First, there was an examination where there are 84 items to be answered in 15 minutes only. I forgot what that exam was called but it contained basic numerical problems (money, conversion of units, series/sequences) and vocabulary questions. After this, there was an essay-type examination about your knowledge in HVAC and replying to an email sent by a client. There was another essay -type exam where you will give your opinion on companies blocking social media sites on their computers since some employees tend to browse social media in the office instead of working. After all these, the HR officer will interview you.