HVAC technician cannot get two-zone system (EWC board, dampers, T6 thermostats) to maintain consistent temperatures; system works intermittently and behaves erratically despite replacing the control board and verifying thermostat settings.

Existing equipment (EWC zone board, thermostats) lacks reliable self-diagnostics or wireless communication to identify why zone temperatures are inconsistent; technician must manually verify settings and swap hardware with no clear root cause.

Severity

4High

Willingness to Pay

implied

Added

May 25, 2026

Workarounds Described

verified settings manually at thermostats
changed out EWC board for updated BMPlus
posted on Reddit asking for help

Implied Software Gaps

Mobile app that wirelessly reads zone board status and logs intermittent faults
Automated diagnostic tool that correlates zone temps with equipment signals to pinpoint failures

App Concept

ZoneSense Diagnostic Tool

A mobile app + diagnostic dongle that plugs into zone control boards (EWC, Honeywell, etc.) to monitor real-time zone temperatures, damper positions, and equipment signals. It automatically logs data, detects intermittent faults, and suggests likely causes, saving technicians hours of guesswork.

Key Features

Plug-in diagnostic dongle compatible with common zone boards (EWC, Honeywell, etc.)
Real-time dashboard showing zone temps, setpoints, damper states, and equipment relay signals
Automatic fault logging and trend analysis to catch intermittent issues
Guided troubleshooting steps based on detected patterns

Target Users: HVAC service technicians and contractors who install and troubleshoot zoned residential HVAC systems (single-family homes, small commercial)

Revenue Model: $49 per diagnostic dongle (one-time) + $19/month subscription for advanced analytics and cloud logging

Existing Solutions Mentioned

EWC BMPlus boardHoneywell T6 WiFi stats

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