Choosing the Best Refrigerator: Capacity, Voltage & Cooling Tech
Choose refrigerator capacity for household size, shopping frequency and the space available. Compare usable capacity in litres or cubic feet, annual energy consumption and manual versus automatic defrosting. Measure delivery access and ventilation clearances, and check that the model matches your electricity supply.
Last reviewed: 27 October 2026
Direct cool vs no-frost
| Direct cool | No-frost (frost free) | |
|---|---|---|
| How it cools | Natural convection from cold plates | Fan circulates cold air |
| Defrosting | Manual; ice builds up | Automatic |
| Price | Lower | Higher |
| During outages | Often holds cold well | Fan stops; keep doors closed |
| Food moisture | Higher | Drier; cover food |
Choosing a capacity
| Household | Suggested size |
|---|---|
| 1–2 people | 200–300 litres |
| 3–4 people | 300–400 litres |
| 5–6 people | 400–500 litres |
| Large joint family | 500 litres+ or fridge plus separate freezer |
If you freeze large batches or buy in bulk, a separate deep freezer may be more useful than a larger fridge.
Coping with power outages and voltage
- Inverter compressors start gently and generally use less electricity.
- Check the stated voltage range; wider is better in areas with low voltage.
- A stabiliser or built-in protection guards against surges after outages.
- Keep the fridge reasonably full; stored food helps hold the cold.
- Leave a gap behind the fridge for ventilation.
Features worth having
Inverter compressor
- •Lower energy use
- •Quieter operation
- •Gentler starts
Best for: Daily running cost
Glass shelves
- •Stronger
- •Easier to clean
Best for: Heavy pots and dishes
Convertible freezer
- •Switch freezer to fridge mode
- •Useful when storage needs change
Best for: Flexible storage
Water dispenser
- •Cold water without opening the door
- •Reduces energy loss
Best for: Hot summers
Frequently asked questions
Can a fridge run on a UPS?
Many can, but the starting current is high. An inverter fridge on a properly sized UPS or solar system is the most practical combination.
How long should I wait before switching on a new fridge?
Follow the manufacturer's instructions; a common recommendation is to let it stand upright for a few hours after transport.
Planning around solar or UPS?
See energy-efficient picks