I am in the process of installing an outside wood boiler. I was wondering if anyone could give me input as to connecting a plate heat xchanger or sidearm as a backup to my tankless electric heater. Will the plate heat xchanger provide enough hot water without a storage tank if I by-pass the tankless? The tankless is a Powerstar AE 125 by Bosch and it does a good job for my house but I would like to utilize the free heat from the boiler to heat my domestic water in the winter. Any help would be appreciated as I am new to this forum. Thanks