The water for the furnace is treated with anti-freeze and corrosion resistance. I did not need to add to it this year, so I’m running on the same water from last year. It cycles through the system, and it is in the range of 185 degrees when it leaves the furnace. It travels underground no more than a hundred feet via the pumping action, so I imagine it stays in the 165 to 185 range very easily with the constant recycling through the furnace.
The line going to the water heater is so hot that it heats the water in the heater beyond our ability to touch it when it comes out the faucet. Since you can have your hot water in the water heater continue even in a power outage, by means of a small amount of generator juice to your furnace, you can have a constant supply of hot water from your own water heater throughout any blackout.
Sounds like a very resourceful system.
And expensive.
In your opinion, are the benefits worth the expensse of your investment?
Thanks again,
Red.