Technicians Toolkit

All-in-one toolkit of error codes, wiring diagrams, calculators, and business tools for HVAC/electrical techs.

iOSApp Store (IN)★ 5.0 · 5 ratingsfreeGlobal

Technicians Toolkit is a free all-in-one app for HVAC, electrical, and mechanical professionals, combining a database of error codes, wiring diagrams, and sensor data with HVAC load and duct-sizing calculators. It also offers basic business tools like customer and invoice management, plus articles, quizzes, and video courses for ongoing training.

Website iOS

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