c/kWh
Total capacity
308 L
223 L fridge + 85 L freezer
Energy rating
3.5
Star rating index 3.54
Annual electricity use
310 kWh
Label figure (comparative energy consumption)
Estimated running cost
$102 / year
$8.53 / month Β· $1,023 over 10 years

6% more electricity than the median of 59 comparable 300–399 L bottom-mount fridge freezer registrations (293 kWh a year). It uses less than 34% of them. At 33c/kWh that is about $6 a year more than the median, $56 over 10 years.

Uses 35% less than the maximum allowed for its size and type under the minimum energy performance standard (477 kWh a year MEPS level).

Cost = label kWh Γ— 33c/kWh in NZD; change the price above to your tariff.

How efficient is it for its size?

kWh per year. Bar: the middle 80% of 59 comparable 300–399 L bottom-mount fridge freezer registrations. Dot: this model (above the median). Hover or tab to a mark for its value.

Cohort: every currently registered 300–399 L bottom-mount fridge freezer sold in New Zealand, counted once per registration. Star ratings already account for size through the GEMS adjusted-volume formula; this comparison is in raw kWh against models a buyer would actually consider instead.

Westinghouse WBB3100** running cost

Per month
$8.53
Per year
$102
5 years
$512
10 years
$1,023

310 kWh Γ— 33c/kWh. No inflation or tariff change assumed. Fridges run continuously, so the label figure is a whole-year estimate under standard test conditions.

Capacity and compartments

Total gross volume
308 L
Fresh food (fridge) volume
223 L
Frozen storage volume
85 L
GEMS adjusted volume
375 L
fresh food compartment
223 L gross
freezer compartment
85 L gross

Gross volumes exclude shelving. Fresh food = fresh food, chill and cellar compartments; frozen = freezer, two-star and ice-making (zero-star) compartments. Adjusted volume weights frozen space more heavily and is what the government uses to set the star rating for the size.

Similar bottom-mount fridge freezers that use less electricity

Same type, total capacity within 12% of 308 L, at least 3% lower annual kWh.

ModelStarsEst. cost / yrCompare
V-zug CCO6T-51149282 L173 kWh/yr6$57
Miele KFN 4375 DD edt/cs330 L194 kWh/yr6$64
Liebherr SCNsdh 5253332 L194 kWh/yr6$64
Whirlpool WB3260IU**290 L195 kWh/yr5.5$64
Whirlpool WB3260IUXX290 L195 kWh/yr5.5$64

Fridges similar to the Westinghouse WBB3100**

ModelCapacityStarskWh / yr
Samsung Electronics SRL325DMB
same capacity, same door count, similar star rating
307 L3348
Midea MDRB424FGF02AP
same capacity, same door count, similar star rating
309 L3345
Samsung Electronics SRL334NMB
same capacity, same door count, similar star rating
310 L3348
Ikea ALINGSΓ…S 80567961
3% larger, same door count, similar star rating
316 L4298
Haier HRF318B Series
same capacity, same door count
309 L4.5254
Haier HRF318BS
same capacity, same door count
309 L4.5254

Same consumer type, total capacity within 12% of 308 L; ordered by closeness of capacity, then lowest annual kWh.

Other Westinghouse models of similar size

ModelStarsEst. cost / yrCompare
Westinghouse WBB3400WH317 L310 kWh/yr3.5$102
Westinghouse WBB3400AH317 L310 kWh/yr3.5$102

Compare WBB3100** with another fridge

Westinghouse WBB3100** specifications

Type
Bottom-mount fridge freezer
Configuration
Upright
Doors
2
Defrost
Variable defrost controller
Ice maker
–
Width
1,646 mm
Height
598 mm
Depth
650 mm
Annual energy (label)
310 kWh
Star rating index
3.539
MEPS level (maximum allowed)
477 kWh
kWh per adjusted litre
0.827
Country of manufacture
Thailand

Other model numbers on registration ARF3865

Registered together with the same test results, usually colour or finish variants.

New Zealand E3 registration details

Registration number
ARF3865
GEMS registration id
177754
Status
approved, available (self-reported)
Registration expires
9 September 2031
Registered for sale in
Australia, Fiji, New Zealand
Family
WBB3100**
Designation
Refrigerator/freezer
Product class
Class 6
GEMS group
Group 5B: refrigerator-freezer, automatic defrost, bottom-mounted freezer
Regulatory standard
Greenhouse and Energy Minimum Standards (Household Refrigerating Appliances) Determination 2019
Test standard
AS/NZS IEC 62552.3:2018
Consumer type rule
GEMS group 5B (frost-free fridge freezer, bottom-mounted freezer) with one or two doors

Source: E3 programme registration data (EECA, New Zealand) (trans-Tasman E3 registration data published by DCCEEW on data.gov.au, CC BY 3.0 AU). Dataset published 25 September 2026; last checked 26 September 2026. Manufacturer: electrolux.co.th. How the derived figures are calculated.