CSLB Law & Business + CSLB C-20 HVAC bundle

CSLB Law & Business — Complete Study Guide (2026)

Since January 1, 2025 the California license-free job limit is $1,000, not $500 (B&P §7048, AB 2622). This book is written to the rest of current law the same way: the $25,000 bond, the 2026 fee table, the July 2026 penalty ranges, and CSLB's January 1, 2027 deadline to verify workers'-comp exemptions. All 7 exam sections, plus a 115-question practice exam timed to CSLB's published 3½ hours, with answers at the back. PDF + EPUB.

CSLB C-20 HVAC Trade Exam Study Guide (2026)

This guide follows the four content areas CSLB publishes for the C-20 HVAC trade exam, in CSLB’s order and at its approximate weights (22 / 38 / 20 / 20 percent): load and duct design and estimating; fabrication, installation and startup; troubleshooting, repair and maintenance; and safety. Chapters cover Manual J and S, psychrometrics, duct sizing, refrigeration and superheat, electrical controls, refrigerant rules and the contractor law. Figures that change with each code cycle are flagged rather than stated as permanent. 284 pages, 200 original practice questions, and an answer key. PDF + EPUB.

CSLB Law & Business — Cheat Sheet (2026)

A printable colour cheat sheet for the CSLB Law & Business exam, laid out for US Letter and meant to be printed double-sided. It pulls the exam's format, scoring and content areas, and the figures and rules it turns on, onto dense colour-coded pages. Each figure was checked against the source it cites, and the check date is printed on the sheet (October 2026). An independent study aid, not affiliated with or endorsed by the body that sets the exam. The rules an exam tests can change: confirm against the owner's current documents before you rely on a figure.

CSLB C-20 HVAC — Cheat Sheet (2026)

A printable colour cheat sheet for the CSLB C-20 HVAC exam, laid out for US Letter and meant to be printed double-sided. It pulls the exam's format, scoring and content areas, and the figures and rules it turns on, onto dense colour-coded pages. Each figure was checked against the source it cites, and the check date is printed on the sheet (October 2026). An independent study aid, not affiliated with or endorsed by the body that sets the exam. The rules an exam tests can change: confirm against the owner's current documents before you rely on a figure.