Homeowners unable to diagnose and fix water pressure spikes in plumbing systems

Homeowners experience sudden, unexplained water pressure spikes after using cold water that persist until they manually release pressure through external hose bibs, causing confusion and concern about potential plumbing damage. Current solutions require expensive emergency plumber visits or trial-and-error troubleshooting without understanding root causes. DIY homeowners lack accessible diagnostic tools and clear guidance to identify whether the issue is a faulty pressure regulator, thermal expansion, or check valve malfunction.