Comparison

HVAC School vs EPA 608 Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

HVAC School

This app serves as a comprehensive resource for HVAC technicians, offering a podcast, tech tip articles, and interactive calculators. It aims to enhance knowledge of HVAC theory, industry updates, and essential mathematics for both current and aspiring professionals.

Highlights
  • HVAC School podcast episodes
  • Tech tip articles by professionals
  • Interactive HVAC equation calculators
  • Industry knowledge and theory
  • Up-to-date industry information
Features
Read full description

The app that helps you remember some things you forgot along the way, as well as helps you remember some things you forgot to know in the first place. For all current and aspiring HVAC technicians: HVAC School is the premiere source for knowledge and success in the HVAC industry. With this app you can: * Listen to all episodes of the HVAC School podcast, a podcast committed to bringing you relevant and up to date knowledge of the HVAC industry and what it means to be an HVAC technician. * Read tech tip articles written by industry professionals on various topics to help build your knowledge base and understanding of HVAC theory * Interact with calculators that employ common HVAC equations to help build your understanding of important HVAC mathematics

About

EPA 608 Pro

Prepare for your EPA 608 certification with over 1,000 practice questions and full exam simulators. Detailed explanations help you understand why answers are correct, and study tools like flashcards and missed question review target your weak areas. Study offline anytime, anywhere.

Highlights
  • 1,025 practice questions
  • Full exam simulators for all certification types
  • Detailed answer explanations
  • Flashcards and topic quizzes
  • Diagnostic test for weak spots
  • Offline study capability
  • Progress tracking
Features
Read full description

Getting your EPA 608 card comes down to four sections and one number: 18 out of 25 on each one. EPA 608 Pro gets you there with 1,025 questions, full exam simulators, and explanations that tell you why an answer is right instead of just marking it wrong. EXAM SIMULATORS Core, 25 questions Type I Certification, 50 questions Type II Certification, 50 questions Type III Certification, 50 questions Universal, 100 questions Core is required for every certification, so testing for one Type means sitting 50 questions rather than 25. The simulators match that. Each section is scored on its own, so you find out you are solid on Core and shaky on Type II while there is still time to do something about it. 1,025 QUESTIONS Seven categories and 41 subtopics: ozone science and federal regulations, refrigerants and refrigeration fundamentals, recovery and evacuation, safety and cylinders, and all three appliance Types. Every question comes with an explanation, and most of them name the exact mistake the question was written to catch. The 80 and 90 percent recovery rules, Table 1 evacuation levels, leak rate thresholds, the 200 pound line, 25 mm Hg absolute. These are the details people fail on, and they are covered. STUDY TOOLS Flashcards for every category, one fact per card Practice tests with answers and explanations as you go A diagnostic test that finds your weak spots Missed question review that keeps working what you got wrong Topic quizzes for any of the 41 subtopics Custom quizzes across whichever categories you pick A glossary for the abbreviations and jargon in the questions Progress tracking by category and subtopic WORKS OFFLINE Every question, explanation, and diagram lives on your device. Study in a mechanical room, a basement, the van, or anywhere else with no signal. FOR HVAC techs, apprentices, trade school students, and anyone testing for Core, Type I, Type II, Type III, or Universal certification. EPA 608 Pro is a study aid and is not affiliated with or endorsed by the United States Environmental Protection Agency. https://epa608pro.com/privacy-policy https://epa608pro.com/terms-of-service

Screenshots

HVAC School4 screens
EPA 608 Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: HVAC School at none against EPA 608 Pro's 3. HVAC School also leads on ratings volume (85 vs 1) and iOS requirement (13.4 vs 15.1). EPA 608 Pro's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. EPA 608 Pro sells 3 in-app purchases, starting at $4.99 per 7 days. HVAC School asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

EPA 608 Pro holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: HVAC School has 85 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

HVAC School ships an update every 5 weeks, EPA 608 Pro every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
HVAC School versus EPA 608 Pro: the parameters behind the verdict, then further details
ParameterHVAC SchoolEPA 608 Pro
PriceFreeFree
Rating4.8 (85 ratings)5.0 (1 ratings) — better
Positive reviews82.8% of reviews—
Number of ratings85 — better1
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 — better15.1
Further details — not scored
Size30 MB52 MB
Age rating12+4+
DeveloperKalos Services Inc.Michael Scott Waldron

Customer experience

HVAC School

All ratings85 ratings
Positive95.3%
Neutral3.5%
Negative1.2%
Written reviews29 reviews
Positive82.8%
Neutral13.8%
Negative3.4%

EPA 608 Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HVAC School

No in-app purchases

3 purchases

EPA 608 Pro

Subscriptions3
  • EPA 608 Pro Weekly$4.997 Days
  • EPA 608 Pro Monthly$9.991 Month
  • EPA 608 Pro Quarterly$24.993 Months

Questions

Is HVAC School free?
HVAC School is free to download, with no in-app purchases.
Is EPA 608 Pro free?
EPA 608 Pro is free to download, with in-app purchases available.
Which has better reviews, HVAC School or EPA 608 Pro?
EPA 608 Pro is rated higher. HVAC School averages 4.8 out of 5 from 85 ratings, while EPA 608 Pro averages 5.0 from 1 ratings.
Do HVAC School or EPA 608 Pro have ads?
Neither HVAC School nor EPA 608 Pro shows ads.
Which is updated more often, HVAC School or EPA 608 Pro?
HVAC School ships an update every 5 weeks, and EPA 608 Pro every 2 months. Most recently, HVAC School was updated on November 2, 2026 and EPA 608 Pro on October 31, 2026.

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