There are so many mistakes on this document that it's not even funny. Not recommended. Though working through the problems still I can calculate where he went wrong. I guess you get what you pay for, ten bucks for crap.
Do the multiple choices match the possible solutions? Site looks very legit and has a ton of problems. I don't want to waste time doing the problems and getting frustrated that i'm not getting the right answer. At the very least it shows more of what type of problems we can see on the exam. Thanks for the find.
I finished the breadth part this evening. There are issues with the problem stating 25psia and the answer using 5psia not a major issue but just kind of frustrating. I'm planning on finishing up the HVAC depth tomorrow. It's a good resource, just not well reviewed to make sure numbers carry through.