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The Leading Edge of Maintenance | HVAC - A2L Refrigerant

Covers new A2L refrigerants (R-454B, R-32) requiring special black gauges and hoses compatible with A2L. Explains that standard hoses can fail, charging tanks have left-handed threads needing adapters, and emphasizes zeroing gauges before refrigerant...

The Leading Edge of Maintenance | HVAC - Capacitors

Learn how to test single and dual capacitors that power motors (HVAC, refrigerators, pumps), interpret microfarad (UF) readings, and identify failures like bulging. Understand that hard start kits are temporary aids and how to match UF and voltage...