New Zealand · costs in NZD
Bottom-mount fridge freezer · 2 doors
Panasonic NR-BX421B Fridge
Panasonic NR-BX421B is a 380 L bottom-mount fridge freezer registered for sale in New Zealand under the trans-Tasman E3 energy rating scheme (registration ZRF0727).
- Total capacity
- 380 L
- 230 L fridge + 150 L freezer
- Energy rating
- 4
- Star rating index 4.46
- Annual electricity use
- 299 kWh
- Label figure (comparative energy consumption)
- Estimated running cost
- $99 / year
- $8.22 / month · $987 over 10 years
2% more electricity than the median of 59 comparable 300–399 L bottom-mount fridge freezer registrations (293 kWh a year). It uses less than 37% of them. At 33c/kWh that is about $2 a year more than the median, $20 over 10 years.
Uses 41% less than the maximum allowed for its size and type under the minimum energy performance standard (511 kWh a year MEPS level).
Cost = label kWh × 33c/kWh in NZD; change the price above to your tariff.
How efficient is it for its size?
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.
Panasonic NR-BX421B running cost
- Per month
- $8.22
- Per year
- $99
- 5 years
- $493
- 10 years
- $987
299 kWh × 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
- 380 L
- Fresh food (fridge) volume
- 230 L
- Frozen storage volume
- 150 L
- GEMS adjusted volume
- 473 L
- fresh food compartment
- 230 L gross
- freezer compartment
- 112 L gross
- zero-star compartment
- 38 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 380 L, at least 3% lower annual kWh.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Hisense HRBM418E417 L153 kWh/yr | 8 | $50 | |
| Liebherr CNef 4315350 L187 kWh/yr | 6 | $62 | |
| Hisense HRBM418D417 L187 kWh/yr | 7 | $62 | |
| Electrolux EBE4302SE425 L190 kWh/yr | 7 | $63 | |
| Electrolux EBE4302*E425 L190 kWh/yr | 7 | $63 |
Fridges similar to the Panasonic NR-BX421B
| Model | Capacity | Stars | kWh / yr | Why similar |
|---|---|---|---|---|
| Chiq CBM39*N**6E 4% larger, same door count, similar external size | 396 L | 6 | 223 | 4% larger, same door count, similar external size |
| Chiq CBM394NSS6E 4% larger, same door count, similar external size | 396 L | 6 | 223 | 4% larger, same door count, similar external size |
| Fisher & Paykel E/RF402B series same capacity, same door count | 380 L | 3 | 361 | same capacity, same door count |
| Fisher & Paykel RF402BLPX6 same capacity, same door count | 380 L | 3 | 361 | same capacity, same door count |
| Liebherr CNPef 4416 3% smaller, same door count, similar star rating | 368 L | 4.5 | 262 | 3% smaller, same door count, similar star rating |
| Aeg 19CBSNV7 1% smaller, same door count | 376 L | 6 | 193 | 1% smaller, same door count |
Same consumer type, total capacity within 12% of 380 L; ordered by closeness of capacity, then lowest annual kWh.
Other Panasonic models of similar size
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Panasonic NR-BX421B380 L299 kWh/yr | 4 | $99 | |
| Panasonic NR-BX421H376 L233 kWh/yr | 5.5 | $77 |
Compare NR-BX421B with another fridge
Panasonic NR-BX421B specifications
- Type
- Bottom-mount fridge freezer
- Configuration
- Upright
- Doors
- 2
- Defrost
- Variable defrost controller
- Ice maker
- –
- Width
- 686 mm
- Height
- 1,680 mm
- Depth
- 697 mm
- Annual energy (label)
- 299 kWh
- Star rating index
- 4.460
- MEPS level (maximum allowed)
- 511 kWh
- kWh per adjusted litre
- 0.632
- Country of manufacture
- Vietnam
Related Panasonic model numbers starting with NRBX421B
1 model numbers on 1 other registration. Variants registered separately can carry different star ratings and energy figures; check the registration number on the label.
| Model | Registration | Stars | kWh / yr | Registration expires |
|---|---|---|---|---|
| NR-BX421B | ARF3846 | 4 | 299 | 15 August 2031 |
New Zealand E3 registration details
- Registration number
- ZRF0727
- GEMS registration id
- 137503
- Status
- approved, unavailable (self-reported)
- Registration expires
- n/a (NZ registration)
- Registered for sale in
- New Zealand
- Family
- –
- Designation
- Refrigerator/freezer
- Product class
- Class 6
- GEMS group
- Group 5B: refrigerator-freezer, automatic defrost, bottom-mounted freezer
- Regulatory standard
- EE Amendment Regulations 2025 Schedule 2E
- 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: panasonic.co.nz. How the derived figures are calculated.