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Plumbing, HVAC, Electrical, or other field serviceDiagnostics & Troubleshooting3MediumHomeowner or Plumber$ implied

Navien tankless water heater installed to replace two tanks is not properly recirculating, causing 2-3 minute wait for hot water at all fixtures.

The recirculation system is not working as expected despite the setting; likely incorrect piping layout.

Severity

3Medium

Willingness to Pay

implied

Added

Jun 26, 2026

App Concept

RecircFlow Advisor

A diagnostic tool for plumbers and homeowners to troubleshoot tankless recirculation issues. Uses input about pipe layout to suggest optimal recirculation loop configurations, including where to connect the return line.

Key Features

Input existing pipe diagram or describe layout
Generates corrected plumbing schematic
Step-by-step troubleshooting checklist for common recirculation failures
Integration with product manuals (e.g., Navien)

Target Users: Plumbers and homeowners installing or troubleshooting tankless water heater recirculation systems

Revenue Model: $9.99 per diagnostic report or $49/year subscription for unlimited use

Existing Solutions Mentioned

Navien A2 with recirculation mode set to EXT

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