Kohler Invigoration steam generators create steam for enclosed shower rooms and are typically installed in a nearby mechanical space with dedicated controls and plumbing. Repairs are often worthwhile for serviceable components such as solenoids, sensors, or controls, particularly if the generator has been maintained and the water supply is treated to reduce scale.
Replacement becomes more compelling when the heating element and internal components are heavily scaled, the tank is leaking, or repeated faults occur despite descaling-because labor and downtime can be significant. Compare repair quotes to the threshold and consider the true cost of access: if the generator is in a tight chase or behind finished surfaces, service can become expensive.
Water quality is the biggest longevity lever; installing filtration/softening and following manufacturer flush procedures can prevent early failures. If the unit is near end-of-life and needs multiple parts, replacement can restore dependable steam output and reduce future maintenance risk.