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Mechanical
HVAC, piping & rooftop equipment
HVAC install coordination, refrigerant handling and start-up commissioning.
4 lessons published1 QC lessons2 safety lessons1 loss-prevention
Lessons in Mechanical
quality control 8 minFREE
Material Verification Before Installation
Verify materials match approved submittals before installation begins.
v1.3 · reviewed 2026-08-01 · by James O'Brien
Open lesson
loss prevention 6 minFREE
Load Securement for Fleet Vehicles
Secure every load properly to prevent public injury, cargo loss and DOT violations.
v1.0 · reviewed 2026-08-05 · by Frank Marlow
Open lesson
safety 8 min
HVAC Refrigerant Handling Safety
Handle refrigerants safely — protecting worker health and the environment.
v1.1 · reviewed 2026-07-15 · by Alex Kim
Open lesson
safety 5 minFREE
Ladder Safety — Pre-Use Inspection
Inspect every ladder before use and follow three-points-of-contact.
v1.2 · reviewed 2026-06-10 · by Frank Marlow
Open lesson