Please select the Delaware 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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ACCA Ductulator – Duct Calculation Slide Rule
$65.99View ProductOne of our most popular catalog items! This durable two-sided plastic sizing wheel comes with a complete instruction manual for residential and commercial duct-sizing procedures. Designed by Hank Rutkowski.
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Manual J Residential Load Calculation (8th Edition Version 2.50)
$174.99View ProductManual J 8th Edition Version 2.50 is the national ANSI-recognized standard for producing HVAC equipment sizing loads for single-family detached homes, small multi-unit structures, condominiums, town houses, and manufactured homes. A proper load calculation, performed in accordance with the Manual J 8th Edition procedure, is required by national building codes and most state and local jurisdictions.
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2018 International Mechanical Code (International Code Council Series) 1st Edition
$142.99View ProductThe 2018 International Mechanical Code (International Code Council Series) 1st Edition establishes minimum regulations for mechanical systems using prescriptive and performance-related provisions. The IMC was developed with broad-based principles that make possible the use of new materials, methods and design.
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2018 International Fuel Gas Code (International Code Council Series) 1st Edition
$131.99View ProductThe 2018 International Fuel Gas Code (IFGC), developed by the International Code Council (ICC), establishes minimum regulations for the design, installation, maintenance, and inspection of fuel gas systems. It applies to both residential and commercial buildings and aims to ensure safe and efficient use of natural gas and propane.
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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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2018 International Plumbing Code
$131.99View ProductThe 2018 International Plumbing Code provides 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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American Electricians Handbook 17th Edition
$131.99View ProductFor over a century, this practical handbook has served as the definitive industry reference for information on designing, installing, operating, and maintaining electrical systems and equipment. This seventeenth edition has been thoroughly revised to comply with the most recent (2020) National Electrical Code and National Electrical Safety Code.
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Redi-Tag Permanent Tabs – 375 Blank Tabs
$44.99View ProductRedi-Tag permanent tabs are self-sticking and you can print on your laser printer in minutes or write directly on them. Made of heavy duty, durable plastic that won’t tear of curl. Input and format text using Windows® versions of Microsoft® Word and WordPerfect®. Actual size of tab 1-1/8″ x 1-1/4″. 100 tabs per pack.
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Low Pressure Boilers, 5th Edition
$146.99View ProductThe Low Pressure Boilers, 5th Edition provides a comprehensive overview of the latest information on the safe and efficient operation of low pressure steam and hot water boilers, cooling systems, and related equipment. Each chapter is divided into sections to aid comprehension of key concepts. To assist with preparing for a licensing exam, a separate chapter with test-taking tips and a sample exam is included.
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2020 National Electrical Code Pre-Printed Tabs
$34.99View 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.
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Plumbing Basics for Contractors 4th Ed
$274.99View ProductThe Plumbing Basics for Contractors, 4th Edition is a comprehensive guide designed to equip plumbing professionals with essential knowledge for both residential and commercial projects. Published by Pearson, this edition spans 735 pages and emphasizes practical skills, safety protocols, and code compliance. Also, it is especially useful for contractors preparing for licensing exams or seeking a refresher on best practices. If you’d like, I can help break down a specific chapter or topic from the book.
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Advanced Mechanical Study Guide 2nd Edition
$208.99View ProductThe Advanced Mechanical Study Guide 2nd Edition is designed for professionals and students seeking to deepen their understanding of mechanical systems and prepare for advanced examinations, certification or license renewal. The second edition updates foundational mechanical engineering topics — such as statics and dynamics, forces and motion, mechanical advantage and simple machines — and extends into more applied areas including mechanical drawing/drafting, fluid mechanics, thermodynamics, machinery components, and problem‑solving in real‑world mechanical scenarios.
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Delaware Electrical Online Exam Prep Tab Pack
$30.99View ProductPERMANENT TABS PACKAGE – This package includes permanent tabs for some of the references allowed to be used during the exam.
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Delaware Electrical Online Exam Prep Complete Package
$701.95View ProductDelaware Electrical Online Exam Prep Complete Package includes all references used during the exam, pre-printed tabs for all references allowed into the exam 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.
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Delaware Master HVACR Contractor Online Exam Prep Complete Package
$1,463.91View ProductDelaware Master HVACR Contractor Exam Prep 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.
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Delaware HVAC Contractor – IMC and IFGC Exam Prep Tab Pack
$57.99View ProductPERMANENT TABS PACKAGE – This package includes permanent tabs for the references allowed to be used during the exam.
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Delaware Plumbing Contractor Online Exam Prep Complete Package
$853.95View ProductDelaware Plumbing Contractor Online Exam Prep Complete Package includes all references used during the exam, pre-printed tabs for all references allowed into the exam 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.
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Delaware Plumbing Contractor Tab Pack
$17.99View ProductPERMANENT TABS PACKAGE – This package includes permanent tabs for some of the references allowed to be used during the exam.
