Bathroom · Entity

Shower Mixing Valve

A pressure-balanced or thermostatic valve that mixes hot and cold water and protects against sudden temperature swings.

Quick answer
Shower Mixing Valve: A pressure-balanced or thermostatic valve that mixes hot and cold water and protects against sudden temperature swings. Typical cost: $120–$700 hardware; $300–$1,200 installed..

Why it matters

Code requires anti-scald valves on all new showers; thermostatic versions also remember your preferred temperature.

Typical cost
$120–$700 hardware; $300–$1,200 installed.

Pros

  • Required for code on new construction
  • Thermostatic versions add comfort

Cons

  • Cartridge failures cause sudden cold or hot bursts

Common uses

  • Every modern shower

Alternatives

Two-handle (no longer code-compliant on new installs)
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Frequently asked questions

Pressure-balanced or thermostatic?
Thermostatic is worth the upcharge if you can afford it — way more precise.
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