Mike Elliott

Thanks for the response, Marc. Since my posting, we've learned that the Aqua Therm is served by our tankless water heater and that it is a closed system, so likely not the cause of the smell. Our potable water is served by electric water heaters which do not sit unused. We do have a high loop with the dishwasher, so we don't think that's the cause. We've had multiple plumbers look at that. The mystery continues

Hello. There seems to be some Aqua Therm expertise on this board - expertise I have been hard-pressed to find. We bought a home in Portland, OR that has one of these systems. About four years ago, we replaced our water heaters. Over the past 3 years or so we have been getting intermittent, but frequent, very bad odors in our dishwasher which has resulted in us having to re-run loads multiple times. We are confident the dishwasher is not the problem as it has been replaced (more than once) with no change in the problem. Is it possible that the Aqua Therm/water heater configuration could be the source of our impossible to pin down problem? We have had multiple plumbers and dishwasher installers trying to figure out the problem - none have considered the Aqua Therm system. Thanks!