c/kWh
Total capacity
312 L
238 L fridge + 74 L freezer
Energy rating
3
Star rating index 3.06
Annual electricity use
336 kWh
Label figure (comparative energy consumption)
Estimated running cost
$108 / year
$8.96 / month Β· $1,075 over 10 years

8% more electricity than the median of 49 comparable 300–399 L top-mount fridge freezer registrations (312 kWh a year). It uses less than 16% of them. At 32c/kWh that is about $8 a year more than the median, $77 over 10 years.

Uses 10% less than the maximum allowed for its size and type under the minimum energy performance standard (373 kWh a year MEPS level).

Cost = label kWh Γ— 32c/kWh in AUD; change the price above to your tariff.

How efficient is it for its size?

kWh per year. Bar: the middle 80% of 49 comparable 300–399 L top-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 top-mount fridge freezer sold in Australia, 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 WTB3100WK running cost

Per month
$8.96
Per year
$108
5 years
$538
10 years
$1,075

336 kWh Γ— 32c/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
312 L
Fresh food (fridge) volume
238 L
Frozen storage volume
74 L
GEMS adjusted volume
370 L
fresh food compartment
238 L gross
freezer compartment
74 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 top-mount fridge freezers that use less electricity

Same type, total capacity within 12% of 312 L, at least 3% lower annual kWh.

ModelStarsEst. cost / yrCompare
Norj NTMF280W1278 L236 kWh/yr4.5$76
Norj NTMF280S1278 L236 kWh/yr4.5$76
Chiq CTM3******348 L241 kWh/yr5$77
Chiq CTM347NB5E348 L241 kWh/yr5$77
Hisense HRTF325S326 L256 kWh/yr4.5$82

Fridges similar to the Westinghouse WTB3100WK

ModelCapacityStarskWh / yr
Kogan KAM314TMSFD
same capacity, same door count, similar star rating
314 L3347
Artusi AFTM343X
same capacity, same door count, similar star rating
310 L3.5298
Seiki SC-320AU8TMW
same capacity, same door count, similar star rating
314 L3347
Anko ATM314W
same capacity, same door count, similar star rating
314 L3347
Kogan KAM314TMSFB
same capacity, same door count, similar star rating
314 L3347
Seiki SC-320AU8TM**
same capacity, same door count, similar star rating
314 L3347
Anko ATM314 Series
same capacity, same door count, similar star rating
314 L3347

Same consumer type, total capacity within 12% of 312 L; ordered by closeness of capacity, then lowest annual kWh.

Other Westinghouse models of similar size

ModelStarsEst. cost / yrCompare
Westinghouse WTM3100WL312 L291 kWh/yr3.5$93

Compare WTB3100WK with another fridge

Westinghouse WTB3100WK specifications

Type
Top-mount fridge freezer
Configuration
Upright
Doors
2
Defrost
Variable defrost controller
Ice maker
–
Width
1,645 mm
Height
598 mm
Depth
650 mm
Annual energy (label)
336 kWh
Star rating index
3.063
MEPS level (maximum allowed)
373 kWh
kWh per adjusted litre
0.908
Country of manufacture
Thailand

Other model numbers on registration ARF3926

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

Australian GEMS registration details

Registration number
ARF3926
GEMS registration id
178016
Status
approved, available (self-reported)
Registration expires
6 September 2031
Registered for sale in
Australia, Fiji, New Zealand
Family
WTB3100**
Designation
Refrigerator/freezer
Product class
Class 5
GEMS group
Group 5T: refrigerator-freezer, automatic defrost, top-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 5T (frost-free fridge freezer, top-mounted freezer)

Source: Australian Government Energy Rating (GEMS) registration data, DCCEEW via 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.