Reviews

Dan's review course for the HVAC/R PE exam was indispensable for me. I had a relatively short time frame to study with two little kids at home and one more on the way. The course was focused and very efficient for me to review the necessary material and feel confident going into the exam that I was adequately prepared. I passed the exam on the first try and now I can move on with my career having achieved this milestone.

I also appreciated the personal touch that Dan has on his course. He created the course, he still runs it, and makes himself available for questions. Its not a big corporation where you are just a number, Dan genuinely cares about his students and their success.

I took this course to prepare for the PE exam, and I’m happy to say I passed! The instructor’s teaching style made a big difference — he explained typical problems clearly through video walkthroughs, showed exactly where to find formulas in the NCEES reference manual, and covered a wide range of topics including fluid dynamics, thermodynamics, HVAC, and more.

What stood out most was how practical and focused the instruction was. It helped me build both understanding and confidence. If you’re looking for a structured, well-explained PE prep course, I definitely recommend this one.

This course is excellent at distilling the big ticket items for PE study and keeping your prep time well allocated. The introductory content is great and Dan is not just a smart guy, he's an excellent teacher that knows how to distill concepts clearly and concisely. The practice problems begin simply and then slowly compound additional concepts until you're cranking out very challenging problems. The video call checkins with Dan are very helpful for asking any random questions and more importantly, tracking your overall progress--I always left these calls feeling very hopeful and focused on my progress.

Dan's video solutions on every single problem were instrumental in helping me pass the PE exam. They truly helped me develop a deep understanding of the material and gave me the confidence to roadmap and solve problems effectively, even under pressure and with some challenging problems.

Dan's course not only sharpened my technical skills but also helped build my confidence throughout the entire process. His office hours were incredibly helpful!

I used the full access bundle to study for my HVAC and Refrigeration PE Exam and passed. The practice problems with video solutions were super helpful!

Dan Molloy's HVAC course came as a blessing in my life. From start to finish, the material was well-structured, engaging, and incredibly supportive. Dan broke down complex topics into clear, manageable lessons that made learning not only effective but actually enjoyable and made me think like an engineer. This course gave me the tools, strategies, and understanding I needed to succeed, and I couldn’t be more grateful.

If you're considering taking this course—do it. It’s worth every minute and every penny. It's a one time investment for your career and you will be able to covered that cost in a single shot once you get your PE. Thank you again for creating such a powerful and supportive learning experience!

Dan at Mechanical PE Exam Prep has put an awesome prep course together that is perfect for those whose life circumstances (family, work, etc) require a self-paced program. My career took me away from HVAC, heat transfer, thermodynamics, and fluid mechanics content for a long period of time, so I was revisiting it for the first time in 14 years. I was able to study for 7-12 hours a week for 4 months and pass the Mechanical HVAC PE exam on my first try, thanks to the Mechanical PE Exam Prep course. I really appreciate how approachable Dan was throughout my entire study process, something that was missing from the other programs I was considering. I would highly recommend this course to anyone, regardless of what level of understanding you are starting from, and regardless of how aggressive your study/exam timeline is. Thanks again, Dan!

Dan Molloy has put together a phenomenal PE studying course, focusing on practice problems and retaining material knowledge. I highly recommend this course for anyone taking on the task of passing their PE exam on the first try!

I found the YouTube videos very helpful when studying for my exam. Dan does a great job using test like problems and explaining how to solve them in a way that translates exactly how NCEES wants you to work through. I would strongly recommend watching his videos as you prepare. I did not purchase any of his materials, but had I not passed my exam, it would have been something I would have considered.

Dan Molloy's course is really good and it helped me understanding the basics

There are too many good thing about this course, firstly I never took a course like this, I tried by my own means, like buying books, and studying whenever I could, it makes it difficult because been away from school for a while, I had a lot of questions and it will take more time studying by myself, which is one of the biggest advantages of this course, time saving. Every topic is well explained step by step, saving hours of study. A lot of good problems touching every topic of the PE exam. Office hours, which is amazing, ask questions even from outside sources, fast response from the Professor (Dan), who is very patient. I will totally recommend this course to anyone who wants to pass the PE, you will save hundreds of hours and, maybe hundreds of dollars in books and exam attempts. I am very happy and proud to have passed the exam and all thanks to Dan's course, which helped me better prepare. Forgive my English if I made any grammar mistakes. Thanks for everything Dan

Thanks a lot, Dan. The course helped me to pass the PE exam. The fundamentals are explained in detail with examples of practical application. The practice problems help you prepare for the exam. Would highly recommend the course to people (freshers or repeaters) working towards their PE certification.

I tried several different programs for both FE and the PE (Mechanical) study prep. I will say this with all honesty, Mechanical PE Exam Prep is one of the best out there. The questions are very close to the type you will see on the exams. In most cases they are a bit harder, and will prepare you well. There are video answers for every question, so you will get more context in the answers. Dan Molloy is also one of the most accessible experts, and is always there to provide guidance, or more context if needed. Do yourself a favor and look into Mechanical PE Exam Prep. You will not be disappointed.

A few days ago I got the good news that I passed the PE Mechanical: HVAC and Refrigeration exam.

It was a long road of study and sacrifice but I firmly believe that without the help of the program offered by Eng. Dan Molloy: HVAC & Refrigeration Full Access Bundle I would not have made it.

I analyzed other programs that offered support and help online, but I saw Dan's videos on youtube and I was convinced because of the clear and effective way to explain the problems and I did not regret it.

The program has more than 300 exercises that are explained step by step by Dan who is an excellent teacher and guide. Therefore the program helps you to improve your knowledge, build confidence and prepares you for the exam.

To those who are still looking for a program on the internet to help you prepare for the PE exams, I recommend 100% the programs that Dan Molloy has, they are a success and you will not regret it!

Dan provides exceptional content that was instrumental in helping me study and build a solid foundation in many PE topics. His resources were invaluable, I couldn’t have done it without them.

The content, videos, archived Q&A, and live Q&A were all helpful. I took two of the paper versions of the test using one study program and failed both times. I tried another study program and failed the next two computer based tests. I stumbled upon Mech PE Prep by accident (thankfully) and passed on my 5th time. If this program helped me finally pass the exam it can help anyone. I never thought I would pass it, I just wish I would have found this program sooner.

It was a well-designed course. The main practice problems in each module were slightly challenging than what came on the exam, but they were helpful in revising the concepts and making you ready for worst case scenario. Practice exam given by Dan was also really helpful and was much closer to the real exam in difficulty level. All in all, I really enjoyed Dan's course. Being able to communicate with him in office hours if I had any issues while solving different problems was a huge bonus.

In my opinion, this course is rich with valuable problems and answers. After completing it, I felt confident enough to take the exam. I took it and passed! Thank you, Dan!

Dan's Mechanical PE Exam Prep was extremely helpful on my journey to pass my PE exam. Dan always encouraging critical thinking, provided explanation, and simplified solutions for engineering problems.

Passed PE with Dan Molloy- Full Bundle. Definitely better than Engineering Pro Guides (too generic) and PPI (too complex)- failed using those courses. I need a better teacher and program. This course is way better structured, more interpersonal, more in-depth, and specifically dedicated to HVAC PE versus the other programs. It’s not only allowing you to be pass the exam but to develop better habits.

This course was super helpful in my studying for the PE exam. Dan provides you with loads of practice problems with detailed video solutions and he's very easy to contact with any questions including his biweekly office hours. I went into studying needing some structure and a game plan, and this course was exactly what I needed

I used the PPI2Pass previously and it did not work for me, so I tried Dan's program. I had the knowledge and understanding, but my biggest hurdles were test-taking confidence and time management. I contribute my passing success to Dan's explanations and how far into the details he went regarding the concepts and especially his mental approach to each problem.

Plus, his model of paying once and using the resource material for as long as it takes really took the pressure off. Don't waste your money on the other programs. Dan Molloy really has an amazing program!

I cannot speak highly enough for the quality of instruction and value provided in the Mechanical PE Exam Prep. My experience as a mechanical engineer is primarily as a project manager, meaning I have little experience with hands-on design or the need to engineer anything. This gap in knowledge was made extremely obvious once I started studying for the exam. Fortunately, Dan's instruction and step-by-step tutorials/videos helped me fill these gaps and successfully pass the exam.
Another huge benefit is lifetime access. During the middle of my prep, my family suffered a tragic loss, and I was forced to take a few months off from studying. Fortunately, I was able to dig back in once I was ready.

This was a super helpful program to help me pass the HVAC PE. I studied for about 4 months, the month and a half leading up to the exam I really turned up the heat.

I went through all of the practice problems and then took practice test. Reworked the practice in the sections I didn’t do to hot on the practice exam. Took the NCEES exam and then the second practice exam.

I only used this and the and one of the NCEES practice tests and felt pretty good coming out of the exam. I passed the exam on the first try.

The only con I have for the program was I wish there was data after the practice exams. For example on my first practice exam I got like a 52% I wish there would have been a clear breakdown of how I did per type of question. However, that is pretty minimal gripe.

Where this course really shines is getting you able to navigate the reference manual. That is probably the most important part when taking the PE. If the PE is required for you job, this is a solid course for getting you ready.

11/10, couldn't have had a better prep course/teacher. Dan truly goes above and beyond with this course. I would strongly recommend his course to anyone taking a Mechanical PE exam. Dan did a great job supporting me as I prepared for the HVAC PE exam. His course game me so much confidence when it finally came to exam day.

Can't say enough about this program! There isn't anything else out there that can compete with this one. Dan's program helped get me over the top after 3 previous failed attempts. Now I am a Licensed PE and am ready to take my career to the next level! It's worth every penny you will spend I promise!

There is simply not a better exam prep option out there. I took the HVAC and Refrigeration exam and passed it on the first try, with confidence, thanks to Dan's course. There are two things I find especially unique about the way Dan's course prepares you better than others. First, Dan has incredibly detailed, written out, and narrated solution to all of his problems. He explains them like a human being, and gives you real world examples of how to think about concepts. This video narration also makes it easy to start a solution, get a hint, then pause it and solve the problem on your own. This technique was incredibly useful to me. Second, Dan makes himself available as if he's your actual professor! I shared numerous email back-and-forth with Dan where he answered all my questions and gave great advice. His office hours are crucial as well. There's nothing worse than getting stuck on a problem outside of Dan's course and not knowing where to look for an explanation of why it isn't making sense to you.
I can't recommend this course enough for anyone trying to pass the exam!

Dan’s course offers a great variety of exam-like as well as challenging practice questions, with in depth solution videos without skipping any steps. Completing this course prepares you to answer exam problems with ease like muscle memory. This course was instrumental to my success in passing on the first attempt.

Great program that is highly digestible. Dan is truly an amazing instructor, he breaks down complicated concepts in organized by test specification topics videos. I found solving the practice problems on my own and then going back to watch his solutions videos the most useful. If I was unclear on something, having access to Dan through the office hours added a lot of value beyond just "getting the right answer". The full access package was well worth the value.

Dan's program not only provided me the tools to study efficienty and pass the test on the first try, it also gave me invaluable insights on how to practice as a professional engineer. His teaching style is better than most of my previous college professors. His reasoning is clear, concise, and practical. The program interface is easy to use and navigate. I am very glad I underwent the study process with Dan, and recommend other prospective PE candidates do the same.

This Exam prep course was a key resource for my success passing the PE exam in the first try. The way Dan explain everything is easy to understand and to relate, which helps you to remember it every time you encounter a similar situation. Another amazing resource is his companionship during the process with his one-on-one sessions and the office hours. Those two resources where also very important for me. I really recommend you to take this course if you are taking either Thermo-Fluids or HVAC Mechanical exams…it is worth every penny.

Great course layout that is focused on passing the PE which is question-heavy. I liked this methodology as the more you solve, the easier it gets.
• There are great solutions that allowed me to learn exactly how to attack and solve the questions.
• I went through the entire course and answered all the section questions.
• It took me about 4 months to cover all the material while working and raising a family.
• Each person can tailor this, but I would spend about 1-3 hours chipping away at problem sets a night and longer study sessions on the weekends.

Dan's course was great, covered all the topics in a critical systems environment. Highly recommend.

Dan does an excellent job of being readily available to answer questions. The course itself is well-organized, and does more than enough to prepare for the HVAC and Refrigeration PE Exam.

Was previously using the School of PE class for a month to study for the PE HVAC. After wasting 30-40 hours of my time and getting no where I switched over to Dan's course. It blows the other course out of the water. I cannot recommend this course enough. Thanks Dan!

The course works! Follow the recommendations and put in the work.

He does a great job with his content and you can tell that he put in a lot of effort to ensure that candidates have a firm understanding of the fundamentals.

Awesome teacher!

Excellent prep course!

When looking for a way to prep for the PE exam for HVAC and refrigeration, I was looking for quality course that worked with my busy schedule and would help me to relearn all the content I needed to pass. I found that with Dan Molloy's full bundle and thanks to this course I passed the exam on the first attempt. Not only did Dan's course help me to navigate the exam (test taking tips, using the reference manual, healthy study habit tips, etc.), but it also helped me to truly understand the content in a way I will carry forward in my career. I highly recommend this course.

Dan's course was the difference-maker in my studying. Before enrolling in his course I was aimlessly sifting through my old college exams and homework. His course got me on track to easily pass the PE-HVAC exam on my first try after 4 months of studying (4-5hrs per week). Highly recommend!

I got Dan's full access bundle for HVAC & Refrigeration. Being busy at work and not finding enough time to concentrate on the PE test, Dan's course helped me cross the line with ease. I loved the daily insights as they serve as a good refresher on the basics and also to understand newer concepts better. All the video solutions, office hours, and one-on-one sessions are definitely worth every penny. Good luck with your test and preparation!

Dan was very responsive and helpful when I was studying for the PE. His course was concise and clear which made studying a lot easier. After completing most of his modules in a three month period I was able to pass the Mechanical PE.

I purchased the TFS full access bundle from Dan 4 months in advance of my exam. I worked the entire bundle and made sure I knew how to do every problem in it. Following Dan’s advice, once I finished the bundle, I took the NCEES practice exam.
I did the work and followed Dan’s advice and PASSED!
I would highly recommend this study material. TRUST DAN!

Dan designed the prep course very neat and perfect. It fulfills the purpose. I was really afraid prior to experience the journey. But Dan's support made it pretty easier for me to pass the PE exam successfully. I am recommending everyone to try his courses.

Dan’s Thermal & Fluids Systems full access bundle was the main reason why I passed the PE. Dan is a great teacher and guides you through problems without skipping steps or combining unit conversions. The main selling point is the lifetime access to the material (Fundamental review, practice problems, daily insights, and office hours) no other course comes close to this offer. Anytime you need a refresher after you pass you can always jump online and review! The course is worth the investment, and I would recommend it to anyone who is pursuing the PE exam. Thank you again Dan for helping me achieve my goal!

I used the HVAC Full Access Bundle to study for my PE exam in 2023, which I passed on the first attempt. I already knew how to study, but I didn't know what to study or where to get started. The program walked me through everything that I needed to learn for the exam. I definitely had to put in the hours to study, but I don't think I could have done this on my own. Dan was also very responsive with any questions that I had regarding the exam material, exam process, and the best way to use the Full Access Bundle.

This course is excellent. Pursuing a PE some 20 years after graduating, I passed my PE exam on the first try. The material in the course was clear, detailed, and sufficient. I highly recommend Dan's course, certainly over PPI and other courses I considered. He's an excellent teacher and very accessible for those more tenacious problems. Note I still found surprises on the exam, but the goal was to pass it, and the goal was achieved. Consider purchasing NCEES practice tests if you have time and want more confidence.

Thanks to Dan Malloy for this course and for the personal interaction which helped me decide how to approach the study and preparation for the exam. I know that it would have taken at least 4 or 5 times longer to study the material if I had done this on my own, which would have probably discouraged me from pursuing it. I also feel like I know the material in and out, not just barely enough to scrape by. The way the problems are laid out and real-world solutions are incorporated work really well. It not only refreshed the information (from 18 years ago for me) but also introduced the multiple rules-of-thumb and industry practices that are required to pass the exam and perform the work more effectively on the job. I highly recommend this course to anyone wanting to pursue their license.

I used this exam preparation in addition to the NCEES practice exams. I left the exam feeling confident that I had passed on the first try.

Dan's HVAC course was exactly what I needed! I had taken the PE before with a prep course from another company and failed. Dan explains things well, is accessible for questions and shows he really wants you to pass

I highly recommend the HVAC and Refrigeration full access bundle. This course/program helped me to pass the PE exam. Dan really explains the concepts. The practice problems/modules give you the tools necessary to pass the exam. I followed Dan's advice and program. Thanks so much Dan!!!