Division 2 WATER HEATING ENERGY EFFICIENCY CLASSES

United Kingdom

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, η_wh in %

	3XS	XXS	XS	S	M	L	XL	XXL
A⁺⁺⁺	η_wh ≥ 62	η_wh ≥ 62	η_wh ≥ 69	η_wh ≥ 90	η_wh ≥ 163	η_wh ≥ 188	η_wh ≥ 200	η_wh ≥ 213
A⁺⁺	53 ≤ η_wh < 62	53 ≤ η_wh < 62	61 ≤ η_wh < 69	72 ≤ η_wh < 90	130 ≤ η_wh < 163	150 ≤ η_wh < 188	160 ≤ η_wh < 200	170 ≤ η_wh < 213
A⁺	44 ≤ η_wh < 53	44 ≤ η_wh < 53	53 ≤ η_wh < 61	55 ≤ η_wh < 72	100 ≤ η_wh < 130	115 ≤ η_wh < 150	123 ≤ η_wh < 160	131 ≤ η_wh < 170
A	35 ≤ η_wh < 44	35 ≤ η_wh < 44	38 ≤ η_wh < 53	38 ≤ η_wh < 55	65 ≤ η_wh < 100	75 ≤ η_wh < 115	80 ≤ η_wh < 123	85 ≤ η_wh < 131
B	32 ≤ η_wh < 35	32 ≤ η_wh < 35	35 ≤ η_wh < 38	35 ≤ η_wh < 38	39 ≤ η_wh < 65	50 ≤ η_wh < 75	55 ≤ η_wh < 80	60 ≤ η_wh < 85
C	29 ≤ η_wh < 32	29 ≤ η_wh < 32	32 ≤ η_wh < 35	32 ≤ η_wh < 35	36 ≤ η_wh < 39	37 ≤ η_wh < 50	38 ≤ η_wh < 55	40 ≤ η_wh < 60
D	26 ≤ η_wh < 29	26 ≤ η_wh < 29	29 ≤ η_wh < 32	29 ≤ η_wh < 32	33 ≤ η_wh < 36	34 ≤ η_wh < 37	35 ≤ η_wh < 38	36 ≤ η_wh < 40
E	22 ≤ η_wh < 26	23 ≤ η_wh < 26	26 ≤ η_wh < 29	26 ≤ η_wh < 29	30 ≤ η_wh < 33	30 ≤ η_wh < 34	30 ≤ η_wh < 35	32 ≤ η_wh < 36
F	19 ≤ η_wh < 22	20 ≤ η_wh < 23	23 ≤ η_wh < 26	23 ≤ η_wh < 26	27 ≤ η_wh < 30	27 ≤ η_wh < 30	27 ≤ η_wh < 30	28 ≤ η_wh < 32
G	η_wh < 19	η_wh < 20	η_wh < 23	η_wh < 23	η_wh < 27	η_wh < 27	η_wh < 27	η_wh < 28