HVACDiagnostics & Troubleshooting3MediumField Technician$ implied

Diagnosing whether an electronic expansion valve (EEV) is gummed up by leak lock sealant, with no reliable diagnostic data or normal operating specs to compare against.

No published normal operating specs for EEV temperature drop or stepper position, making it hard to confirm if the valve is clogged.

Opp. Score

Severity

3Medium

Willingness to Pay

implied

Added

Jun 7, 2026

Workarounds Described

ohm out sensors and EEV to confirm electrical functionality
weigh out charge and add fresh refrigerant
check display on board for stepper position
open up a different unit to compare stepper position and temp drop

Implied Software Gaps

Real-time diagnostic reference for normal EEV temperature drop and stepper position by system model
Automated comparison of logged operating data against manufacturer specs
Guided troubleshooting workflow for suspected valve contamination

App Concept

EEV Diagnostic Assistant

A mobile app that provides real-time reference data for EEV performance, including expected temperature drops and stepper positions for common HVAC systems. It also logs symptoms and suggests likely causes, reducing guesswork and callbacks.

Key Features

Database of normal EEV operating parameters by make/model
Step-by-step diagnostic workflow for gummed up valves
Log and trend historical system performance
Share diagnostic report with colleagues or manufacturer

Target Users: HVAC field technicians and service companies diagnosing complex refrigeration circuit issues

Revenue Model: $19/mo per technician subscription, with a free tier limited to 5 lookups per month

Existing Solutions Mentioned

ohming out sensorsohming out EEVweighing chargechecking display on board for stepper position

Part of App Idea

HVAC AI Diagnoser

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