# The Energy Information (Household Refrigerators and Freezers) Regulations 2004, Paragraph 2

Extent: E+W+S+NI

The energy efficiency class of an appliance shall be determined in accordance with Table 4.
Table 4
Energy efficiency index: I
Energy efficiency class
I < 55
A
55 ≤ I < 75
B
75 ≤ I < 90
C
90 ≤ I < 100
D
100 ≤ I < 110
E
110 ≤ I < 125
F
125 ≤ I
G
where—
“energy efficiency index” (expressed as a percentage) = annual energy consumption of appliance in accordance with the harmonised standards / standard annual energy consumption of appliance;
“standard annual energy consumption of appliance” (expressed in kWh/year) = M × adjusted net volume + N;
“adjusted net volume” (expressed in litres) = net volume of fresh food compartment + Ω × net volume of frozen food compartment; andthe values of M, N and Ω are taken from Table 5.
Table 5
Category of Appliance
Ω
M
N
(1) For refrigerator/chiller the adjusted volume = net volume of fresh food compartment + Ω × net volume of chiller (10°C) compartment (expressed in litres).
(2) For ‘no frost’ appliances as defined in the harmonised standards, this index is increased by a provisional factor of 1.2 giving a value of 2.58 (this allows for the possible bias of the measurement method, which does not allow for the lack of ice build-up on “no frost” appliances. In practice, ice build-up will somewhat increase the consumption of “conventional” appliances).
(3) Adjusted net volume (AV) shall be calculated by the formula:
AV=∑all compartments(25−Tc)20×Vc×Fc where—
“Tc” is design temperature (in °C) of each compartment;
“Vc” is the net volume (in litres) of each compartment; and
“Fc” is a factor which equals 1.2 for “no frost” compartments and 1 for other compartments.
(4) For these appliances, the values of M and N shall be determined by the temperature and star rating of the compartment with the lowest temperature, in accordance with Table 6.
1. Larder fridge
—
0.233
245
2. Refrigerator/chiller
0.75
0.233
245
3. Refrigerator no star
1.25
0.233
245
4. Refrigerator*
1.55
0.643
191
5. Refrigerator**
1.85
0.450
245
6. Refrigerator***
2.15
0.657
235
7. Fridge/freezer*(***)
0.777
303
8. Upright freezer
2.15
0.472
286
9. Chest freezer
2.15
0.446
181
10. Multi-door or other appliances
Table 6
Temperature of coldest compartment
Equivalent category
M
N
>-6c
1 Larder fridge
2 Refrigerator/chiller
3 No-star refrigerator
0.233
245
≤ -6°C *
4 Refrigerator (*)
0.643
191
≤ -12°C **
5 Refrigerator (**)
0.450
245
≤-18°C ***
6 Refrigerator (***)
0.657
235
≤-18°C *(***)with freezing capacity
7 Fridge/freezer *(***)
0.777
303

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Source: https://www.legislation.gov.uk/uksi/2004/1468/schedule/5/paragraph/2 (the official version)
Page: https://openlegislation.uk/energy-information-household-refrigerators-and-freezers-regulations-2004/schedule-5/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.