--- title: Chilled and Hot Water Systems Contractor (C-21F) Exam Prep url: https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/ updated: 2026-11-10 site: Pass Your Nevada Contractor Exam description: Chilled and Hot Water Systems Contractor (C-21F) exam prep for Nevada: 2 options from $495 to $945, including book package, books allowed in the exam. --- [All licenses](https://passyournevadacontractorexam.com/) /[Plumbing, heating and air (C-1, C-21)](https://passyournevadacontractorexam.com/#mechanical) /Chilled and Hot Water Systems Contractor (C-21F) # Chilled and Hot Water Systems Contractor (C-21F) exam prep The Nevada Chilled and Hot Water Systems Contractor (C-21F) license is an NSCB Class C specialty subclassification for plumbing, heating, air conditioning or gas work. It takes four years of experience, the Business and Law (CMS) exam, the C-21F trade exam, a bond and a monetary limit. Here are 2 packages, from $495 to $945, each with one-click checkout. See the packages PackagesCompareHow the exam worksFAQSources Quick facts Price range $495 to $945 Options 2 Licensed by NSCB, exams by PSI Book rule CMS open book; trade exam with listed codes See the packages Not sure which one? Call [(877) 775-9400](tel:+18777759400) ## Key takeaways - 2 options for the Chilled and Hot Water Systems Contractor (C-21F) exam, from $495 to $945. - Every Nevada contractor license needs the Business and Law (CMS) exam plus a trade exam for the classification, both given by PSI. - The CMS is open book with the Construction Business and Law Manual for Nevada; trade exams are closed book except for the code references their outline allows. - Buy now goes straight to secure checkout; books ship from 1 Exam Prep and online courses arrive by email. Updated November 10, 2026 · prices checked against the 1 Exam Prep store ## 2 Chilled and Hot Water Systems Contractor (C-21F) packages Buy now adds the item to your cart and opens secure checkout at 1 Exam Prep. Details shows the full description first. Book Package [Nevada Chilled and Hot Water Systems Contractor (C-21F) Exam Book Package](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/book-package/) The reference books, new and unmarked. $945 (was $1,045) Save 10% [Buy now](https://1examprep.com/cart/45740514508857:1?attributes%5BSite%5D=passyournevadacontractorexam.com&ref=passyournevadacontractorexam.com) · [Details](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/book-package/) Books Allowed in the Exam [Nevada Chilled and Hot Water Systems Contractor (C-21F) Books Allowed into Exam Package](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/exam-room-books/) The references PSI allows in the exam room. $495 (was $595) Save 17% [Buy now](https://1examprep.com/cart/45815324704825:1?attributes%5BSite%5D=passyournevadacontractorexam.com&ref=passyournevadacontractorexam.com) · [Details](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/exam-room-books/) ## How do the Chilled and Hot Water Systems Contractor (C-21F) options compare? Prices are the starting price for each option; some offer add-ons at checkout. Option | What you get | Price [Book Package](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/book-package/) | the reference books, new and unmarked | $945 [Books Allowed in the Exam](https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/exam-room-books/) | the references PSI allows in the exam room | $495 ## How does the Chilled and Hot Water Systems Contractor (C-21F) exam work? The Chilled and Hot Water Systems Contractor (C-21F) license comes from the Nevada State Contractors Board. You apply to the NSCB with your experience and financial statement, the Board sends an exam eligibility letter, and you book the CMS and the trade exam with PSI. Scores come right after the exam. - Every Nevada contractor license needs the Business and Law (CMS) exam plus a trade exam for the classification, both given by PSI. - The CMS is open book with the Construction Business and Law Manual for Nevada; trade exams are closed book except for the code references their outline allows. - PSI charges $95 for one exam portion, or $140 for a trade exam taken with the CMS, and you get three attempts before the application is void. - The Board sets a bond from $1,000 to $500,000 and a monetary limit on every license, based on your experience and financial statements. ### Which Chilled and Hot Water Systems Contractor (C-21F) option should I choose? The Books Allowed in the Exam at $495 is the lightest way into the Chilled and Hot Water Systems Contractor (C-21F) exam: the references PSI allows in the exam room. The Book Package at $945 is the most complete option: the reference books, new and unmarked. Candidates who fail usually run out of time rather than knowledge, so pick the option that gets you fastest through the references, and call (877) 775-9400 if you are unsure. ## Chilled and Hot Water Systems Contractor (C-21F) exam questions ### How much does Chilled and Hot Water Systems Contractor (C-21F) exam prep cost? Chilled and Hot Water Systems Contractor (C-21F) exam prep runs from $495 to $945 across 2 options: Book Package $945; Books Allowed in the Exam $495. ### Is the Chilled and Hot Water Systems Contractor (C-21F) exam open book? Partly. The Business and Law (CMS) exam is open book with the Construction Business and Law Manual for Nevada. Trade exams are closed book except for the code references named in the PSI content outline for your classification, which is why the exam-room book packages are sold as allowed in the exam. ### Who issues the Chilled and Hot Water Systems Contractor (C-21F) license or card in Nevada? It comes from the Nevada State Contractors Board (NSCB), with exams by PSI. Buying a package here does not register you or make you eligible; the board approves you first, and the exam vendor schedules the test. ### What does the Chilled and Hot Water Systems Contractor (C-21F) exam cost? PSI charges $95 for one exam portion and $140 when the trade exam is taken with the Business and Law (CMS) exam. The NSCB application fee of $300 is separate. ### What is the monetary limit on a Nevada license? Every Nevada contractor license carries a monetary limit, the most you can contract for on one job. The Board sets it, along with a bond of $1,000 to $500,000, from your financial statement and experience. ### Are these the real exam questions? No. Licensing exam questions are confidential. The courses and practice exams are original material written to the same subjects and format, with explanations that point to the reference section. ### How do the books and courses arrive? Printed and rental books ship from our fulfillment center, 1 Exam Prep. Online courses and practice exams arrive by email after purchase, so you can start the same day. Call (877) 775-9400 with any question first. ## Related pages ### More in Plumbing, heating and air (C-1, C-21) - [Plumbing and Heating Contractor (C-1)](https://passyournevadacontractorexam.com/c-1-plumbing-and-heating/) - [Plumbing Contractor (C-1D)](https://passyournevadacontractorexam.com/c-1d-plumbing/) - [Heating, Cooling and Circulating Air Contractor (C-1F)](https://passyournevadacontractorexam.com/c-1f-heating-cooling-and-circulating-air/) - [Pipes and Vents for Gas Contractor (C-1G)](https://passyournevadacontractorexam.com/c-1g-pipes-and-vents-for-gas/) - [Water Heater Contractor (C-1H)](https://passyournevadacontractorexam.com/c-1h-water-heater/) - [Pipe and Duct Insulation Contractor (C-1C)](https://passyournevadacontractorexam.com/c-1c-pipe-and-duct-insulation/) - [Sheet Metal Contractor (C-1E)](https://passyournevadacontractorexam.com/c-1e-sheet-metal/) - [Chilled-Water Piping Contractor (C-1I)](https://passyournevadacontractorexam.com/c-1i-chilled-water-piping/) ### Other license groups - [Class B general building contractors](https://passyournevadacontractorexam.com/#building) - [Electrician ID cards](https://passyournevadacontractorexam.com/#electricians) - [C-2 electrical contractors](https://passyournevadacontractorexam.com/#electrical) - [Carpentry, drywall, paint and plaster](https://passyournevadacontractorexam.com/#finish) - [Concrete, masonry, roofing and steel](https://passyournevadacontractorexam.com/#structure) - [Solar, signs and other specialty](https://passyournevadacontractorexam.com/#specialty) - [Class A general engineering contractors](https://passyournevadacontractorexam.com/#engineering) - [Business and Law (CMS) and licensing help](https://passyournevadacontractorexam.com/#business) - [Journeyman plumber cards](https://passyournevadacontractorexam.com/#plumbing) - [Code books, courses and national exams](https://passyournevadacontractorexam.com/#codes) ### Also on this site - [Nevada exam FAQ](https://passyournevadacontractorexam.com/faq/) - [Study tips and licensing news](https://passyournevadacontractorexam.com/blog/) - [Which board tests what](https://passyournevadacontractorexam.com/#classes) ## Sources - [NSCB: license examinations](https://www.nvcontractorsboard.com/licensing/license-examinations/) - [PSI: Nevada contractor management (CMS) bulletin](https://test-takers.psiexams.com/api/content/bulletin/304) - [NSCB: license bonds](https://nvcontractorsboard.com/bonds) - [NSCB: new license application](https://www.nvcontractorsboard.com/wp-content/uploads/2026/08/New-License-Application.pdf) Licensing facts checked against these pages; last updated November 10, 2026. Rules change, so confirm with the board before you apply. --- Source: https://passyournevadacontractorexam.com/c-21f-chilled-and-hot-water-systems/ Publisher: Pass Your Nevada Contractor Exam. Orders are fulfilled by 1 Exam Prep (https://1examprep.com). Phone (877) 775-9400, email sales@1examprep.com. Prices change; the product page and checkout show the current price.