A Contractor’s Guide to Safer Hot Water Systems: Why Thermostatic Mixing Valves Matter

WeSupplyTrades Team12/11/2025

Thermostatic mixing valves (TMVs) are essential for delivering safe, consistent hot water in both residential and commercial plumbing systems. In this featured article from Resideo, you’ll learn how TMVs prevent scalding, support code compliance, improve hot water efficiency, and stabilize outlet temperatures even when demand fluctuates. The piece breaks down where TMVs should be installed, how they function inside a system, and why they’ve become a must-have for modern plumbing design.

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Resideo UMV500 Thermostatic Mixing Valve

A popular point-of-use mixing valve that helps regulate water temperature for sinks, showers, and other fixtures. The UMV500 supports scald prevention and consistent performance which is ideal for contractors upgrading or replacing existing systems.

Resideo AMX Series Thermostatic Mixing Valves

A versatile TMV line designed for residential and light-commercial jobs. The AMX Series improves hot water safety, helps maintain stable temperatures, and supports code compliance in mixing applications across the system.