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Online HVAC Certifications
If I wanted to move beyond just "knows enough to be dangerous", is there a good online course provider that you would feel good about? I like learning things generally and I want to know more about HVAC systems. I want to know more about my systems, or maybe I'd want to be a helper as a side gig someday.
Basically is there an online HVAC course that would get me enough to know what I'm doing and/or prepare me for certifications?
1 pipe Utica 112 in Cedar Grove, NJ, 1913 coal > oil > NG