All 569 questions free with an account, built from official ESCO study materials — the EPA-approved organization behind the real exam. Pro adds AI Tutor chat, Weak Spot Drill, radar chart, timed exam simulation, and offline access. Everything serious HVAC techs need.
🔒 One-time payment · Lifetime access · No subscription
Free tier has no credit card, no time limit. Pro unlocks everything — once.
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Price increases when next feature ships — no warning, no countdown.
Every feature below is locked in at your $14.99 founding price. When we ship, the price goes up — you pay nothing extra.
Built from official ESCO study materials, reviewed by certified HVAC technicians.
Ask any 608 concept — type or hands-free voice. Plain trade language, instant answers.
Key facts for Core, Type I, II, and III. Flip between jobs on your phone.
Visual readiness map across all 4 sections — see exactly where to drill next.
Listen to concept breakdowns in podcast format — study hands-free on the job.
Set your exam date — we build a day-by-day plan around your weak spots.
Printable sheets per section — pressure tables, recovery limits, legal thresholds.
Practice without internet — job sites, basements, anywhere signal is weak.
AI prediction of your real exam score based on your performance patterns.
🔒 One-time payment · Lifetime access · No subscription
Yes — $14.99 once, access forever. No monthly fees, no renewal, no "annual plan." Pay once and you're done.
We don't announce it in advance. When we ship major features, the founding price closes automatically. There's no countdown — it just changes.
No catch. $14.99 is the founding price — we're building the audience now while the platform is early. As we ship podcast audio, study planners, and offline mode, the price will reflect that. Early supporters lock in at today's price.
Most EPA 608 study books cost $19–$30 — and they don't tell you which topics you're failing. Pro gives you AI-driven drilling on your specific weak spots, plus a question bank from the same source organizations that produce the real exam.
You can try an on-page sample with zero sign-up. A free account unlocks all 569 questions across all 4 sections, the Study Path, instant scoring, answer explanations, and the AI Tutor (10 questions/month). Pro raises the AI Tutor to 1,000 questions/month.
Yes — fully responsive. Practice between jobs on your phone, at home on a tablet, or before the exam on desktop.
One payment. Every tool we build. No subscription, no renewal, no expiry.
Get Pro Access — $14.99 →