CA C-20 — HVAC (Warm-Air Heating, Ventilating & A/C) Exam
CA · CSLB Exam
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What's covered
- Planning and Estimating 22%
- Fabrication, Installation, and Startup 38%
- Troubleshooting, Repair, and Maintenance 20%
- Safety 20%
See how you learn
Planning and Estimating
Common Questions
Is this updated for 2026?
Yes. All questions, code references, and study materials are strictly updated to the latest 2026 CSLB standards.
How long do I get access?
Enough time to take your exam 49 times — though most of our users pass on their first try! You get a full year of access for individual pass kits, or lifetime access if you grab the All Licenses bundle.
Do I need a textbook too?
Nope — we read the dense code books so you don't have to. Just grab your phone and an internet connection. That is everything you need.
How exactly do I access the course after I buy?
Instant access. As soon as you check out, you'll be dropped straight into our guided exam platform. Log in from anywhere, on any device, and pick up right where you left off.
Free Cheat Sheets
Need a quick sample before you test? Check out our of Exam Cheat Sheets - packed with fast code reference guides, rules of thumb, and everything you need for a quick review.