Guidance page · United States
HVAC Technical Training — United States
Written for US residential and light-commercial technicians preparing for EPA 608 and NATE-style assessment, and for crews moving onto A2L equipment.
- Interactive decision labs
- Built by working technicians
- Path-based verifiable certificate
- Exam preparation only
- Worldwide online
Who the authority is here
- US EPA (Section 608)
- Refrigerant handling certification for technicians who open a sealed system.
- Issues: The EPA 608 Type I, II, III and Universal certification, via approved test proctors.
- NATE
- Voluntary technician knowledge certification across specialties.
- Issues: NATE Core and specialty certificates, via NATE-approved testing organisations.
- State and local AHJ
- Contractor licensing, permits and mechanical code enforcement (IMC / NEC references).
- Issues: Contractor and journeyman licences.
Preparation scope
What this training prepares you for
- EPA 608 Core, Type II and Universal question practice with worked explanations.
- NATE-style knowledge practice across airflow, electrical, refrigeration and heating.
- A2L (R-454B, R-32) identification, ventilation and ignition-source control.
- Rooftop-unit sequence of operation, economizer and gas-heat ignition diagnosis.
What we do not issue
- We do not issue EPA 608 certification — only the EPA-approved proctor does.
- We do not issue NATE certificates or any state contractor licence.
Where to start
- Path A — Residential HVAC Service & Diagnostics
- Path C — Commercial HVAC (RTU focus)
- EPA 608 certification hub
Free practice test included
Free graded labs for this market
Practice notes for this market
- A2L equipment is now shipping in volume: mildly flammable classification changes storage, leak checking and service-area ventilation.
- Recovery, evacuation and record-keeping expectations follow Section 608 rules — confirm current thresholds before you charge or recover.
Always verify current requirements with the authority in your jurisdiction before applying.