A plumber discovered that both hot and cold supply lines to a shower valve are connected to the same red PEX tube, causing the shower to output only one temperature, and the entire PEX installation is illogical and must be redone.

No existing solution addresses the need for a tool that helps plumbers quickly identify and document cross-connected or incorrectly labeled PEX lines during installation or troubleshooting.

Severity

4High

Willingness to Pay

implied

Added

May 11, 2026

Implied Software Gaps

A tool that can verify proper hot/cold supply connections without destructive testing

App Concept

PEXFlow Inspector

PEXFlow Inspector is a mobile app for plumbers that uses a combination of thermal imaging and pressure sensors to map and verify hot and cold supply lines in real-time. It automatically flags cross-connections and generates a color-coded diagram of the plumbing layout, saving hours of manual tracing and rework. Unlike generic thermal cameras, it integrates with job documentation and provides step-by-step correction guidance.

Key Features

Real-time thermal and pressure-based line mapping
Automatic detection of cross-connected hot/cold lines
Color-coded diagram generation for documentation
Integration with job management and invoicing software

Target Users: Plumbers and plumbing contractors, typically sole operators or small-to-medium companies with 1-10 technicians, working on residential or commercial new construction and renovations.

Revenue Model: $49/mo per technician subscription, with a $149/mo team plan for up to 5 technicians including cloud storage and job history.

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