Does anyone have any experiences with combination water/space heating?
Let me know if I got this right: Essentially the water heater heats up to 140F and delivers 140F to the HVAC unit to a heating coil for space heat, then that line returns back to the water heater. Domestic water is tapped separately from the tank at 140 and mixed down to 120 to serve the sinks, showers, washing machine, etc.
What are some of the pros & cons of using such a system? Would you recommend an uneducated owner use it in their house?
Thanks in advance -