Unless you are unusually dedicated, the automated and self-monitoring features or dealer's service agreement are recommended to ensure good operation. Many systems require periodic cleaning or replacement of components, such as filter cartridges. Almost all water treatment devices require some monitoring or testing to evaluate and ensure proper operation. As the owner or user of a home water treatment device, monitoring to ensure proper operation is your responsibility. This usually requires special equipment.
Manufacturers frequently offer monitoring equipment either as part of the package or as an option.
Ask questions about what test you need to do, what test equipment you need, and if it is part of the treatment package. Regardless of whether you or your dealer provide the service, there is a cost. Filters must be changed, materials added as needed, and the water checked regularly to be sure things are working. Unserviced equipment may contribute to increased levels of some contaminants. Find out what supplies and equipment are needed, and the expected costs.