Siphoning at tub drain when flushing toilet due to improperly configured drain connections.

Existing drain layout causes cross-siphoning between toilet and tub; no product helps him figure out correct connection sequence for PVC replacement.

Severity

2Mild

Willingness to Pay

implied

Added

Jun 16, 2026

Implied Software Gaps

Interactive plumbing diagram builder that calculates correct drain connection order

App Concept

DrainFlow Planner

An interactive diagramming tool that lets homeowners and DIYers design proper drain-waste-vent layouts. Input fixture types and distances, get code-compatible connection sequences and pipe sizing. Eliminates guesswork and prevents siphoning, clogs, and code violations.

Key Features

Drag-and-drop fixture placement on a blueprint canvas
Automatic pipe sizing and vent requirement calculations
Step-by-step connection sequence for waste pipe routing
Code compliance checker based on IPC or UPC

Target Users: DIY homeowners and apprentice plumbers working on residential plumbing renovations

Revenue Model: $9.99 per project plan or $29.99 annual subscription with unlimited projects

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