Check and clean all your filters. If you no longer have your owners manual, you can probably find one online. There should be something in there telling you where the filters are. That would be the first step I would take.
Do you have a water softener. If so, is it working properly.....second thing I'd check if there is one.
Do you have a water softener. If so, is it working properly.....second thing I'd check if there is one.