Cost to Install a Water Hammer Arrestor
Installing a water hammer arrestor means shutting off and draining the line, disconnecting the supply line, then fitting the arrestor between the valve and supply line. It is a moderate DIY plumbing task: placement close to the appliance or faucet causing pipe shock and choosing a compatible pipe diameter and connection type are key details.
Common reasons homeowners do this job
- Banging noise traced to a washing machine
- Banging noise traced to a faucet
- Pressure surges causing pipe shock
- Investigating pipe noise where loose mounting brackets may also contribute
- Adding an arrestor sized for an existing pipe diameter and connection type
DIY or call a pro?
This can be a DIY project, but consider a professional if disconnecting the supply line, adding a new branch with a T-fitting, or selecting a compatible arrestor feels uncertain. Shut off the water supply before starting, and make sure every connection is properly tightened to prevent leaks and water damage.
Frequently asked questions
- Can I install a water hammer arrestor myself?
- Yes, this is a moderate DIY job if the arrestor matches the existing pipe diameter and connection type. Consider hiring help if you are uncomfortable shutting off and draining the line, disconnecting the supply line, or adding a T-fitting for a new branch.
- What makes water hammer arrestor installation cost more?
- The price can rise with job size, labor time, and materials such as a T-fitting or pipe extension. A small job may also include a minimum or trip charge.
- Where should a water hammer arrestor be installed?
- Place it as close as possible to the appliance or fixture causing the banging noise, such as a washing machine or faucet. Identify the noisy fixture first so the arrestor can be installed near it.
- What should I check before buying a water hammer arrestor?
- Check the existing pipe diameter and connection type so the arrestor is compatible. It is also worth checking water pressure and inspecting for loose mounting brackets, since either can be part of a pipe-noise investigation.
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