Smart Red
Garden Master
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Was that the whole cost? What is the back up heat? Do I understand this correctly? The water is 40 or so degrees to start and then you have to heat it up from there? Electricity? Gas? Our electricity costs are the highest in the country.
That was the cost for a 5 ton system. Geothermal takes 53-ish degree water out of the ground and extracts the heat with a heat exchanger. The water, now cooled, is returned to the ground. There is no 'heating' done to the water after heat is extracted. Much like you have hot air coming from beneath your refrigerator, hotter than the air inside.
Mine is done with electricity since there's no natural gas running out here. We never had propane either. In general the heating costs run about the same as an additional refrigerator. . . much less than the cost of the fuel oil we used to burn.
Free hot water is a 'free' plus from the extra heat extracted so our electric water heater is used much less . . . almost not at all during the summer.
We may still put in a backup heating system, but we do have two fireplaces that can keep the house warm enough if needed and, living in the woods means all the wood for burning that we would need without buying cord wood.