Solar Benefits

Who would benefit from solar heating?

  • New and existing homes
  • Guest houses and hotels
  • Retirement villages and frail care facilities
  • Hospitals and clinics
  • Gyms and sports facilities
  • Factories, food processing plants and offices

What size solar system does the average home require?

This is a question which can only be answered once a needs analysis has been done.

A needs analysis consists of the following:

  1. How many people normal use hot water?
  2. What quantity of water is being used (Baths, showers, dishes etc.)
  3. When is the hot water being used?
  4. Will there be more people using hot water in the near future?


Once the above has been established we can make recommendations. However there is a rule of thumb used:

  • A 150L system will normally serve 1 or 2 people
  • A 200L system will be adequate for 2 to 4 people
  • A 250L system for 4 to 5 people
  • A 300L system for 5 to 6 people


The above is a very rough guideline and would also not apply in all cases as needs and architecture might dictate different configurations.

The success of your system is largely dependent on getting the system sized correctly.

  1. This means sizing the system to meet your current needs.
  2. Allowing for possible future expansion.


Other factors that influence the amount of energy one can save without going without hot water.

  1. Type and flow of the shower heads you are using.
  2. Type of taps and mixers being used. Are they fitted with one touch nipples?
  3. Length of hot water pipes from hot water source.
  4. Amount and quality of lagging on hot water pipes.

Savings Case Study

Saving-Consumption