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Install Scald Protection

Updated: Jun. 30, 2017

Install safer tub and shower fixtures without changing the valve

FH08APR_SCAPRO_01-2Family Handyman
Achieve scald protection for your tub and shower by installing anti-scald showerheads and tub spouts. You don't have to tear open the wall and replace the valve.

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Easy to install scald protection

Anti-scald showerhead

Replace showerheads and tub spouts with anti-scald fixtures to avoid dangerously hot water.

If the shower water in your bathroom or tub suddenly gets dangerously hot, you’re not alone. My parents have the same problem in their 35-year-old house—someone turning on water in the kitchen or flushing a toilet downstairs changes the water temperature for someone taking a shower upstairs. Scalding water is dangerous, especially for young kids who can’t turn it off. Approximately 3,800 people are injured and 34 people die each year from excessively hot tap water, according to the Consumer Product Safety Commission.

Anti-scald valves have been required by code for years, but older homes may not have them. And putting them in an existing bathroom means tearing open the walls to access the plumbing pipes.

An easier fix is to replace the showerhead and the tub spout with fixtures that have a built-in scald protection valve. To install, simply unscrew the existing showerhead or tub spout, wrap pipe tape around the exposed threads, caulk around the opening for a tub spout, then attach the new fixture. When the water reaches an unsafe temperature, the fixture automatically cuts the water flow to a trickle. Flow resumes when the water cools. Codes may still require an anti-scald valve (not just an anti-scald fixture). Check with your local building inspector.

Look for the fixtures (starting at $25) in home centers. Two manufacturers are American Valve and American Standard.

Anti-Scald Showerhead Interior

An anti-scald valve, built into the shower fixture, keeps the water from becoming dangerously hot.

Required Tools for this Project

Long-handled adjustable pliers

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here’s a list.

  • Pipe joint tape