Mechanical systems

Heating, cooling, and moving air.

Modules: 7 modules
Total length: 1h 31m
Handouts: 2 handouts
Assessment: 5-question assessment

A rooftop heating and cooling unit on a flat commercial roof at day's end, one access panel removed and ductwork running to the roof curb.

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7 modules · 1h 31m
2 handouts to keep
Certificate when you pass the assessment
Watch on a phone, on your schedule

What this course covers

Mechanical is the biggest, heaviest, most expensive system in most commercial buildings, and the one most likely to get value-engineered into something that does not work. This course covers HVAC equipment, ductwork, hydronics, and the test-and-balance that proves the system does what it was designed to do.

7 modules · 1h 31m

1HVAC basics: what a system is trying to doFree previewTemperature, humidity, and fresh air. Every system is some combination of those three.8m
2Rooftop units, split systems, and chillersThe major equipment types, where each fits, and what each needs from the building.16m
3Ductwork, sizing, and static pressureWhy undersized duct makes a system loud, expensive, and ineffective.15m

Who takes this

Tradespeople who can already do the work and want to run it
Field leads stepping into a foreman or superintendent seat
People coming into construction from another industry, or starting over
Students and families looking at a career that does not need a four-year degree
Crews being trained by their employer on a team plan

Aaron Gaddy holding a rolled set of drawings under his arm on a jobsite in late afternoon light.

Taught by Aaron Gaddy

30+ years in commercial construction. Every module here comes out of jobs he actually ran — the drawings, the mistakes, and what they cost.

Mechanical systems

What this course covers

7 modules · 1h 31m

Who takes this

Before you start