Please select the Washington D.C. license/exam that you are interested in purchasing reference books for.
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Modern Refrigeration and Air Conditioning, 22nd Edition
$236.99View ProductThe Modern Refrigeration and Air Conditioning, 22nd Edition is the HVACR standard for a new generation of learners. It correlates to HVAC Excellence and PAHRA accreditation requirements to ensure complete coverage that prepares students for career success.
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NFPA 70 National Electrical Code (NEC) – 2020 Edition
$208.99View ProductThe code you—and the world—depend on to keep pace with ever-evolving electrical hazards and challenges.
NFPA 70®, National Electrical Code® (NEC®), is the authoritative document addressing electrical installations in residential, commercial, and industrial settings. The NEC is revised every three years to stay in sync with industry practices, emerging trends, and the development and introduction of technologies to provide comprehensive rules for designers, installers, inspectors, engineers, electricians, and anyone else who works in the electrical industry. The code is organized for ease of use.
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Ugly’s Electrical References, 2026 Edition
$32.99View ProductUgly’s Electrical References, 2026 Edition is the essential on-the-job reference tool for electrical industry professionals.
The 2026 Edition provides the most pertinent, up-to-date information used by electricians, including updated NEC code and table change information; mathematical formulas; NEMA wiring configurations; conduit bending guide; ampacity and conduit fill information; transformer and control circuit wiring diagrams; and conversion tables.
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2012 International Fuel Gas Code (International Code Council Series) 1st Edition
$89.99View Product- The 2012 International Fuel Gas Code (IFGC), provides minimum regulations for the safe installation of fuel gas systems and gas-fired appliances in residential, commercial, and industrial buildings. Promotes gas system safety and performance through consistent, enforceable standards. It applies to both natural gas and liquefied petroleum (LP) gas systems in residential, commercial, and industrial settings.
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2012 International Plumbing Code
$98.99View ProductProvides minimum regulations for plumbing facilities in terms of both performance and prescriptive objectives, and provides for the acceptance of new and innovative products, materials, and systems.
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2011 National Electrical Code
$208.99View ProductNFPA 70®, National Electrical Code® (NEC®), is the authoritative document addressing electrical installations in residential, commercial, and industrial settings. The NEC is revised every three years to stay in sync with industry practices, emerging trends, and the development and introduction of technologies to provide comprehensive rules for designers, installers, inspectors, engineers, electricians, and anyone else who works in the electrical industry. The code is organized for ease of use.
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2011 National Electrical Code Tabs
$34.99View ProductPERMANENT TABS PACKAGE – This package includes permanent tabs for some references allowed to be used during the exam.
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2012 International Fuel Gas Code Tabs
$14.99View ProductPre-Printed Permanent Tabs – During your exam, time is of the essence. By having your pages tabbed, you can greatly increase your speed in referencing key exam topics.
These tabs are pre-printed and permanent.
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2012 International Plumbing Code Tabs
$14.99View ProductPERMANENT TABS PACKAGE – Includes tabs for all books allowed to be taken into the exam.
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Washington D.C. Air Conditioning and Refrigeration Mechanical Unlimited Tab Pack
$21.99View ProductPERMANENT TABS PACKAGE – This package includes permanent tabs for some of the references allowed to be used during the exam.
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Washington D.C. Air Conditioning and Refrigeration Mechanical Unlimited Online Exam Prep Complete Package
$654.96View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington D.C. Journeyman/Master Electrician Online Exam Prep Complete Package
$573.96View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington Electrical Online Exam Prep Complete Package
$540.97View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington D.C. Journeyman/Master Plumber Online Exam Prep Complete Package
$410.97View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington D.C. Master Refrigeration and Air Conditioning Mechanical Limited Online Exam Prep Complete Package
$654.96View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington D.C. Journeyman/Master Plumber with Gas Online Exam Prep Complete Package
$514.96View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.
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Washington D.C. Journeyman/Master Plumber with Gas Tab Pack
$28.99View ProductThe Washington D.C. Journeyman/Master Plumber with Gas Tab Pack includes the following:
- 2012 International Plumbing Code Tabs
- 2012 International Fuel Gas Code Tabs
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Washington D.C. Journeyman/Master Gas Pipe Fitter Online Exam Prep Complete Package
$401.97View ProductOur complete package includes all references used to study for the exam, pre-printed tabs for only those references allowed to be brought into the exam center, and 365 days access to our online exam prep course. The highlighting guides and quizzes are designed to familiarize students with testing materials. We do not provide students with exact test questions, as the state does not release this information. @HomePrep is a National Leader in online education. With over 100,000 satisfied students and a course catalog of over 1,000 classes, we are here to help you – Invest in Yourself.

