The HVAC industry has spent years talking about the technician shortage. Forty thousand job openings per year, a workforce where more than half of current technicians are over 45, and training programs that cannot produce graduates fast enough to fill the gap. That story is well documented.
But a second shortage is building behind it — and it may prove more structurally damaging in the long run. The industry is running short of qualified instructors.
The instructor pipeline problem: Doug Smiley, manager of technical training at Lennox Residential HVAC, framed it precisely in a recent ACHR News report: the same demographic wave that is pushing experienced technicians toward retirement is also depleting the instructor pool. The people most qualified to teach the next generation of HVAC technicians are the same people leaving the workforce.
The knowledge gap compound effect: This is not just a quantity problem. Experienced instructors carry institutional knowledge about equipment behavior, field diagnostics, and system integration that is difficult to document and nearly impossible to transfer quickly. A first-year instructor who learned HVAC under the A2L transition does not carry the same depth of knowledge as someone who spent twenty years diagnosing R-22, R-410A, and R-454B equipment across a full range of commercial and residential applications.
The A2L transition makes it worse: The refrigerant transition to A2L equipment has created an urgent need for instructors who understand the specific safety, handling, and diagnostic requirements of mildly flammable refrigerants. Many existing instructors completed their own training under R-410A and R-22 frameworks. Updating curricula, acquiring compliant training equipment, and building hands-on A2L competency across a teaching staff takes years, not months.
What shops and manufacturers can do: The most direct response available to individual contractors is to formalize internal training programs and identify experienced technicians who can mentor newer hires. This does not require a training facility or formal curriculum. A structured pairing of a lead tech with an apprentice, with defined milestones and regular skill assessments, builds teaching capacity inside the business while retaining the knowledge of approaching-retirement technicians.
At the manufacturer and distributor level, the companies investing in instructor development programs now are the ones whose dealer networks will be better positioned in three to five years. This is a competitive differentiator for OEM loyalty programs, not just a workforce responsibility.
