HVAC is an industry, not a licence.
There are many different licences people in the HVAC industry can hold. This includes:
| Licence | Authority | ||
| H | Heating | Gas Technician or Oil Burner | Technical Standards and Safety Authority (TSSA) |
| V | Ventilation | Sheet Metal Mechanic | Skilled Trades Ontario (STO) |
| AC | Air Conditioning | Residential AC Systems Mechanic 313D | Skilled Trades Ontario (STO) |
| R | Refrigeration | Refrigeration and AC Systems Mechanic 313A | Skilled Trades Ontario (STO) |
| Other | Plumber and Electrician | Skilled Trades Ontario (STO) |
All licences regulated by Skilled Trades Ontario (STO) require a 3 – 5 year apprenticeship. However, the Heating licences regulated by TSSA are not apprenticeships. You can complete an approved course, pass your TSSA exams with a minimum of 75% and be fully licenced.