ErP Directive 2009/125 for split air conditioning and space heating systems
The new directive have been adopted by the European Parliament to achieve the goals to reduce the power consumption in Europe related to air conditioning business and other home appliance as well as heat pump units, air handling, ventilation etc.
With its strategic plan called “20/20/20”, Europe aims to reduce the CO2 emissions by 20%, using 20% more renewable energy and consuming 20% less primary energy by 2020.
In order to facilitate the achievement of these objectives, EU issued the ErP directive that specifies the ecodesign requirements for placing on the market the energy-using products.
For split air conditioners with power lower than 12 kW,the minimum requirements are based on a new index of seasonal efficiency and on the sound power level as shown in the table below:
|A/C <6 kW||A/C 6-12 kW|
|Lw indoor max.||60 dB(A)||65 dB(A)|
|Lw outdoor max.||65 dB(A)||70 dB(A)|
For air, water or ground source heat pump (HP) units with a rated heat output (RHO) lower than 400 kW, minimum requirements for seasonal space heating efficiency and for sound power level have been introduced as shown inside below tables:
|From 26/09/15||From 26/09/17|
|ƞs min (Medium temperature HP)||100%||110%|
|RHO ≤ 6 kW||6 kW < RHO ≤ 12 kW||12 kW < RHO ≤ 30 kW||30 kW < RHO ≤ 70 kW|
|Lw indoor max.||60 dB(A)||65 dB(A)||70 dB(A)||80 dB(A)|
|Lw outdoor max.||65 dB(A)||70 dB(A)||78 dB(A)||88 dB(A)|
Measuring the performance in real conditions
The European Union requires the application of objective metrics for measuring performance in order to establishthe minimum requirements and provide customers with information regarding the performance of air conditioning useful for their purchase.
The methodology used up to 2012 and based on the efficiency rating (EER) – presents a significant difference between the predicted and actual performance. For this reason a more accurate method has been designed: the seasonal efficiency ratio in cooling mode (SEER) and in heating mode (SCOP).
Among the most significant changes it includes the introduction of different operating temperatures for cooling and heating, the possibility to use energy both at partial load and full load and power usage in standby and off mode.
Considering that most systems operate mostly in part-load conditions, the new methodology will allow to assess better the performance of a unit in real conditions.
New energy classification
In terms of labelling the new energy classification is in force since 1 January 2013 for split air conditioning systems below 12 kW, and from 26 September 2015 for space heating systems below 70 kW. The transition to the concept of seasonal efficiency involves the development of a completely new energy label which shows the energy class based on the values of SEER and SCOP and the main characteristics of the product such as the sound power level of the indoor and outdoor units.
Concerning split air conditioners, energy efficiency in heating is presented with three different values according to the climate where the product is installed. For the manufacturer of the product it is mandatory to indicate the values for the Temperature climate (“Average” heating value), those of the other two climates are optional. The data and energy efficiency classes are declared in accordance with EN14825.The energy class shown in the new label, both in cooling and in heating, cannot be compared to the energy class that had the old energy label as the latter was based on specific indices (EER and COP) and not on seasonal indices (SEER and SCOP).
The energy efficiency classes for split air conditioners are shown in the table below:
|Energy Efficiency Class||SEER||SCOP|
|A+++||SEER ≥ 8,50||SCOP ≥ 5,10|
|A++||6,10 ≤ SEER < 8,50||4,60 ≤ SCOP < 5,10|
|A+||5,60 ≤ SEER < 6,10||4,00 ≤ SCOP < 4,60|
|A||5,10 ≤ SEER < 5,60||3,40 ≤ SCOP < 4,00|
|B||4,60 ≤ SEER < 5,10||3,10 ≤ SCOP < 3,40|
|C||4,10 ≤ SEER < 4,60||2,80 ≤ SCOP < 3,10|
|D||3,60 ≤ SEER < 4,10||2,50 ≤ SCOP < 2,80|
|E||3,10 ≤ SEER < 3,60||2,20 ≤ SCOP < 2,50|
|F||2,60 ≤ SEER < 3,10||1,90 ≤ SCOP < 2,20|
|G||SEER < 2,60||SCOP < 1,90|
Concerning space heating systems below 70 kW, it is required to display the seasonal space heating energy efficiency class referring to the Average climate and to include information about sound power level and rated heat output referring to Average, Colder and Warmer climates. Two different labels are available according temperature level application (medium and low).
Starting from 26 September 2019 an updated label will delete classes lower than E and will introduce A+++ class.
Seasonal space heating energy efficiency classes of heaters, with the exception of low-temperature heat pumps and heat pump space heaters for low-temperature application are shown inside below table:
|Seasonal space heating energy efficiency class||ƞs|
|A+++||ƞss ≥ 150|
|A++||125 ≤ ƞs< 150|
|A+||98 ≤ ƞs< 125|
|A||90 ≤ ƞs< 98|
|B||82 ≤ ƞs< 90|
|C||75 ≤ ƞs< 82|
|D||36 ≤ ƞs< 75|
|E||34 ≤ ƞs< 36|
|F||30 ≤ ƞs< 34|
Seasonal space heating energy efficiency classes of low-temperature heat pumps and heat pump space heaters for low-temperature application are shown inside below table:
|Seasonal space heating energy efficiency class||ƞs|
|A+++||ƞs ≥ 175|
|A++||150 ≤ ƞs< 175|
|A+||123 ≤ ƞs< 150|
|A||115 ≤ ƞs< 123|
|B||107 ≤ ƞs< 115|
|C||100 ≤ ƞs< 107|
|D||61 ≤ ƞs< 100|
|E||59 ≤ ƞs< 61|
|F||55 ≤ ƞs< 59|