In short
EPA Section 608 certification is a federal credential that lets you buy and handle the refrigerants used in air conditioning and refrigeration equipment. You get it by passing an exam offered by an EPA-approved testing organization - the EPA writes the rule but does not issue the card. There are four levels (Type I, II, III, and Universal). The certification does not expire. Most HVAC programs include it, and it is separate from any state contractor license. Fill out the form to hear from HVAC schools near you.
What Section 608 is
Section 608 of the federal Clean Air Act sets rules for refrigerants to stop them from being released into the air. Under those rules, anyone who maintains, services, repairs, or disposes of equipment that could release refrigerant has to be certified. In practice that means you cannot legally buy refrigerant, or work on a unit in a way that could release it, without the certification.
The rules sit in the Code of Federal Regulations, and the EPA approves the organizations that give the tests. The EPA does not run the classes and does not print the card - the certifying organization does. A helpful detail for your budget: the certification has no renewal cycle, no continuing education, and no expiry date. Once you pass, it stays valid.
The four certification types
| Type | Equipment you can work on |
|---|---|
| Type I | Small appliances, such as window units and household refrigerators |
| Type II | Medium-, high-, and very-high-pressure appliances (for example, home air conditioners and heat pumps using R-22 or R-410A) |
| Type III | Low-pressure appliances |
| Universal | All of the above - the one most technicians aim for |
Source: U.S. Environmental Protection Agency, Section 608 program, including the "Questions and Answers for Section 608 Certified Technicians" page and the technician fact sheet.
How to get certified
Pick an EPA-approved testing organization
The EPA publishes a list of approved certifying programs. Many trade schools are also approved test sites, which is why most HVAC programs have you take the test before you graduate.
Pass the exam for the type you need
It's a closed-book, proctored multiple-choice test. Type I covers small appliances; Type II and III cover higher- and lower-pressure equipment; Universal means passing all sections. If you plan to work on home systems, go for Universal.
Keep your certificate on file
Certified technicians are required to keep a copy of the certification at their place of business, and to keep it for three years after they stop working as a technician. Your employer may also need written proof that they employ a certified tech in order to buy refrigerant.
What it does not cover
Two things people mix up. First, Section 608 is a federal technician certification, not a state license. Some states separately license HVAC contractors - in Ohio, for example, HVAC contractors are licensed through the state's construction industry board - and that is a different requirement with its own experience and testing rules. Ask your state what applies to the work you want to do.
Second, apprentices are exempt from the certification requirement only while they are closely and continually supervised by a certified technician. If you are working on your own, you need your own certification.
Other credentials worth knowing
Beyond the required 608 card, employers sometimes value voluntary credentials. NATE (North American Technician Excellence) is a widely recognized HVAC testing and certification program, and some schools prepare students for it. "HVAC Excellence" is another certification many programs build toward. None of these replace the federal 608 certification, but they can help you stand out when you're applying for your first job.
Source: U.S. Environmental Protection Agency, Section 608 program. Program details are set by the EPA-approved certifying organizations.
Want the 608 card before you finish school?
Ask a school near you whether the test is included in the program and who pays the fee.
Common questions
Does the EPA 608 certification expire?
No. According to the EPA, Section 608 technician certification credentials do not expire - there is no renewal cycle and no continuing education requirement.
Is the EPA 608 test hard?
It's a multiple-choice exam on refrigerant rules, safety, and equipment. The content is exactly what HVAC programs teach, which is why students usually take it as part of their training rather than on their own.
Can I handle refrigerant while I'm still an apprentice?
Only if you are closely and continually supervised by a certified technician. Once you are working on your own, you need your own certification.
Do I need the EPA 608 before I start school?
No. Schools teach you what the test covers and give you the chance to take it, often before graduation. You don't need anything in advance.
Is the EPA 608 the same as being licensed to do HVAC work?
No. The 608 is a federal certification for handling refrigerants. Some states also license HVAC contractors separately. Ask your school what your state requires to work or to run your own business.