I used AHIT and it got me to where I needed to be. To be honest, I found the video tutorials rambling, amateurish, lacking in meaningful content (watching a talking head read from a script is not my idea of effective use of the medium), and not aligned with the printed curriculum. I gave up on the videos and concentrated on the printed study guides.
I have nothing to compare AHIT to, but I think it’s safe to assume that there will be flaws and drawbacks in any curriculum. The information is there in the study guides, but there was the occasional apparent contradiction, omission, and outright inaccuracy. The online quizzes were sometimes aggravating, with typos galore and other errors in formatting and execution. The impression was that they were assembled by a third party and never really tested by anyone.
I did find it very easy to get in touch with educational support at AHIT, so that’s a big plus.
I likened the experience to being taught to swim by being thrown into the swimming pool, but that’s probably a good thing, because from what I have seen in this business you have to be ready to find the information and figure it out on your own. Spoon-feeding would not be good preparation for a career as an inspector.
So, pluses - AHIT training (and use of every free prep exam I could find) got me through the testing process for my license, and they have very good support both during and after should you have any questions preparing a report.
Minuses - Disappointing video modules and quizzes, and study guides could use updating, IMO.