User needs to determine the correct size of water hammer arrester to install on 3/4'' Pex A lines feeding outdoor spigots used for sprinklers that cause water hammer when shutting off.

No sizing guide or product recommendation tool specific to Pex A lines and sprinkler systems; user must guess or research manually.

Severity

2Mild

Willingness to Pay

none

Added

May 21, 2026

App Concept

HammerSizer Pro

An app that helps DIYers and plumbers select the correct water hammer arrester size based on pipe material, diameter, fixture type, and system pressure. Input your pipe specs and fixture details; get an instant, code-compliant recommendation with installation tips.

Key Features

Pipe material and size selector (Pex, copper, CPVC, etc.)
Fixture type database with flow rates (sprinklers, faucets, toilets, etc.)
Pressure input to calculate required arrester volume
Compliance with plumbing codes (ASSE 1010, IPC)

Target Users: DIY homeowners and professional plumbers working on residential water hammer issues in the United States.

Revenue Model: Freemium: free basic sizing for simple cases; $4.99 per calculation for advanced features or $9.99/month unlimited access with a library of code references.

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