AK HVAC breaks down the important ones: what they are, why you need them and what they say about you. Different states and locations require different types of licenses, as well as different amounts.
Certifications are not necessarily required to perform HVAC technician work, but they do look good on your resume, they expand your knowledge, they make you a better technician and make you much more marketable and when you’re looking for more HVAC work.
In AK HVAC’s own words, the short of it is that if you get opportunities to get licenses or certified, take them.
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