KUWAITI  STANDARD  KWS  1893 /2018 
1 
  
 
 
الهيئة العامة للصناعة 
PUBLIC AUTHORITY FOR INDUSTRY (PAI)  
 
 
KWS 1893 :2018  
 
متطلبات بطاقات كفاءة الطاقة والحدود الدنيا 
لكفاءة استهلاك الطاقة لمكيفات الهواء ذات السعات 
 حتى 70,000 و.ح.ب./ساعة 
ENERGY EFFICIENCY  LABELLING  
AND  MINIMUM  ENERGY  PERFORMANCE  
REQU IREMENTS  
FOR DX  AIR-CONDITIONERS  UP TO 70,000  Btu/h  
 KUWAITI  STANDARD  KWS  1893 /2018 
2 
 Table of Contents  
1. SCOPE  ................................ ................................ ................................ ................................ ..........  4 
2. OBJECTIVE  ................................ ................................ ................................ ................................ ... 4 
3. NORMATIVE  REFERENCES  ................................ ................................ ................................ ...........  4 
4. TERMS  AND  DEFINITIONS ................................ ................................ ................................ ............  5 
5. REGISTRATION  REQUIREMENTS  ................................ ................................ ................................ .. 7 
6. MEPS  ................................ ................................ ................................ ................................ ...........  8 
7. NAME  PLATE  AND  INSTRUCTION  SHEET  OR MANUAL  ................................ ................................  9 
8. ENERGY  RATING  CLASSIFICATIO N ................................ ................................ .............................  10 
9. ENERGY  LABELLING  REQUIREMENTS  ................................ ................................ ........................  11 
 
  KUWAITI  STANDARD  KWS  1893 /2018 
3 
 تقديم 
 
 
قامت الهيئة العامة للصناعة ضمن برنامج عمل اللجنة الفرعية لكفاءة طاقة المكيفات والمنبثقة من اللجنة الوطنية لقطاع 
المواصففات الكهرباييفة واكلكورونيفة باعفاام المواصففة الفنيفة الكوقويفة  قف   2018   1893 " موطلبفات بطاقفات اففاءة
الطاقة والحاوم الانيا لكفاءة اسوهلاك الطاقة لمكيفات الهواء".  
وقففا اعومففات اففوا المواصفففة الايحففة ينيففة للراميففة يفف  القففرا  الففو ا    قفف   2018  \ 15والصففام  بوففا ق 10 قوليففو
2018. 
 
Forward  
The Public Authority for Industry (PAI), through the program of energy efficiency of air 
conditioners subcomm ittee of (The National Committee for the Sector of Electrical and 
Electronics Standards) prepared the Kuwaiti Technical Standard Number  1893:2018 
“Energy  Efficiency Labelling Requirements and the Minimum Energy Performance 
Standard (MEPS) requirements for DX air conditioners ” KUWAITI  STANDARD  KWS  1893 /2018 
4 
 1. SCOPE  
This standard specifies the requirements of 1) energy efficiency labelling and 2) Minimum 
Energy Performance Standard (MEPS) for air -cooled DX air conditioners  with capacities 
including and up to 70 ,000 Btu/h . It is applied to u nits designed to operate in AC single 
phase circuits of 240 V , and three phase circuits of 415 V with a frequency of 5 0 Hz.  
2. OBJECTIVE  
The objective  of  this Standard  is to: 
a) Provide  detailed  information  on the performance  and energy  labelling 
requirements  which an air conditioning  appliance  has to meet  in order  to 
carry  a valid  energy  efficiency  label;  
b) Provide  detailed  information  on the performance  requirements  which  an air 
conditioning  appliance  has to achieve  in order  to meet  minimum  energy 
performance  standard  requirements.  
3. NORMATIVE  REFERENCES  
The following  normative  references  are applied, taking in account the differences in this 
standard : 
 MEW/R -6 “Energy Conservation Program, Code of Practice - Kuwait ”. 
 GSO ISO 5151 "N on-Ducted Air -Conditioners a nd Heat Pumps – Testing and 
Rating for  Performance".  
 GSO ISO 13253 “Ducted Air-Conditioners and Air-to-Air Heat Pumps  – Testing 
and Rating  for Performance ”. 
  KUWAITI  STANDARD  KWS  1893 /2018 
5 
 4. TERMS  AND  DEFINITIONS  
For the purposes  of this standard,  the terms  and definitions  given  in GSO/ KWS  
Standards  mentioned  in Section 3  and those  below  are considered.  
Ducted  air conditioners  
An air-conditioner  model  configuration  where  the indoor  side is situated  remote  
to the space  to the conditioned.  The conditioned  air is supplied  or extracted  via 
a duct.  
DX air -conditioners  
Air-conditioners that direclty cools the space by boiling the refrigerant in the 
evaporator, and condenser is cooled by ambient air (e.g.: mini -split unit, ducted 
split units, VRF, packaged units, etc.). 
Non-ducted  air-conditione r 
An air-conditioner  model  configuration  where  the indoor  side is situated  partly  
or wholly  within  the space  to be conditioned.  The conditioned  air is supplied  
and extracted  directly  to and from  the conditioned  space.  
Package system  
A self-contained  air-conditioner  with all its components assembeled into one 
casing. It is usually installed outside of the conditioned space.  
Rated  capacity  
The nominal  rated capacity  claimed  by the manufacturer  of an 
air-conditioner  model  determined  as follows:  
- Rated total cooling capacity  As claimed  by the manufacturer  for 
temperature  condition  T1 and  T4. (Units:  Btu/h).  
The rated  capacity  at T4  appears  on the energy  label  as ‘Capacity  Output ’  
(Units:  Btu/h).  
Rated  power  
Effective  power input of the air-conditioner  model as claimed  by the 
manufacturer  during  the determination  of rated cooling  capacity.  
(Units:  W or kW.) 
Split system  
An air-conditioner  with separate  indoor and outdoor  components  that are 
connected  with refrigerant  piping.  The indoor  unit usually  lies within  the 
conditioned  space  and may be installed  or portable/mobile.  
Star rating  
The number  of stars  displayed  on the energy  effecincy  label. Available  stars  are KUWAITI  STANDARD  KWS  1893 /2018 
6 
 between  a minimum  of one and a maximum  of four for window A/C type  
and seven stars for other A/C t ypes. It is considered  as an indication  of 
the claimed  energy  efficiency  of a model  at rated conditions.  A higher  star 
rating  indicates  a higher  energy  efficiency.  It is derived  from the tested  
EER  . 
T4 
Test conditions where the outdoor design temperature is (48ºC DB T &26.9ºC 
WDT) & the indoor design temprature is (26. 6ºC DBT & 19.4 ºC WBT)  
 KUWAITI  STANDARD  KWS  1893 /2018 
7 
 5. REGISTRATION  REQUIREMENTS  
5.1 Information  regarding  registration  requirement  for energy  labelling  and 
MEPS  are available  in Standarization & Metrology Department in Public Authority for 
Industry (PAI).  
5.2 For the energy  efficiency labelling registration  of an air-conditioner ,  the following shall be 
submitted for the registration  body:  
a) Application form inaccordance  with Appendix A  
b) Test report  in accordance  with the most  recent  editions  of GSO ISO 5151 or GSO ISO 
13253, as applicable  taking in account the differences  mentioned  in this standard . 
 
5.3 Energ y Label  V alidity  (Acceptable Tolerance)  
The energy  label shall be accepted  as valid  when  a single  sample  of an 
appliance  or unit model,  tested  for an initial  screening  test, meets  the followin g 
criteria  for cooling,  as applicable:  
a) Tested  effective  power  input (kW) ..……… ……...... …….≤ 1.05  x rated  power.  
b) Tested cooling capacity (Btu/hr) …………………….. 0.95 x rated  capacity.  
c) Tested  EER  ……………………………….………….…….. 0.95  x rated  EER.  
d) Tested  power rating  (kW/RT) …………………….…….  ≤1.05  x rated  kW/RT.  
e) Tested  voltage (V)  ................. 240V for single  phase /415V for three phase 6% 
f) Tested  frequency (Hz)  ………………………………………………….  50 Hz. 
g) Testing  conditions  (T1,T4)...................  (refer  to Appendix B for T4 requirments ). 
 KUWAITI  STANDARD  KWS  1893 /2018 
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 6. MEPS  
The minimum  energy  performance  standard  MEPS  value  for the air conditioner  in the 
scope  of this standard  shall be greater  than or equal  to the value  of Energy  Effeicency  Ratio  
(EER),  When  calculating  the cooling  capacity and EER for both rated and tested 
values  at testconditions  (T1) and  test condition (T4 ) as follows:  
 
Table 1: MEPS value s for different types of  the air conditioner s at T1 & T4 test conditions  
 
Air conditioner 
type Rated Cooling Capacity (CC) 
(Btu/h) at test condition ( T4) EER Value 
((Btu/h)/W)  Power rating per 
Refrigeration 
Tonnage  PRT 
(kW/RT)  
T1 T4 T1 T4 
Windo w type  CC < 24 ,000 9.7 6.98 1.24 1.65 
24,000 ≤ CC  8.5 6.12 1.41 1.95  
 Other types  CC ≤  70,000 11.5 8 1.04 1.5 
Note : The MEPS requirements will be revised  every 3 to 5 years to ensure alignment with 
international standards . 
  KUWAITI  STANDARD  KWS  1893 /2018 
9 
 7. NAME  PLATE  AND  INSTR UCTION  SHEET  OR MANUAL  
In addition  to any information  needed  to be displayed  on the air-conditioner  
unit,  the following  information  shall  be marked  on the name  plate  of the air-
conditioner,  in Arabic  or English  or both. The marking  shall not be on a 
detach able part of the unit and shall  be indelible,  durable  and easily  legible.  
Any information  related  energy  performance  added  shown  in any part of the air-
conditioner  unit or packaging  shall  not have  any ambiguity  or lead to miss 
understand  of the performance  of the unit.  
7.1 The information  on the name plate in Arabic  or English  or both shall include  at least: 
– Manufacturer ’s name  and/or  trademark.  
– Country  of origin.  
– Manufacturer ’s model  or type reference . 
– Serial  number  of the unit.  
– Rated  voltage  or rated  voltage  range  (V olts).  
– Rated  frequency  (Hz).  
– For each  of cooling  test conditions  T1 and T4 according  to the standard 
stated  in Section  3, as applicable:  
 Rated  current  in Amperes.  
 Rated  power  input  in watts  or kilowatts.  
 Nominal  cooling  capacity  in Btu/h  (and  any units of kW or 
Kcal/h)  when tested  according  to conditions  stated  in Section 3.  
 Rated  Energy  Efficiency  Ratio  (EER)  in (Btu/hr)/W.  
– Refrigerant  used  and mass  of refrigerant  charge  in kg. 
7.2 An instruction  sheet  or manual  in both Arabic  and English  shall be delivered  
with each air-conditioner,  including  the following  information:  
– The information  specified  in Section 7 .1. 
– Dimensions  of the unit in (mm)  and its method  of mounting.  
– Minimum  clearances  between  the various  parts  of the unit and the 
surrounding  framewo rk in (cm or mm).  
– Instructions  necessary  for the correct  operation  of the unit and any 
special  precautions  to be observed  to ensure  its safe use and maintenance.  
– Instructions  for packing  and unpacking  the unit.  
– Total weight  of the unit including the refreg erant charge.  
– Any other  additional  information.  KUWAITI  STANDARD  KWS  1893 /2018 
10 
 8. ENERGY  RATING  CLASSIFICATION  
8.1 The star  rating  is used for the energy  efficiency  labeling  of products specified within the 
scope of this standard (as defined in Section 1).  
8.2 The energy efficiency  class is then determined  in accordance  with the 
following  tables, where the EER (Energy  Efficiency  Ratio) is determined  in 
accordance  with the test procedures  of the normative refernceses mentioned in 
Section  3 at condition  T4. 
 
 
Table 2: Star rating for window type air conditioners  
 
Star Rating  Power Rating Per 
Refrigeration Ton 
(kW/RT) * EER limits  
(Btu/h)/W  
 1.80 ≥ PR T >  1.70 6.67 ≤ EER < 7.05 
 1.70 ≥ PR T > 1.60 7.05 ≤ EER < 7.5 0 
 1.60 ≥ PR T > 1.50  7.50 ≤ EER < 8.00  
 1.50 ≥ PR T  8.00 ≤ EER  
* Testing at T4  
 
Table 3:  Star rating for all types of air conditioners except window type  
 
Star Rating  Power Rating Per 
Refrigeration Ton 
(kW/RT) * Energy Efficiency 
Ratio (EER)  
(Btu/h)/W  
 1.50 ≥ PRT  1.45 8.00 ≤ EER < 8.28  
 1.45 ≥ PRT > 1.40  8.28 ≤ EER < 8.57  
 1.40 ≥ PRT > 1.35  8.57 ≤ EER < 8.89  
 1.35 ≥ PRT > 1.30  8.89 ≤ EER < 9.23  
 1.30  ≥ PRT > 1.25  9.23 ≤ EER < 9.60  
 1.25  ≥ PRT > 1.20  9.60 ≤ EER < 10.00  
PRT ≤ 1.20  EER ≥ 10.00  
*Testing at T4  
 
  KUWAITI  STANDARD  KWS  1893 /2018 
11 
 9. ENERGY  LABELLING  REQUIREMENTS  
8.1 Information  and Values  Contained /Enclosed/included  in the Energy Effic iency  Label  
All Arabic text shall be in font “Simplified  Arabic ”, size ###   No Italic, bold, or 
underlined text shall be used. 
“ The font should  be written  “Simplified  Arabic ” for Arabic  and “Times  New 
Roman ” for English  as illustrated  in the Figures  1 to 3 . Fields (a) through (e) 
illustrated in Figure  2 shall  comply  with  the following  requirements:  
(a) Field   a This band  shall terminate  according  to the appliance ’s star 
Rating .  
(b) Field   b This field shall include the regestration number and regestrati on 
certificate issuance date.  
(c) Field c This field shall include  the tested value of energy efficienty ratio 
(EER) for the appliance  at T4 condition  
(d) Field   d This field  shall include the power rating per refrigeration Ton (kW/RT) 
at T4 condition.  
(e)  Field  e The brand  name  shall  be inserted  here. The  wording   should  be  
complete  and concise. They should  have normal   spacing  of letter,  line 
and word  in the area allowed.  
(f)    Field f      The model number  shall  be inserted  here. The  wording  
 shoul d be complete  and concise. In the case of split system, 
where  the indoor  and outdoor  components  have  different  model  
numbers,  model  numbers  for both  shall  appear  on the label.  
(g) Field g    This field  shall include the total power for the air -conditioner at T4 
condition.  
(h)    Field h  This field shall include the applicable refregerant type  used for this 
air-conditioner .  
  
(i) Field i    This field shall include the contry of origion  
(j)      Field j    This field shall include  the total rated  cooling  capacity  (output  
capacity)  based on the rated input power at T4 condition.  
  
(k) Field k  This field shall include the compressor type.  
  KUWAITI  STANDARD  KWS  1893 /2018 
12 
  
8.2 Sample  Labels  
Example  of printed  energy  label  for air-conditioning  appliances  are shown  in 
Figures  1 to 3 . 
8.3 Label Dimensions  
Figure  3 shows  the dimensions  of label.  
8.4 Placement  of Energy  Labels  
The label  shall be clearly located for visual site and adhered,   on the right  
front  of the unit . for ease of custom procedures, an  additional label may be 
attached to th e exterior of the packaging.  
The label  shall be existed  on the unit when the unit is removed  from its  
packaging  for display  purposes , and s plit units shall have a label on both parts . 
8.5 Material  and Shape  of Energy  Labels  
The label  shall be of self-adhesive   material, cut to the outline of  the label. 
A trim or die cut margin  of up to 5 mm around  the label  is acceptable.KUWAITI  STANDARD  KWS  1893 /2018 
13 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure (1) 
 
Example of an energy efficiency label for all air -conditioner s (CC≤70,000 Btu/h ) 
 
 
 KUWAITI  STANDARD  KWS  1893 /2018 
14 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure (2) 
 
Information of an energy efficiency label for all air -conditioner s (CC≤70,000 Btu/h ) 
  KUWAITI  STANDARD  KWS  1893 /2018 
15 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure (3) 
 
Dimensions of an energy efficiency label f or all air -conditioner s (CC≤70,000 Btu/h ) 
 
  KUWAITI  STANDARD  KWS  1893 /2018 
16 
 Supplier  or V endor  in Kuwait  : APPENDIX  A 
APPLICATION  FOR  REGISTRATION  OF 
AIR-CONDITIONERS  FOR  ENERGY  LABELLING  AND  MEPS  
(please  type or print)  
 
 
This  Appendix  sets out the required  format  for submitting  an application  for registration.  
 
 
Application  for registration  of an air-conditioner  for energy  efficiency.  
 
I hereby  apply  for registration  of an electrical  appliance/s  for the purpose  of energy  labelling.  
 
 
   In the Country  of ...................  (specify  the country  in which  this applicat ion is made ) 
 
 
PART  1 APPLICANT  INFORMATION  
 
Applicant  Name  : ……………………………… ........................... ..........................................  
 
Company  Name  : ……………………… ........................... ......................................................  
 
Comp any Address  : ………… ..........................................................................  ………………  
 
P .O.Box : …………………………....  Post Code:  .......................................................  
 
Contact  Person  : (Name  and Adrees  and workplace  in each  sales  country)  
 
Jop Title  : ……………………………………  
 
Phone  : ……………………  Fax : ………………….  Email : ..........................  
No. Supplier  or 
V endor  Name  Contact  Address  
(Email Address,  Phone,  Fax) License  Number  
or 
Commercial  
Licenses  
1    
2    
...    KUWAITI  STANDARD  KWS  1893 /2018 
17 
 Part  2 DESCRIPTION  OF THE  APPLIANCE  
Model  Name  (if available)   
Model  Number  or Family  Number:   
Model  Number:  
(on indoor  unit for split systems)   
Model  Number  on Outdoor  Unit:  
(split  systems  only)   
Other Model     Numbers     to    be    included     under     this 
registrat ion:  
Country  of Manufacture:   
Model  Number(s)  to appear  on the Energy  Label:   
Date  of manufacture  traceability  (of package  unit or indoor  
unit if split system):  
Is the date of manufacture  permanently  marked  on the 
rating  plate  in a non-encrypted  format ? 
If yes, provide  an example  of the date format.  
If no, provide  details  on how to determine  (from  the 
serial number  or other permanent  markings  for this 
model)  Yes 
Date  format:  No Provide  details:  
'Date of manufacture  traceability  (of outdoor  unit if split 
system):  
Is the date of manufacture  permanently  marked  on the 
rating  plate  in a non-encrypted  format?  
If yes, provide  an example  of the date format.  
If no, provide  details  on how to be determined  (from  the 
serial  number  or other  permanent  markings  for this model)  Yes 
Date  format:  No                  Provide  details:  
Does this model  or family  replace  or supplement  another  
model or family  with identical  energy  consumption  and 
energy  efficiency  rating?  
(indicate  correct  answer)  Y es No 
If yes, indicate  relevant details:  
 
 
 
 
 
 
 
 
 
 
 
 
 
 Model  
Name  Model  
number  Registration  number  
Informtion  about  the components  used  in the 
manfucturing:  
There  must be complemantry  documents  for the 1- Compressor  
Country  of origin: ……………………………..  
Name  of Manufacturer  or his tradin g mark:  ……  
 
 KUWAITI  STANDARD  KWS  1893 /2018 
18 
 materials  used in the Manufacturing  including  
drawings  figures , technical  specifications  
and product  model  accreditation  (if any)  for each 
 
 
   Compressor  model  number:  ……………………  
Compressor   type:  …………………….…………  
 2- Fan 
Country  of origin: ……… .. 
Name  of Manufacturer  or his trading  mark:  …….  
Fan Model  number:  ………..  
Fan type:  …………………….  
 
3- Heat Exchanger  
V olume  and description  of the heat exchanger: …. 
 
 
 
 
 
 
. 
Country  of origin: ………..  
Name  of Manufacturer  or his trading  mark:  ……
. 
Fan Model  number:  ………..  
Fan type:  …………………….  
 
3- Heat Exchanger  
V olume  and description  of the heat exchanger: …
. 
 of the components  mentioned  here.  
 
Part  3 TESTING  AND  TEST  REPORT   
Test Laboratory  Type:  
(put () inside  the appropriate  box) □ Own  'in-house' laboratory:  
□ Independent  laboratory:  
Test Laboratory  Name:   
Test Laboratory  Address:   
Test Laboratory  Location:   
Test Laboratory  Accreditation:   
Test Standard  Used:   
Does  this air-conditioner  have  separate  indoor  
and outdoor  units □ Yes 
□ No 
Serial  number  of  test unit/s and date tested:  SERIAL  NUMBER  
Unitary      unit     or 
indoor  unit if split 
system  SERIAL  
NUMBER  
Outdoor  unit 
if split system  Test date 
   
Rated  voltage  and frequency  of tested  unit Package  unit Unitary  unit or 
indoor unit if 
split system  Outdoor      unit     if     split 
system  
Rated  voltage  or 
Rated  voltage  range  
(V)   
Rated  frequency  
(Hz)   KUWAITI  STANDARD  KWS  1893 /2018 
19 
 Tested  voltage  and frequency  of tested  unit  Unitary  unit or 
indoor unit if 
split system  Outdoor      unit     if     split 
system 
Tested  voltage  (V)   
Test frequency  (Hz)   
Part  4 SPECIFIC  APPLI ANCE   DETAILS  
Air-conditioner  dimensions  (Advisory  
only):  
(for split systems  note only dimensions  of the 
internal  unit) Width  (mm):  Height  (mm):  Depth  (mm):  
Power  supply:  □ Single -phase 
□ Three -phase  
Rated  V oltage  (V):  
Rated  Frequencu  (Hz):   
Refrigerant  Number  : Please   specify:  
 
 
A/C Configuration  1—Air Distribution  □ Ducted  
□ Non ducted  
A/C Configuration  2—Type  please   specify:  
 
 
 
Does  this air-conditioner  use a variable  speed 
drive  (inverter)  or a multi -speed  compressor?  □ Yes 
□ No KUWAITI  STANDARD  KWS  1893 /2018 
20 
  
 
* to 2 decimal  places  
**       to 3 decimal  place  
 
DECLARATION  
 
I declare  that the details  stated  above  are correct.  
 
Signature  of Applicant:  ................. ............................  Date:  ...................................  
 
Office  use only  
 
Date  received:  .......... ...................            Registration  number: ……………………….  
 
 
 
  
Part  5 TEST  RESULTS  
TEST  RESULTS —COOLING —CONDITION  T4 
COOLING  POWER  Rated  Effective  Power  
Input  (kW)*   
Tested  Cooling  Power  
Input (kW)**   
COOLING  CAPACITY  Rated  Total  Cooling  
Capacity  (Btu/h)*  
Tested  Total  Cooling  
Capacity  (Btu/h)**  
EER  (Btu/h)/W  Rated  EER  **  
Tested  EER  **  KUWAITI  STANDARD  KWS  1893 /2018 
21 
  
 
 
 
APPENDIX  B 
 
 
Test Conditions  
 
1. For T4 conditions, the a ir conditioning  units (other than window type)  shall have a 
power  rating 1.5 kW/RT (EER 8.0) while operating at maximum indoor air flow 
and evaporative on-coil DBT 26.6 C (80 F) & WBT 19.4 C (67 F) and outdoor  
(ambient ) temperature of 48 C (118.4 F) & 26.9 C (80.4F) 
 
2. Units shall operate continuously at an outside ambient temperature of 52 C (125.6 
F) for at least 2 hours without tripping.  
 
3. Power supply (50 Hz):  
Three Phase: 415 V 6 % (accepted range 390 -440 V).  
Single Phase: 240 V 6 % (accepted range 225 -254 V).  
 
4. Motor input 5 hp (3.73 kW) shall be three phase.