The planned HVACR pathway connects heat, matter, enthalpy, airflow, electricity, refrigeration, heating, controls, service method, customer communication, and field documentation.
Safety and tools; trade math; heat versus temperature; sensible and latent heat; change of state; pressure and saturation; enthalpy; refrigeration-cycle orientation; electrical fundamentals; airflow; psychrometrics; drawings and service records.
Tubing and piping; modern refrigerant safety; recovery, evacuation and charging under proper authority; control wiring; motors; air distribution; cooling and heat-pump startup; heating systems; maintenance; EPA Section 608 preparation.
Safe test planning; electrical troubleshooting; superheat and subcooling; refrigeration faults; airside enthalpy; heat pumps; gas heat; hydronics; equipment controls and BAS; reliability; estimates and service documentation.
Packaged equipment, AHUs and VAV; VRF; chillers and towers; commercial refrigeration; compressor reliability; loads and selection; TAB awareness; commissioning; low-GWP refrigerants; controls and energy optimization.
Trace conduction, convection, radiation, sensible heat, latent heat, phase change, pressure, saturation, and energy balance with units and reasonableness checks.
Follow the compressor, condenser, metering device, and evaporator; distinguish saturation, superheat, and subcooling; explain what each measurement can and cannot prove.
Work with dry bulb, wet bulb, humidity, dew point, enthalpy, static pressure, ventilation, sensible/latent processes, and airside diagnostic evidence.
Read schematics and trace transformers, thermostats, relays, contactors, capacitors, motors, safeties, boards, and command/proof relationships within the authorized test boundary.
Start with the complaint and intended sequence, define expected values, choose the safest discriminating test, verify the correction, and document the as-left condition.
Use current manufacturer information, record measurements, distinguish cause from recommendation, explain work clearly, and leave equipment safe and complete.
| Training environment | Examples | Boundary |
|---|---|---|
| De-energized component boards | Parts, terminals, diagrams, wiring paths, meter setup, and fault reasoning. | No inference of energized-work authority. |
| Low-energy control trainers | 24-volt thermostats, relays, contactors, safeties, and sequence tracing. | Instructor-controlled equipment state. |
| Mechanical trainers | Refrigeration cycle, heat pump and defrost, airflow/static pressure, psychrometric process, motors, pumps, valves, and coils. | Approved procedures and reset/restoration checks. |
| Supervised OJL | Inspection, maintenance, startup, measurement, troubleshooting, repair verification, and service records. | Employer assignment, qualified supervision, certification, licensing, and site rules control. |
TTS may prepare learners for EPA Section 608 knowledge, but certification must be administered through an EPA-approved certifying organization. Online completion alone does not authorize refrigerant work, energized testing, combustion service, or independent HVAC practice.
TTS has identified a prospective founding HVAC lead with 35 years as a union journeyman and trade experience beginning in the U.S. Navy. Public appointment and instructor assignments will follow written agreement, credential verification, safety-plan approval, and required school review.