performance. DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 5Table 11.3 – Derivation of energy efficiency grades 
Energy Factor (EF) (litres/kWh) Rated 
dehumidifying capacity (D
R) 
(litres/day) Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 
< 10 1.60  EF≦1.35  EF ≦
< 1.60 1.15  EF ≦
< 1.35 1.00  EF ≦
< 1.15  EF < 1.00
10 ≤ DR < 15 1.85  EF≦1.55  EF ≦
< 1.85 1.35  EF ≦
< 1.55 1.20  EF ≦
< 1.35  EF < 1.20
15 ≤ DR < 20 2.00 ≦ EF1.65 ≦ EF 
< 2.00 1.45 ≦ EF 
< 1.65 1.25  EF ≦
< 1.45  EF < 1.25
20 ≤ DR < 25 2.10  EF≦1.75  EF ≦
< 2.10 1.55  EF ≦
< 1.75 1.35  EF ≦
< 1.55  EF < 1. 35
25 ≤ DR < 35 2.35  EF≦2.00  EF ≦
< 2.35 1.70  EF ≦
< 2.00 1.50  EF ≦
< 1.70  EF < 1.50
35 ≤ DR ≤ 87 3.30 ≦ EF2.75 ≦ EF 
< 3.30 2.35 ≦ EF 
< 2.75 2.10  EF ≦
< 2.35  EF < 2.10
Note:  
In order to obtain Grade 1 to 4, the de humidifier concerned shall also pass the 
maximum operating conditions test as stipul ated in clause 11.6.1(c).  Only Grade 5 
will be accorded if the dehumidifier does not pass the maximum operating conditions test or the energy  factor falls into Grade 5. 
An example illustrating the method on how to  determine the energy efficiency grade 
of a dehumidifier is shown in Appendix 5A. (to be provided)  
11.6 Performance Requirements
 
11.6.1.  In the test report submitted to the Director  under section 6 of the Ordinance, the 
results of the tests carried out in acco rdance with the relevant clauses of 
ANSI/AHAM DH-1 or other equivalent in ternational standards approved by the 
Director shall show that the concer ned model conforms with the following 
performance requirements ⎯ DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 6(a) The measured dehumidifying capacity shall not be less than 95% of the rated 
dehumidifying capacity. 
(b) The measured energy consumption shall not be greater than  105% of the rated 
energy consumption. 
(c) The dehumidifier shall pass the maxi mum operating conditions test.  Any 
dehumidifier failing the maximum opera ting conditions test can only obtain 
Grade 5. 
11.6.2.  The rated dehumidifying capacity and the rated energy consumption as declared by 
the manufacturer or importer shall meet the requirements specified in clause 11.6.1 
of the Code. 
11.7 Safety Requirements  
In addition to the energy efficiency perf ormance requirements, all dehumidifiers 
shall comply with the Electrical Products  (Safety) Regulation, Chapter 406G of the 
Laws of Hong Kong, and the sa fety standards specified und er the Regulation, and all 
other legislations concerning the safety of the dehumidifiers, e.g. the Gas Safety 
Ordinance and its subsidiary legislations, as appropriate. 
11.8 Number of Samples to be Tested  
For submission of product information of a model under section 6 of the Ordinance, 
a test report on one sample of the model shall be submitted. 
11.9 Energy Label  
11.9.1.  The specification of the energy label for dehumidifier is show n in Appendix 5B.  
After a reference number has been assigne d to a product model in the name of a 
specified person and included in the Direct or’s record, the specified person shall 
produce the energy label for hi s/her products of the listed  model showing the energy 
efficiency grade and associated information in accordance with the requirements in Appendix 5B. 
11.9.2.  (a) Subject to clause 11.9.2(c), the energy la bel is to be attached or affixed to a 
prominent position of the dehumidifier and is to be clearly visible. 
(b) For the avoidance of doubt , if only part of the dehum idifier is being exhibited, 
the energy label is to be attached or af fixed to a prominent position of that part 
and is to be clearly visible. 
(c) The energy label may be attached to the dehumidifier or its packaging in a DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 7manner specified by the Director where th e Director has approved its being so 
attached. 
11.9.3.  The energy label shall be of cardboard, if it is to be attached as a swing tag, or be 
self-adhesive and shall be cut to the outlin e shown in Appendix 5B.  A trim or die 
cut margin of up to 2 mm around th e energy label is acceptable. 
11.9.4.  The paper used for the energy label sha ll be durable with good wear and tear 
characteristics. 
11.10  Compliance  
11.10.1.  During the compliance monitoring testing carr ied out by the Director, a listed model 
of dehumidifier will be accepted as conformance if the test results of a single sample 
of the listed model meet the following criteria: 
(a) The tested dehumidifying capacity shall not be less than 90% of the rated 
dehumidifying capacity. 
(b) The tested energy consumption shall not be greater than 110% of the rated 
energy consumption. 
(c) The dehumidifier shall pass the maximum operating conditions test for Grade 
1 to 4. 
(d) The tested energy efficiency grade meeting either one of the following: 
(i) The energy efficiency grade calculated in the compliance monitoring 
testing being equal to or better than the energy efficiency grade 
determined by the test results submitte d to the Director by the specified 
person; or 
(ii) If the energy efficiency grade calcu lated in the compliance monitoring 
testing being not equal to nor bette r than the energy efficiency grade 
determined by the test results submitted to the Director due to decrease in energy factor, the tested energy f actor calculated in the compliance 
monitoring testing being not less than 90% of the measured energy factor 
calculated by the test results submitted to the Director. 
11.10.2.  The Director may remove from the record the reference number of a listed model of 
dehumidifier, if he has reasonable grounds to believe that the dehumidifier does not 
conform with the specified information or a specified document, or their updates if 
any, submitted to the Director.  The specified person may provide explanation on the failure of a product to pass the complian ce monitoring testing stipulated in clause DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 811.10.1 above and apply for further testing of  the concerned model for the Director’s 
consideration. DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 9
Appendix 5B 
Specification of Energy Label  
(1) The colour and design of the energy label mu st be as specified in the diagram below ─ 
   
- I
- I- II
- III 
- III - IV 
- V DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 10
 
(2) The dimensions of the energy label must be as specified in the diagram below ─ 
 
 DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 11(3) The energy label under clause 1 of Appendix 5B is divided into 5 rectangular areas 
(marked I, II, III, IV and V by the side of the label).  The information to be contained 
in each area of the energy label is specified  in column 2 of the following Table in 
relation to the area specified opposite to that information in column 1 of the Table. 
Area      Information to be contained  
 
I The energy efficiency grading of the model, calculated in accordance with the 
Code.  The head of the arrow containing the energy efficiency grade number is to be placed at the same level and ha s the same colour as the head of the 
relevant arrow on the left. 
 II The annual energy consumption, calcula ted by multiplying the measured power 
consumption at 26.7
oC and 60% relative humidity by an average of 450 hours 
per year, determined in accordance with the Code. 
 III The dehumidifying capacity, which is the measured amount of water removed 
in 24 hours, determined in accordance with the Code. 
 IV The energy factor, which is the m easured amount of water removed per 
kilowatt-hour, determined in accordance with the Code. 
 V The brand name, the product model, the reference number assigned by the 
Director, the year in which the reference number is assigned or, where the energy efficiency grading is calculated in accordance with the new calculation method under section 12 of this Ordi nance, the year in which the new 
calculation method takes effect and the na me of the information provider.  The 
information provider is the specified person who submitt ed the specified 
information to the Director. 
 
(4) The specifications for the font size of the words printed on the energy label are as 
follows⎯ 
Description on the Energy Label
 
 Font and font size  
ENERGY LABEL 
 31 point Italic Kabel Ult BT (English) 
能源標籤  
 24 point DFHeibold (Chinese) DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 12Description on the Energy Label  
 Font and font size  
more efficient 效益較高  
less efficient 效益較低  
 14 point Helvetica Neue Bold (English) 
14 point DFHeiBold (Chinese) 
Grade on the left (1, 2, 3, 4, 5) 
 15 point Helvetica Neue Bold (English) 
Grade on the right –  
The word “Grade” The figure “1” 
The word “ 級” 
  
11 point Helvetica Neue Bold Condensed (English)
35.5 point Helvetica Neue Bold (English) 9.5 point DFHeiBold (Chinese) 
Annual Energy Consumption (kWh) 
每年耗電量（千瓦小時）  
 11.5 (8) point Helvetica Roman (English) 
10 (8) point DFHeiMedium (Chinese) 
Based on 450 hours/yr operation at 26.7
oC 
and 60% relative humidity 
以在 26.7攝氏度及 60%相對濕度下每年使
用450小時計算  
 7 point Helvetica Roman (English) 
7 point DFHeiMedium (Chinese) 
Dehumidifying Capacity (litre/day) 
抽濕量（公升 /天）  10 point Helvetica Roman (English) 
10 point DFHeiMedium (Chinese)  
Figures of annual energy consumption and dehumidifying capacity on the right  20 point Helvetica Medium 
Energy Factor (litre/kWh) 
能源效率（公升 /千瓦小時）  
 10 point Helvetica Roman (English) 
10 point DFHeiMedium (Chinese) 
Figure of energy factor on the right 
 10 point Helvetica Roman (English) 
Dehumidifier 
抽濕機  
 9 point Helvetica Bold (English) 
9 point DFHeiMedium (Chinese) DRAFT  
200904 COP(Dehumidifier)(Draft)(WTO).doc 13Description on the Energy Label  
 Font and font size  
Brand 
Model Reference Number / Year Information Provider   
 9 point Helvetica Roman (English) 
 
品牌：  
型號：  
參考編號  / 年份：  
資料提供者：  
  
 9 point DFHeiMedium (Chinese) 
Characters of brand, model, reference 
number, year and information provider on the right  9 point Helvetica Roman (English) 
7.5 point DFHeiMedium (Chinese) 
機電工程署  
EMSD and its logo 16 point Monotype Yuen (Chinese) 
17.9 point Futura Bold Condensed (English)