HVAC Certification Test
Taking an HVAC certification test depends on how far the individual wants to advance. There are actually four tests that can be taken after passing the Core exam. As required by Section 608 of the Federal Clean Air Act anyone involved in the repair, service, maintenance or disposal of appliances that contain refrigerants must be certified in the techniques required for handling refrigerants. Each test deals with the type of equipment the technician will be servicing.
The Core exam deals with the principles of electrical and refrigeration theory. The exam must be taken and passed successfully before you can become certified in other areas.
The Type I test is for those who will service, maintain or repair small appliances. They must be certified as a Type I technician. Small appliances are generally window air conditioners, vending machines and residential refrigerators.
The Type II test is a requirement for anyone whose main job will entail servicing and installing equipment that uses a high pressure refrigerant. This includes air conditioning systems and heat pumps in homes, process refrigeration and grocery store refrigeration.
Type III certification is for HVAC technicians that will be servicing and installing equipment that uses low pressure refrigerant. This is usually units such as chillers.
Each type must be passed after passing the Core test. The Core test can be an open book test or a supervised test without the book. Type I certification can be taken after the Core test and it may be open book or supervised. However, if you plan to take the Type II test, both the Core test and Type I must be a supervised test – not an open book test.
The Universal certification is for those who wish to service all the different types of equipment. In order to obtain Universal certification the Core test and each type must be taken and passed successfully. The Universal certification exam contains 100 multiple choice questions. The Core test, Type I, Type II and Type III each contains 25 questions and in order to pass, a score of 72% or 18 of the 25 in each section must be answered correctly.
When taking the Universal exam if the HVAC technician fails any of the sections but passed the Core test, the certification will be issued for the ones that were passed. For instance, if the Core test is passed and Type I and II are failed and Type III is passed, the certification will be for a Type III. However, when re-taking the Universal exam, the technician only needs to take the sections they failed.
If you believe that HVAC certification is for you, take the classes and get the experience needed to ensure that you are proficient in the area you want to work. Before taking the actual test to become certified, there are practice tests that can be taken to prepare you for the real thing. The best advantage of a practice test is it will let you know what areas you need to brush up on and what ones you already know.