Product review (4 stars): Solenoid valve maintenance and use
This solenoid valve works very well. With proper maintenace it should last 15 to 20 years.
Proper maintenace means it should be removed from its (in-line) place on the humidifier in spring when Aprilaire humidifier is no longer needed and drained of all water. Then use air pressure to blow all water from the valve at both ends so that no mineral deposits can build up in the valve during the summer months when its not in use.