The best hot water system for you

Suggestions for the best system for your situation, considering cost-effectiveness and environmental concerns.

A small water-efficient household

Choose an instantaneous gas hot water system or a small, high-efficiency gas storage system.

A medium-sized household 

Select a high-efficiency gas or electric heat pump system. If you get enough sunshine, a solar water heater may also be a good option.

If you get plenty of sunshine and have a large household

The best option might be a solar hot water system. However, a high-efficiency gas storage system or a solar boosted electric heat pump may also be suitable.

A multi-residential development

A large, cost-effective solar water heater can be effectively combined with instantaneous gas boosters in each unit.

Geothermal Heat Pumps or Circulating Heat Pumps 

Very efficient electric water heaters and may be a cost-effective option for blocks of five or more units.

A gas booster solar water heater 

Will generate the lowest greenhouse gas emissions. Where gas is not available, an electric-boosted solar system or electric heat pump will minimise emissions. For most households, hot water is second only to transport as the largest cause of greenhouse gas emissions. By installing the most appropriate and efficient water heater for your household size and water use patterns, you will save money and reduce greenhouse gas emissions.