c/kWh
Total capacity
335 L
250 L fridge + 85 L freezer
Energy rating
3.5
Star rating index 3.65
Annual electricity use
315 kWh
Label figure (comparative energy consumption)
Estimated running cost
$104 / year
$8.66 / month ยท $1,040 over 10 years

8% more electricity than the median of 59 comparable 300โ€“399 L bottom-mount fridge freezer registrations (293 kWh a year). It uses less than 32% of them. At 33c/kWh that is about $7 a year more than the median, $73 over 10 years.

Uses 35% less than the maximum allowed for its size and type under the minimum energy performance standard (486 kWh a year MEPS level).

Cost = label kWh ร— 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 300โ€“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 300โ€“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 WBB3400** running cost

Per month
$8.66
Per year
$104
5 years
$520
10 years
$1,040

315 kWh ร— 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
335 L
Fresh food (fridge) volume
250 L
Frozen storage volume
85 L
GEMS adjusted volume
402 L
fresh food compartment
250 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 335 L, at least 3% lower annual kWh.

ModelStarsEst. cost / yrCompare
Liebherr CNef 4315350 L187 kWh/yr6$62
Liebherr SCNsdh 5253332 L194 kWh/yr6$64
Miele KFN 4375 DD edt/cs330 L194 kWh/yr6$64
Whirlpool WB3560EUBL313 L220 kWh/yr5$73
Whirlpool WB3560EU**313 L220 kWh/yr5$73

Fridges similar to the Westinghouse WBB3400**

ModelCapacityStarskWh / yr
LG GB-B300MBL
same capacity, same door count, similar star rating
335 L4293
LG GB-B300MWH
same capacity, same door count, similar star rating
335 L4293
Panasonic NR-BV361B
same capacity, same door count, similar star rating
332 L4285
Samsung Electronics SRLX4100N
1% larger, same door count, similar star rating
339 L3350
Smeg FAB32RPB5AU
1% smaller, same door count, similar star rating
331 L4298
Smeg FAB32LPB5AU
1% smaller, same door count, similar star rating
331 L4298
Eurotech 352331
2% smaller, same door count, similar star rating
330 L3.5330
Majestic M373RETRO
2% smaller, same door count, similar star rating
330 L3.5330

Same consumer type, total capacity within 12% of 335 L; ordered by closeness of capacity, then lowest annual kWh.

Compare WBB3400** with another fridge

Westinghouse WBB3400** specifications

Type
Bottom-mount fridge freezer
Configuration
Upright
Doors
2
Defrost
Variable defrost controller
Ice maker
โ€“
Width
1,756 mm
Height
598 mm
Depth
650 mm
Annual energy (label)
315 kWh
Star rating index
3.650
MEPS level (maximum allowed)
486 kWh
kWh per adjusted litre
0.784
Country of manufacture
Thailand

3 model numbers on 1 other registration. Variants registered separately can carry different star ratings and energy figures; check the registration number on the label.

ModelRegistrationStarskWh / yr
WBB3400**ARF40383.5310
WBB3400AHARF40383.5310
WBB3400WHARF40383.5310

Other model numbers on registration ARF3870

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

New Zealand E3 registration details

Registration number
ARF3870
GEMS registration id
177770
Status
approved, available (self-reported)
Registration expires
6 September 2031
Registered for sale in
Australia, Fiji, New Zealand
Family
WBB3400**
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.