I've noticed a shorter life expectancy of electric hot water heaters since installing an OWB. My belief is that it may be do to shutting off the power to the hot water heater when using the heat exchanger during the cold months. Many if not all elec. hot water heaters have an electrode that helps maintain a positive (or neg.) ion to keep the units from corroding as quickly. I have two questions. 1. Does anyone have experience here and know if it would be a good idea to keep the power ON to the hot water heater during the months the OWB is doing the work so the electrode will help keep corrosion down? 2. Would this technology be useful in the OWB and help keep some of the corrosion issues at bay? Thanks.