What size hot water cylinder do I need in NZ

Choosing the right size hot water cylinder for your home in New Zealand depends on the number of people in your household and your hot water usage patterns. Here’s a guide to help you determine the appropriate size:

General Guidelines

1-2 People:

– Small households or apartments.

– Recommended Size: 135-180 liters

3-4 People:

– Average-sized family.

– Recommended Size: 180-300 liters

5+ People:

– Larger families or households with high hot water usage.

– Recommended Size: 300+ liters

Factors to Consider

– Hot Water Usage: If you use a lot of hot water for showers, baths, laundry, or dishwashing, you may need a larger cylinder.

– Peak Usage Times: Consider if there are times when many people use hot water simultaneously.

– Future Needs: Think about whether your household size might change in the near future.

– Efficiency: Newer, more efficient models may provide the same amount of hot water with a smaller capacity due to better insulation and quicker heating.

Specific Use Cases

– High Demand: If you have a spa bath or multiple bathrooms, you may need to size up.

– Low Demand: For households with low hot water usage, a smaller cylinder can be more cost-effective and efficient.

Additional Considerations

– Energy Source: The energy source (electric, gas, heat pump, or solar) can also affect your choice. Heat pump and solar water heaters can be more efficient, potentially allowing for a smaller cylinder.

– Installation Space: Ensure you have enough space for the cylinder you choose.

– Local Climate: In colder areas, a slightly larger cylinder might be needed to compensate for heat loss.

Consultation

It’s often beneficial to consult with a professional plumber or hot water specialist who can assess your specific needs and usage patterns to recommend the optimal size for your household.

If you provide more details about your household (e.g., number of people, typical hot water usage), I can give a more tailored recommendation.