A technician is uncertain whether to use ground or the C terminal for the second wire on a condenser, lacking a definitive source of truth for wiring best practices.

No authoritative, easy-to-access reference or decision-support tool for field technicians to resolve wiring questions like 'C vs. ground' on the job.

Severity

2Mild

Willingness to Pay

implied

Added

Jun 25, 2026

Workarounds Described

posts on Reddit to ask other electricians
relies on personal assumptions about ground vs. C terminal usage

Implied Software Gaps

Mobile app with authoritative wiring rules and diagrams searchable by equipment type and terminal

App Concept

WireWise Field Reference

WireWise is a mobile-first decision-support app for HVAC and electrical technicians that provides instant, code-compliant wiring guidance based on equipment type, model, and scenario. It replaces guesswork and forum-scrolling with authoritative, searchable diagrams and rules.

Key Features

Search by equipment (condenser, furnace, thermostat) and terminal (C, R, Y, G, ground) to see official wiring rules
Barcode/photo scanning to identify equipment model and pull up relevant wiring diagrams
Side-by-side comparison of common vs. ground usage with explanations
Save and share annotated diagrams for team reference

Target Users: Field technicians in HVAC, electrical, and plumbing service companies (1-50 technicians) who need on-the-spot wiring guidance.

Revenue Model: $12.99/mo per user subscription, or $99.99/yr per user; free tier with limited searches and ads.

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