After replacing a burnt PCB board on a Navien combi boiler, the baseboard heating is not functioning properly and struggles to maintain heat, with no clear diagnosis available.

Existing diagnostic tools and manufacturer support (Navien) are unresponsive and fail to provide actionable guidance for post-repair performance issues.

Severity

4High

Willingness to Pay

implied

Added

May 6, 2026

Workarounds Described

Contacted colleagues for advice
Flushed system manually to remove air
Relied on Webb for correct part sourcing

Implied Software Gaps

A guided diagnostic tool that systematically checks baseboard heat performance after PCB replacement
A centralized knowledge base for combi boiler repair steps and error codes
Remote expert consultation service for tricky post-repair issues

App Concept

CombiPro Diagnostics

A mobile app that guides HVAC technicians through step-by-step troubleshooting of combi boilers after component replacement. It includes interactive decision trees, manufacturer knowledge base access, and remote expert chat, reducing guesswork and callbacks.

Key Features

Interactive diagnostic flow for post-repair issues
Integration with manufacturer service databases
Remote expert consultation via chat or video
Log and compare before/after performance data

Target Users: HVAC technicians and small service companies that service residential combi boilers, especially Navien units.

Revenue Model: $19.99/mo per user subscription or $149/yr with unlimited diagnostics

Existing Solutions Mentioned

Webb (parts supplier)

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