HVAC - Heating, Ventilation, and Air Conditioning

I've been lurking on this forum for months while studying and I finally have good news to share: I passed my 313D - Residential Air Conditioning Systems Mechanic Certification on the first try! Quick background: I've been in hvac for about 3 years but this was my first time taking a formal...

A question I had before I started studying was: are these online practice tests actually representative of what shows up on the real 313D exam? After going through the process, here's my honest take. Short answer: pretty close, but with some important differences. The practice tests on here...

I failed my first attempt. Not by much, but enough to have to reschedule. Here's what went wrong and how I fixed it for attempt #2 (which I passed). Mistake 1: Skimming the question The 313D exam is full of questions with words like "EXCEPT," "FIRST," "BEST," or "MOST important." I was...

I've been compiling resources as I study for my 313D - Residential Air Conditioning Systems Mechanic Certification certification and figured I'd share what I've found. All free unless noted. Practice Tests: PracticeTestGeeks — most comprehensive collection I've found, good question...