Cost to Install a Washer Safety Valve – 2021

| Last Updated: August 24, 2021

National Average Improvement and Repair Cost







$ 402

$ 210

Would you do this project? According to our survey, 65% of respondents preferred DIY compared to hiring a pro.

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The average price to Install a Washer Safety Valve noted above is cost data to compare a contractor’s estimate with doing it yourself.

What’s the cost to install a washer safety valve? The contractor cost to install a washer safety valve is $402 vs. doing it yourself for $210 and saving 47 percent.

When your neighbor has a problem, it seems to bring an issue very close to home. So when ours had a near-flooding situation, it got our attention. After checking with our insurance company, we learned many water damage claims are caused by a ruptured or split washing machine hose, the problem our neighbor had.

If the hose is left under pressure and it lets loose while no one is home, water will flow through the house for hours, creating a major mess and repair work to flooring, walls and furnishings. To prevent that from happening you can add a safety valve kit, a leak detection system that automatically shuts off the water whenever it detects a leak in the washing machine.

The safety valve kit allows water to flow to the machine only on demand, so the hoses aren’t left under pressure. The valve kit includes 3/4-inch motorized ball valves for both the hot and cold water inlets, a water sensor placed on the floor and screws to install it.

A plumber will install a water safety valve kit for $402, which includes labor and material. You can buy and install it yourself for $210, the cost of the device, which we found at It is easy to install the device, and you’ll save 47 percent by doing it yourself. You plug the washing machine into the control box of the device and plug it into an electrical outlet. It operates by low voltage wires that run from the box to the solenoids. When you turn on the washing machine, the valves open; they close when the machine shuts off.

That sums it up. Knowing the average cost to install a washer safety valve lets you compare doing it yourself with what you can expect to pay a contractor.

Welcome! We hope you’ll find the job costs of home improvement projects useful when you’re deciding whether to do a job yourself vs. hire a contractor. We’re the authors of 20 home improvement books, most notably Home Improvement for Dummies©, Bathroom Remodeling for Dummies©, Carpentry for Dummies©, Plumbing for Dummies©, and Painting and Wallpapering for Dummies©. Our most recent book Fix It and Flip It is in its second edition. We’ve appeared as home improvement experts on television programs such as CNN, Dateline, the Today Show, HGTV and many others.