One of the most energy efficient ways to heat and cool your home is using a geothermal heating system. Geothermal heating and cooling systems rely on the temperature of the earth to maintain a comfortable environment in the home. By using the earth temperature energy requirements, and costs, are reduced.
The following websites have information about geothermal heating and cooling systems:
- Direct Energy
- Geo Thermal Dynamics
- Your Home Technical Manual (you can buy the Your Home book from Sustainable Insight)
- Wikipedia
For other information on how to keep your Australian home cool or warm we recommend the following books:

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