Under sink reverse osmosis drain line installation confusion about air gap requirements and best connection method.

No clear, simple guidance on whether an air gap is needed and how to connect the RO drain line properly with existing plumbing.

Severity

2Mild

Willingness to Pay

implied

Added

May 8, 2026

Implied Software Gaps

Interactive plumbing diagram tool that analyzes existing setup and recommends correct drain connection

App Concept

PlumbRight RO Installer

A step-by-step interactive guide app for installing reverse osmosis systems. It uses photos of your sink setup to recommend the correct drain connection method (air gap, dishwasher adapter, etc.) and provides local code requirements.

Key Features

Photo-based plumbing setup analysis
Air gap requirement calculator based on local codes
Step-by-step installation video guides
List of compatible adapters with links to buy

Target Users: DIY homeowners and handymen installing RO water filters under kitchen sinks

Revenue Model: Freemium with $4.99 per setup plan; $9.99/mo pro subscription with unlimited guides and code updates

Existing Solutions Mentioned

Dishwasher drain line adapterGarbage disposal adapterAir gap

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