1. HVAC Loads and Psychrometrics (18–27 questions, ~23–34%)
Key exam domainIdentify weak areas and improve with focused review.
Start PracticingPass your PE Mechanical HVAC and Refrigeration certification
Free PE Mechanical HVAC and Refrigeration Practice Test
Pass the Professional Engineer Mechanical HVAC and Refrigeration exam with confidence.
Start with a free PE Mechanical HVAC and Refrigeration practice test and build exam-ready confidence for the Professional Engineer Mechanical HVAC and Refrigeration exam.
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1000+PE Mechanical HVAC and Refrigeration Questions
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Everything your PE Mechanical HVAC and Refrigeration certification prep needs
Practice expert-vetted questions, find your weak domains, and turn every mistake into a focused review plan.
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Every question is reviewed by an experienced PE Mechanical HVAC and Refrigeration professional for clarity, accuracy and practical exam relevance.
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Domain analytics show which parts of the exam blueprint are holding you back.
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Study by domain
Practice the PE Mechanical HVAC and Refrigeration exam by domain
2. HVAC and Refrigeration Distribution and Systems (20–30 questions, ~25–38%)
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing3. HVAC Equipment and Components (24–36 questions, ~30–45%)
Key exam domainIdentify weak areas and improve with focused review.
Start Practicing4. Supportive Knowledge (HVAC and Refrigeration) (8–12 questions, ~10–15%)
Key exam domainIdentify weak areas and improve with focused review.
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Frequently asked questions
Straight answers about the PE Mechanical HVAC and Refrigeration exam, the questions, pricing, the free trial, and how this fits your prep.
The PE Mechanical HVAC and Refrigeration exam spans 4 domains - HVAC Loads and Psychrometrics (18–27 questions, ~23–34%), HVAC and Refrigeration Distribution and Systems (20–30 questions, ~25–38%), HVAC Equipment and Components (24–36 questions, ~30–45%), and Supportive Knowledge (HVAC and Refrigeration) (8–12 questions, ~10–15%). Every practice question maps to one of them, so you train on exactly what's tested.
No - and that matters. These are original practice questions written to mirror the style, difficulty, and domain coverage of the PE Mechanical HVAC and Refrigeration exam blueprint. We never distribute actual exam content, so practicing here keeps you fully compliant with official exam policies.
No. PE Mechanical HVAC and Refrigeration Exam Prep is an independent study resource for Professional Engineer Mechanical HVAC and Refrigeration (PE Mechanical HVAC and Refrigeration). It is not affiliated with, sponsored by, or endorsed by the official certifying body or exam administrator.
Every paid plan unlocks the full bank of 1,000+ practice questions covering all 4 PE Mechanical HVAC and Refrigeration domains - HVAC Loads and Psychrometrics (18–27 questions, ~23–34%), HVAC and Refrigeration Distribution and Systems (20–30 questions, ~25–38%), HVAC Equipment and Components (24–36 questions, ~30–45%), and Supportive Knowledge (HVAC and Refrigeration) (8–12 questions, ~10–15%). You can practice the whole bank, filter by domain, or run a timed, domain-balanced exam simulation.
Yes - the bank is maintained against the current exam outline, and questions are revised when the exam changes.
No honest practice platform can guarantee a pass. What realistic practice does is show you - before exam day - exactly which domains are weak, and give you the repetitions to fix them. That's the difference between hoping you're ready and knowing where you stand.
Yes. You get 10 free sample questions with instant feedback - no credit card and no account required.
The free sample shows you the question quality. Paid plans unlock the full 1,000+ question bank, exam-style practice modes, mistake review, and - on Fast Track and Pass Confidence - progress analytics that show your readiness by domain.
No. Every plan is a single one-time payment for a fixed access window - 48 hours, 7 days, or 6 weeks. There is no auto-renewal and no recurring billing.
Match it to your exam date: Final Review (2 days) for an exam in the next day or two, Fast Track (7 days) for an exam this week, Pass Confidence (6 weeks) for a structured run-up.
For most countries, the price you see is exactly what you pay - tax is already included. Where local law requires it to be added separately, it's shown clearly at checkout before you pay, so there are never any surprise fees.
Access is instant after payment and runs for your plan's full window from that moment. When the window ends, your local progress stays on your device - you can buy another window any time and pick up where you left off.
Yes - the whole platform is mobile-first: practice, mistake review, and analytics all work on any phone, tablet, or laptop with a browser. Nothing to install.
Every answer feeds your per-domain accuracy, readiness score, and weak-area list. Instead of re-reading everything, you drill the domains that are actually costing you points - that's what moves a score in days, not months.
Email us any time. The contact link is in the footer. Payments are processed securely by Polar, and active customers can download an invoice from their profile page.
Make sure you're signed in with the same email you used at checkout - access activates within a minute of payment. If it still doesn't appear, email us from the contact link in the footer and it'll be sorted out.
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Drill a single domain, run a mixed session, or sit a full timed exam simulation - pick the mode that fits your study window.
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Focus on one PE Mechanical HVAC and Refrigeration domain at a time - pick it here, then choose a mode.
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A full-length timed exam that mirrors the real PE Mechanical HVAC and Refrigeration test, balanced across every domain.
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Review Mistakes
Re-drill the questions you got wrong.
Review now →Review Weak Domains
Drill your lowest-scoring domains first.
Find weak spots →All Questions
The complete PE Mechanical HVAC and Refrigeration question bank.
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A focused 48-hour cram for candidates sitting the exam in the next day or two.
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6-week access
For candidates with 2-6 weeks before exam day - the complete, confident way to prepare.
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- Everything in Fast Track
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Trusted by PE Mechanical HVAC and Refrigeration candidates
Real feedback from PE Mechanical HVAC and Refrigeration candidates on Reddit.
"took the exam twice. second time i used pemechhvacexam.com and actually worked thru the equipment and components questions until they stopped feeling random. passed. honestly the first attempt feels like a waste in hindsight but whatever, its done."
"wasnt sure this site would be worth it but the practice questions on loads and psychrometrics were pretty close to what showed up on the actual exam. i kept putting off studying and crammed the last two weeks harder than i should have. still passed, so i cant really complain."
"ngl i was skeptical. but the structured study plan kept me from just spinning on the topics i already knew. passed this time. quiet relief is the right way to describe it."