HVAC & Refrigeration PE Exam

331 Practice Problems.
Every Topic.
Every Solution.

The HVAC & Refrigeration Practice Problems eBook gives you everything you need to master exam-style problems — at your own pace, on your own schedule.

★★★★★ Excellent · 112 reviews
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🔒 Secure checkout  ·  Instant access  ·  Questions? Email Dan
HVAC & Refrigeration Practice Problems eBook

The practice problems eBook is the core study tool used by hundreds of engineers who’ve passed the Mechanical PE HVAC & Refrigeration exam. Written by Dan Molloy, PE, every problem is original, exam-caliber, and comes with a detailed step-by-step written solution.

500+
Engineers PE-Licensed
across MPEP programs

Built for One Purpose

📝
331 Exam-Caliber Problems
Original problems written specifically for the HVAC & Refrigeration PE exam — not recycled textbook content.
✅
Full Written Solutions
Every problem has a detailed step-by-step written solution. No answer keys. No shortcuts.
🔍
Key Search Terms
Every problem flags where to find the relevant formula or table in the NCEES handbook — exactly how you’ll work on exam day.
📋
2 Full Practice Exams
Simulate real exam conditions to identify gaps and build exam-day confidence before it counts.
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Is This eBook Right for You?

✓ You’re studying for the Mechanical PE HVAC & Refrigeration exam
✓ You want a structured set of exam-caliber problems with full written solutions
✓ You’re working independently and don’t need access to video solutions or technical Q&A
✓ The Full Access Bundle isn’t in the budget at this time

Topics Covered

01 Thermodynamics
02 Fluid Mechanics
03 Psychrometrics
04 Heat Transfer
05 HVAC Systems
06 Systems & Components
07 Supporting Topics

What Engineers Are Saying

★★★★★

“After using the Mechanical PE Exam eBook (HVAC & Refrigeration) as my primary study material, I passed the PE Exam on my first try! I did every problem in the eBook at least twice, and because of that, I finished with an hour to spare!”

— Benjamin Savoy, PE
★★★★★

“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.”

— Mark Blanchette, PE

Written by a PE, for PE Candidates

Dan Molloy, PE

Dan Molloy, PE

Dan is a licensed Professional Engineer and the founder of Mechanical PE Exam Prep. He wrote every problem in this eBook — and every solution. His focus: exam-relevant problems with explanations that actually make sense, not just answers. Hundreds of engineers have passed the PE using his materials.

eBook vs. Full Access Bundle

Practice Problems eBook Full Access Bundle
331 original practice problems✓✓
2 full-length practice exams✓✓
Detailed written solutions✓✓
Key Search Terms (all problems)✓✓
Step-by-step video solutions—✓
Bi-weekly live Office Hours—✓
Monthly 1-on-1 check-in calls—✓
Print edition of the book—✓
Lifetime Access—✓
Pass Guarantee—✓
Price$649$1,999
See everything included in the Full Access Bundle →
📦

Want the Complete Package?

This eBook is included in the HVAC & Refrigeration Full Access Bundle ($1,999). The bundle adds everything on top of the practice problems:

  • Step-by-step video solutions for every problem
  • Bi-weekly live Office Hours with Dan
  • Monthly 1-on-1 check-in calls
  • Lifetime Access
  • Pass Guarantee
  • Private Facebook Group
  • Print edition of the practice problems book
See the Full Access Bundle →

Ready to Start Studying?

Get instant access to 331 exam-caliber HVAC & Refrigeration practice problems.

$649
Get the eBook Save 10% Pay with Bitcoin
🔒 Secure checkout  ·  Instant access  ·  Questions? Email Dan

Frequently Asked Questions

Is this the same eBook included in the Full Access Bundle?
Yes. The content is identical. The bundle adds video solutions, live Office Hours, 1-on-1 coaching, Lifetime Access, and a Pass Guarantee.
Is this a physical book or digital?
This is a digital eBook. After purchase, you’ll get instant access through the Thinkific learning platform — with lifetime access, no expiration. The print edition is included exclusively with the Full Access Bundle.
Can I apply the eBook price toward the Full Access Bundle later?
Yes. If you decide to upgrade, email Dan at [email protected] and he’ll give you a credit for what you’ve already paid.
Are the problems aligned with the CBT exam format?
Yes. Every problem is solved using the NCEES Mechanical Reference Handbook PDF, with Key Search Terms called out so you can practice locating information quickly — exactly how you’ll work during the computer-based exam.
How hard are the problems?
Most are written to be as hard as actual exam problems or slightly harder. Every problem has at least one key insight embedded in it, and very often two or three.
HVAC & Refrigeration Practice Problems — 331 problems, instant access Get the eBook