# Commission Delegated Regulation (EU) No 811/2013 of 18 February 2013 supplementing Directive 2010/30/EU of the European Parliament and of the Council with regard to the energy labelling of space heaters, combination heaters, packages of space heater, temperature control and solar device and packages of combination heater, temperature control and solar device (Text with EEA relevance), Division 2: WATER HEATING ENERGY EFFICIENCY CLASSES

Extent: E+W+S+N.I.

The water heating energy efficiency class of a combination heater shall be determined on the basis of its water heating energy efficiency as set out in Table 3.
The water heating energy efficiency of a combination heater shall be calculated in accordance with point 5 of Annex VII.
Table 3
Water heating energy efficiency classes of combination heaters, categorised by declared load profiles, ηwh in %
3XS
XXS
XS
S
M
L
XL
XXL
A+++
ηwh ≥ 62
ηwh ≥ 62
ηwh ≥ 69
ηwh ≥ 90
ηwh ≥ 163
ηwh ≥ 188
ηwh ≥ 200
ηwh ≥ 213
A++
53 ≤ ηwh < 62
53 ≤ ηwh < 62
61 ≤ ηwh < 69
72 ≤ ηwh < 90
130 ≤ ηwh < 163
150 ≤ ηwh < 188
160 ≤ ηwh < 200
170 ≤ ηwh < 213
A+
44 ≤ ηwh < 53
44 ≤ ηwh < 53
53 ≤ ηwh < 61
55 ≤ ηwh < 72
100 ≤ ηwh < 130
115 ≤ ηwh < 150
123 ≤ ηwh < 160
131 ≤ ηwh < 170
A
35 ≤ ηwh < 44
35 ≤ ηwh < 44
38 ≤ ηwh < 53
38 ≤ ηwh < 55
65 ≤ ηwh < 100
75 ≤ ηwh < 115
80 ≤ ηwh < 123
85 ≤ ηwh < 131
B
32 ≤ ηwh < 35
32 ≤ ηwh < 35
35 ≤ ηwh < 38
35 ≤ ηwh < 38
39 ≤ ηwh < 65
50 ≤ ηwh < 75
55 ≤ ηwh < 80
60 ≤ ηwh < 85
C
29 ≤ ηwh < 32
29 ≤ ηwh < 32
32 ≤ ηwh < 35
32 ≤ ηwh < 35
36 ≤ ηwh < 39
37 ≤ ηwh < 50
38 ≤ ηwh < 55
40 ≤ ηwh < 60
D
26 ≤ ηwh < 29
26 ≤ ηwh < 29
29 ≤ ηwh < 32
29 ≤ ηwh < 32
33 ≤ ηwh < 36
34 ≤ ηwh < 37
35 ≤ ηwh < 38
36 ≤ ηwh < 40
E
22 ≤ ηwh < 26
23 ≤ ηwh < 26
26 ≤ ηwh < 29
26 ≤ ηwh < 29
30 ≤ ηwh < 33
30 ≤ ηwh < 34
30 ≤ ηwh < 35
32 ≤ ηwh < 36
F
19 ≤ ηwh < 22
20 ≤ ηwh < 23
23 ≤ ηwh < 26
23 ≤ ηwh < 26
27 ≤ ηwh < 30
27 ≤ ηwh < 30
27 ≤ ηwh < 30
28 ≤ ηwh < 32
G
ηwh < 19
ηwh < 20
ηwh < 23
ηwh < 23
ηwh < 27
ηwh < 27
ηwh < 27
ηwh < 28

---
Source: https://www.legislation.gov.uk/eur/2013/811/annex/II/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2013-811/annex-II/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.