The installation of ducting, piping, and controls is an art; anyone who tells you differently is an inept ass who hasn’t the slightest clue about the HVAC, industry…or any other industry for that matter. The work is physically demanding, mentally challenging and, if you’re slow, looking for another job you’ll go.
These folks are installing precision systems in the worst weather conditions, at dangerous heights, while working alongside brutish trades such as masons, steel workers and roofers.
Think of their job like; performing heart surgery, while standing on a ladder 12 feet in the air, in brutal summer heat, with someone welding steel I-Beams 20 feet away, while wearing a hard-hat, safety gloves, and a fall protection harness. A good installer is worth their weight in gold. A great installer is worth their weight in R-22. More importantly, a good installer will never worry about being employed.