Terra Energy geothermal heating and cooling systems are green, renewable, and sustainable; they're also a good deal.
In the short term, you can reasonably expect between a 15 and 50% yearly return on investment, with a payback period of three to ten years for most installations. Outside of the payback period, the economic benefits of a geothermal energy system increase markedly. Your yearly energy expenditures for heating and cooling will be up to 80% less than with conventional systems, even before adjusting for reduced maintenance costs.
This margin will only increase over time, as oil and gas become less accessible and more expensive.
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