This is my first year burning the harman I am pleased with it but would like to find a more efficient way to run it. I am running it as a stand alone unit I have only one zone in the house. I am using the original johnson controls for it and the only time I get heat through the house is when the dump zone kicks on and circulates. I am thinking about hooking a 30 gallon water tank to the boiler and circulating into the tank all the time. Then I would hook a separate circulator to the water tank and I could operate that with a thermostat in the house. I would appreciate any help.