Eva-Dry uses non-toxic silica gel in its renewable units. Silica gel is a natural substance that will always absorb moisture. After several years the silica beads will absorb less moisture. The units last roughly 10 years before needing to be replaced, but as long as the heat source in the unit works, the beads will continue to absorb moisture and the heater inside will allow the beads to expel the moisture absorbed. The renewable units are also covered by a 5-year warranty.
Eva-Dry’s electric models are covered by a 1-year warranty, but like most electric products it depends on the preventative maintenance as to how long they will last.
Keeping the unit dust-free is important, as dust accumulation will cause the internal parts to have to work harder and can cause power cord failure over time. To keep it in optimal performance we recommend using compressed air quarterly to dust the outer vents and inside components to prevent and clear out dust accumulation. Make sure prior to using compressed air to clear the unit, turn off and unplug the unit, and remove the water reservoir.