ix G-W Integrated Learning Solution Together, We Build Careers At Goodheart-Willcox, we take our mission seriously. Since 1921, G-W has been serving the career and technical education (CTE) community. Our employee-owners are driven to deliver exceptional learning solutions to CTE students to help prepare them for careers. Our authors and subject matter experts have years of experience in the classroom and industry. We combine their wisdom with our expertise to create content and tools to help students achieve success. Our products start with theory and applied content based on a strong foundation of accepted standards and curriculum. To that base, we add student-focused learning features and tools designed to help students make connections between knowledge and skills. G-W recognizes the crucial role instructors play in preparing students for careers. We support educators’ efforts by providing time-saving tools that help them plan, present, assess, and engage students with traditional and digital activities and assets. We provide an entire program of learning in a variety of print, digital, and online formats, including economic bundles, allowing educators to select the perfect mix for their classroom. Student-Focused Curated Content Goodheart-Willcox believes that student-focused content should be built from standards and accepted curriculum coverage. Standards from HVAC Excellence and PAHRA/AHRI were used as a foundation for this text. Modern Refrigeration and Air Conditioning also uses a building block approach with attention devoted to a logical teaching progression that helps students build on their learning. We call on industry experts and instructors from across the country to review and comment on our content, presentation, and pedagogy. Finally, in our refi nement of curated content, our editors are immersed in content checking, securing and sometimes creating fi gures that convey key information, and revising language and pedagogy. Curriculum Correlations Modern Refrigeration and Air Conditioning aligns with curriculum standards for HVAC Excellence and PAHRA accreditation. HVAC Excellence is a not-for-profi t organiza- tion that serves the HVACR industry with the goal of supporting and improving HVACR education and training. HVAC Excellence provides many services to HVACR education and training, including award- ing program accreditation, professional certifi ca- tions, and instructor credentials. The Partnership for Air-Conditioning, Heating, and Refrigeration Accreditation (PAHRA) is an inde- pendent, third-party organization that is a partner- ship between HVACR educators and the HVACR industry. PAHRA awards accreditation to programs that meet or exceed industry-validated standards developed by AHRI. To see how Modern Refrigeration and Air Conditioning correlates to HVAC Excellence and AHRI standards, please visit www.g-w.com/modern- refrigeration-air-conditioning-2017 and click on the Correlations tab. For more information on PAHRA and HVAC Excellence, please visit www.pahrahvacr.org and www.hvacexcellence.org.