Are thermostatic mixing valves required in private residences?

Hi Injun29

Plumbing code requires that all private residences have single lever, temperature and pressure balanced valves in place for showers/tubs.

However, thermostatic mixing valves are NOT a requirement, just another option available to homeowners. These are usually more expensive to purchase/install and repair... ;)

Here is a link that discusses both types of valves:

Pressure Balance vs. Thermostatic Valves [Archive] - Terry Love's Plumbing & Remodel DIY forum

Mark