The Rinnai MC-601-W universal water controller gives homeowners convenient digital temperature control of their Rinnai tankless water heater. With its clear interface and compact size, it allows you to set your desired water temperature, monitor system diagnostics, and integrate up to four controllers per heater for added flexibility. Designed to work seamlessly with compatible Rinnai units, it supports easier use and precise control of your hot water delivery.
From adjusting your water set-point to reviewing system status, this controller helps optimize comfort and hot-water performance. It can serve as the “master” for priority control when multiple units are connected, enabling tailored configuration across bathrooms, kitchens, or laundry zones. With installation by a qualified contractor and compatibility with most Rinnai tankless models, it supports reliable operation and improved system management.
Compact and easy to install, the MC-601-W is built for long-term use in residential settings. The modern white finish blends with most interiors, and its design simplifies upgrades or replacements in existing installations. Enhance your hot water system with this dedicated controller for cleaner operation and better convenience.
