We have quite the collection of rentals in service inside customer's homes. They are a great way to spread out the cost of equipment over time rather than purchasing water treatment all up front. This customer had a rental in their home that worked for years, however, sometimes water conditions change and different equipment is needed for quality water. This residence had started to get stronger odor from inside the softener, this usually mean there has been a bacteria contamination and a culture has formed inside the tank. To remedy the issue, and continue to treat the iron in the water, we installed a EVAIR-1054 with an ozone generator. We also installed a EVR-1044U to continue to treat hardness.