Can hot water be run through the filter?
The biggest problem with hot water is the sloughing off of chemicals / compounds which had been adsorbed. The heat causes the carbon pores to open up, which could result in lead or chemicals being released into the water. And, the carbon would not effectively reduce contaminants in the water. Hot water is usually under 212 degrees, and that isn’t hot enough to alter the raw materials, so there wouldn’t be any damage to the filter itself. If someone does run hot water through the filter, they should immediately run cold water through until the filter cools and then flush the filter for about 3 minutes. The filter then will again perform effectively. And, don’t drink the hot water.