I am in search for a "water heater" where I use the water capacity of the heater as a reservoir for the hydronic system and have a long coil inside where the house tap hot water runs through and heats up instantly when the hydronic system is running. I guess I could just use a regular heat exchange water heater and connect it the other way but am afraid the regular exchange coil is too short to transfer enough heat for instant heat situation.
Anybody has any ideas?
Thanks,
David
Anybody has any ideas?
Thanks,
David