So I just got my results this morning and I passed the OIT exam on my second try. Honestly I'm still in shock. The first time I went in pretty confident, had been in the industry for three years and figured my hands-on experience would carry me. Scored a 68 and needed a 70. Gutting.
This time around I completely changed my approach. I spent about six weeks using an OIT practice test site daily — like actually timed myself and reviewed every wrong answer instead of just clicking through. The practice questions exposed so many gaps I didn't even know I had, especially around HVAC controls and refrigerant regulations. I also grabbed a study guide that broke down the domains by weight, which helped me prioritize instead of trying to review everything equally.
Biggest exam tips I can share: don't skip the safety and regulatory sections even if you know the field, and time yourself during practice because the real test moves fast. Happy to answer questions if anyone's prepping right now.