Does hard-water have an affect on the operation of the HWL?
The Hot Water Lobster Instant Hot Water Valve is designed to be MAINTENANCE FREE! The HWL has very few moving parts. It is a solid brass valve body with an adjustable mechanical thermal controller (isolated from the water) and a stainless steel valve stem enclosed in a mounting box. To date we have not experienced problems with hard water deposits. In the event deposits do stop the functionality of your unit, the HWL also carries a 10-year reconditioning/replacement warranty.