How long is the typical lifespan for a geothermal system?

Geothermal systems typically have a lifespan of 15-20 years rather than a 7-10 year lifespan on a conventional furnace and air conditioning system. The ground loop of the geothermal system (the pipes buried in your yard) is made up of polypropylene pipe, the same pipe which is used in city gas lines, and they have a lifespan up to 50 years.

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