{"product_id":"delaware-master-hvacr-restricted-heating-hydronic-systems-gas-piping-contractor-ultimate-exam-prep-rental-package-1","title":"Delaware Master HVACR Restricted Heating Hydronic Systems \u0026 Gas Piping Contractor Ultimate Exam Prep Rental Package","description":"\u003ch1 style=\"color: #d32f2f;\"\u003eDelaware Master HVACR Restricted Heating Hydronic Systems \u0026amp; Gas Piping Contractor Ultimate Exam Prep Rental Package\u003c\/h1\u003e\n\n\u003cp\u003ePrepare for the Delaware Master HVACR Restricted Heating – Hydronic Systems and Gas Piping Contractor examination with a comprehensive rental package that combines organized reference books, extended online course access, and licensing application support. This Ultimate Exam Prep Rental Package is designed for experienced HVACR professionals who want a structured way to review hydronic heating systems, boilers, pumps, valves, controls, fuel gas piping, mechanical requirements, system maintenance, testing, and inspection.\u003c\/p\u003e\n\n\u003cp\u003eThe Delaware restricted hydronic systems examination requires candidates to understand how heating systems use water or steam to distribute heat. Candidates must also be prepared to apply knowledge involving boilers, piping arrangements, pumps, valves, fuel gas, oil, water, system controls, and safe installation and service practices.\u003c\/p\u003e\n\n\u003cp\u003eThis package includes rental copies of the \u003cem\u003eInternational Fuel Gas Code, 2018\u003c\/em\u003e, the \u003cem\u003eInternational Mechanical Code, 2018\u003c\/em\u003e, \u003cem\u003eLow Pressure Boilers, 5th Edition\u003c\/em\u003e, and \u003cem\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/em\u003e. All included books are highlighted and tabbed to support focused study and more efficient reference navigation.\u003c\/p\u003e\n\n\u003cp\u003eThe highlighted sections direct attention to useful definitions, requirements, technical explanations, tables, diagrams, and system concepts. Permanent tabs help candidates move between major subjects while studying. Regular use of the prepared books can help build familiarity with their organization before the open-book examination.\u003c\/p\u003e\n\n\u003cp\u003eThe package also includes 1 year of course access. The extended course period gives students time to review the material in manageable sections, practice using the books, revisit difficult subjects, and prepare according to their work schedule and anticipated examination date.\u003c\/p\u003e\n\n\u003cp\u003eApplication Service is included with the Ultimate package. This service provides organized support for the Delaware professional licensing application process. It helps candidates understand the application sequence and organize information associated with their submission. Final eligibility, authorization to test, and license issuance are determined by the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePlease allow up to 15 business days for ultimate book package orders.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"border: 3px solid #d32f2f; padding: 20px; margin: 25px 0; background-color: #fff7f7;\"\u003e\n  \u003ch2 style=\"color: #d32f2f; margin-top: 0;\"\u003eWhat You Get\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncluded Book:\u003c\/strong\u003e International Fuel Gas Code, 2018\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncluded Book:\u003c\/strong\u003e International Mechanical Code, 2018\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncluded Book:\u003c\/strong\u003e Low Pressure Boilers, 5th Edition\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIncluded Book:\u003c\/strong\u003e Modern Refrigeration and Air Conditioning, 22nd Edition\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHighlighted and Tabbed Books:\u003c\/strong\u003e All included rental books are prepared to support organized study and efficient reference navigation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCourse Access:\u003c\/strong\u003e 1 year of course access.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication Service:\u003c\/strong\u003e Included with this package.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePackage Price:\u003c\/strong\u003e $1,465\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRefundable Deposit:\u003c\/strong\u003e $450\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTotal Due Today:\u003c\/strong\u003e $1,915\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003eRefundable Deposit Policy:\u003c\/strong\u003e The $450 deposit is fully refundable when the books are returned in similar condition within the rental period.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Details\u003c\/h2\u003e\n\n\u003cp\u003eThe Delaware Master HVACR Restricted Heating – Hydronic Systems and Gas Piping examination evaluates knowledge associated with the design, installation, construction, maintenance, service, repair, alteration, and modification of hydronic systems and gas piping serving those systems.\u003c\/p\u003e\n\n\u003cp\u003eA hydronic heating system uses water, steam, or another liquid to transfer heat. Candidates should understand the equipment and piping used to generate, distribute, control, and deliver that heat throughout a building or system.\u003c\/p\u003e\n\n\u003cp\u003eThe published examination outline identifies 80 questions with a three-hour time allowance. The tested subject areas include:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eGeneral Knowledge: 22 questions\u003c\/li\u003e\n  \u003cli\u003eHydronic Systems: 10 questions\u003c\/li\u003e\n  \u003cli\u003ePiping, Pumps, and Valves: 10 questions\u003c\/li\u003e\n  \u003cli\u003eFuel Gas and Oil: 12 questions\u003c\/li\u003e\n  \u003cli\u003eBoilers – Low and High Pressure: 14 questions\u003c\/li\u003e\n  \u003cli\u003eWater: 8 questions\u003c\/li\u003e\n  \u003cli\u003eTesting and Inspection: 4 questions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eGeneral knowledge is the largest category on the published outline. Candidates should review heating principles, heat transfer, pressure, temperature, combustion, system components, tools, controls, terminology, materials, and accepted HVACR practices.\u003c\/p\u003e\n\n\u003cp\u003eHydronic-system preparation should include system arrangements, water circulation, heat distribution, expansion, air removal, temperature control, zoning, radiation equipment, and common operating principles. Candidates should understand how boilers, pumps, valves, piping, controls, and heat emitters work together.\u003c\/p\u003e\n\n\u003cp\u003ePiping, pump, and valve questions may address piping materials, joining methods, system layouts, circulation, pump operation, valve functions, flow control, check valves, balancing, isolation, and maintenance considerations. Candidates may need to recognize the purpose of a component or determine how its position affects system operation.\u003c\/p\u003e\n\n\u003cp\u003eFuel gas and oil questions may involve piping materials, valves, regulators, appliance connections, combustion air, venting, burners, fuel supply, and system safety. Candidates should practice locating technical information in the fuel gas and mechanical codes while also understanding the operating principles involved.\u003c\/p\u003e\n\n\u003cp\u003eBoiler questions can address low-pressure and high-pressure equipment, boiler construction, burners, controls, safety devices, operating procedures, inspections, maintenance, and troubleshooting. The \u003cem\u003eLow Pressure Boilers, 5th Edition\u003c\/em\u003e provides focused technical material for many of these subjects.\u003c\/p\u003e\n\n\u003cp\u003eWater questions may involve water treatment, makeup water, system pressure, circulation, expansion, air elimination, temperature, and conditions that can affect boiler or hydronic-system performance. Testing and inspection questions may address procedures used to evaluate piping, equipment, safety devices, and system operation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eOpen Book Test\u003c\/h2\u003e\n\n\u003cp\u003eThe Delaware Master HVACR Restricted Heating – Hydronic Systems and Gas Piping examination is an open-book, timed test. Candidates may use authorized references during the examination while following the testing provider’s current rules for approved books, editions, highlighting, tabs, notes, inserts, calculators, and other materials.\u003c\/p\u003e\n\n\u003cp\u003eAn open-book format does not remove the need for technical preparation. Candidates have three hours to complete 80 questions. Efficient navigation is important because some questions may require a code search, table interpretation, equipment analysis, or technical calculation.\u003c\/p\u003e\n\n\u003cp\u003eThe included rental books are highlighted and tabbed to support preparation. Tabs provide starting points for important subjects, while highlighting directs attention to useful rules, definitions, tables, diagrams, and technical explanations. Candidates should still read the complete surrounding material because notes, exceptions, definitions, and table conditions may affect the correct answer.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cem\u003eInternational Fuel Gas Code, 2018\u003c\/em\u003e supports preparation involving gas piping materials, system sizing, valves, regulators, appliance connections, combustion air, venting, testing, and installation requirements.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cem\u003eInternational Mechanical Code, 2018\u003c\/em\u003e supports mechanical-system questions involving equipment installation, boiler-related provisions, ventilation, combustion air, exhaust, appliance requirements, and related mechanical topics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eLow Pressure Boilers, 5th Edition\u003c\/em\u003e supports focused preparation involving boiler construction, fittings, controls, safety devices, operation, maintenance, combustion, water treatment, inspections, and troubleshooting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/em\u003e provides broader study support for HVACR theory, heating systems, controls, combustion, equipment operation, service procedures, and troubleshooting. Candidates should compare all books with the current examination bulletin before test day and bring only references authorized for examination-room use.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eLicensing Steps\u003c\/h2\u003e\n\n\u003cp\u003eThe Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners regulates Master HVACR and Master HVACR Restricted licenses. Applicants pursuing the Heating – Hydronic Systems and Gas Piping specialty must complete the state licensing process and receive approval before sitting for the master examination.\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelect the correct classification.\u003c\/strong\u003e Apply for a Delaware Master HVACR Restricted license and select Heating – Hydronic Systems and Gas Piping as the specialty.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCreate or access a DELPROS account.\u003c\/strong\u003e Delaware professional license applications are submitted through the Delaware Professional Regulation Online Services system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete the application.\u003c\/strong\u003e Provide the requested personal, apprenticeship, employment, experience, examination, and licensing information.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGather supporting documents.\u003c\/strong\u003e Required materials may include apprenticeship records, a journeyperson certificate, employment verification, supervised experience documentation, and verification of licenses held in other jurisdictions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubmit records as directed.\u003c\/strong\u003e Certain documents may need to be completed or submitted by an employer, supervisor, apprenticeship program, school, or licensing authority.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete any applicable equivalency requirement.\u003c\/strong\u003e Applicants without a qualifying apprenticeship credential may need to satisfy the apprenticeship equivalency or bypass requirement associated with the requested specialty.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReceive Board approval to test.\u003c\/strong\u003e The Board reviews the completed application and supporting documentation before authorizing the candidate to take the master examination.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRegister for the examination.\u003c\/strong\u003e Follow the testing provider’s registration and scheduling instructions after receiving approval.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTake the examination.\u003c\/strong\u003e Follow all current requirements involving identification, authorized references, calculators, appointment procedures, and testing conduct.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete outstanding licensing requirements.\u003c\/strong\u003e The Board must receive the required examination result and supporting records before issuing the professional license.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003eThe included Application Service helps candidates organize the licensing process and understand the information associated with the application. Candidates remain responsible for meeting experience requirements, providing accurate records, paying government and testing fees, and completing required examinations.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eState Requirements\u003c\/h2\u003e\n\n\u003cp\u003eDelaware offers an unrestricted Master HVACR license and several Master HVACR Restricted specialties. Heating – Hydronic Systems and Gas Piping is one of the recognized restricted classifications. The license holder may provide services within the specialty identified on the license.\u003c\/p\u003e\n\n\u003cp\u003eA restricted license does not automatically authorize every type of HVACR work covered by an unrestricted Master HVACR license. Professionals who plan to provide services in more than one restricted specialty must pursue the license classification appropriate for their complete scope of work.\u003c\/p\u003e\n\n\u003cp\u003eThe qualification pathway depends on the applicant’s apprenticeship training, journeyperson credential, supervised experience, and other documentation reviewed by the Board.\u003c\/p\u003e\n\n\u003cp\u003eAn applicant with a qualifying journeyperson certificate earned through an accepted HVACR or restricted HVACR apprenticeship may be required to document applicable post-apprenticeship experience under qualified supervision.\u003c\/p\u003e\n\n\u003cp\u003eAn applicant without the qualifying apprenticeship credential may be required to document a longer period of supervised HVACR or restricted HVACR experience and complete the applicable apprenticeship equivalency or bypass examination.\u003c\/p\u003e\n\n\u003cp\u003eExperience records should demonstrate work relevant to hydronic heating systems and gas piping. This may include boilers, circulation systems, piping, pumps, valves, controls, fuel systems, service, maintenance, testing, or related HVACR work within the requested specialty.\u003c\/p\u003e\n\n\u003cp\u003eThe Delaware Board determines whether the applicant’s training, experience, examination results, and supporting documents meet state requirements. Purchasing this package does not replace any licensing requirement or guarantee Board approval.\u003c\/p\u003e\n\n\u003cp\u003eA Delaware professional license is separate from a Delaware business license. Contractors planning to operate a business may also need business registration, tax accounts, insurance, permits, and local approvals. These requirements are separate from the professional examination and license.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eReference Books\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIncluded Book: International Fuel Gas Code, 2018\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan\u003eThis code reference addresses fuel gas piping materials, system sizing, valves, regulators, appliance connections, combustion air, venting, testing, and installation requirements associated with fuel-burning equipment.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIncluded Book: International Mechanical Code, 2018\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan\u003eThis mechanical code reference covers equipment installation, boiler-related requirements, mechanical appliances, ventilation, combustion air, exhaust, and other provisions relevant to heating systems.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIncluded Book: Low Pressure Boilers, 5th Edition\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan\u003eThis technical reference supports study of boiler construction, fittings, controls, burners, combustion, safety devices, operation, maintenance, water treatment, inspections, and troubleshooting.\u003c\/span\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eIncluded Book: Modern Refrigeration and Air Conditioning, 22nd Edition\u003c\/strong\u003e\u003cbr\u003e\n    \u003cspan\u003eThis comprehensive HVACR reference provides additional study support involving heating principles, hydronic systems, combustion, equipment, controls, system operation, maintenance, and service procedures.\u003c\/span\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAll included rental books are highlighted and tabbed. Use the prepared materials throughout the full course period so their organization becomes familiar. Regular navigation practice can help candidates locate definitions, chapters, tables, technical diagrams, control information, and system principles more efficiently.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eTest Information and Study Materials\u003c\/h2\u003e\n\n\u003cp\u003eCreate a study schedule based on the examination categories. Assign separate review periods to general knowledge, hydronic systems, piping, pumps, valves, fuel gas, oil, boilers, water, testing, and inspection.\u003c\/p\u003e\n\n\u003cp\u003eGive additional attention to general knowledge and boilers because these areas represent a significant portion of the published outline. Review both technical concepts and the practical application of those concepts to equipment and system operation.\u003c\/p\u003e\n\n\u003cp\u003eFor hydronic systems, study circulation, expansion, air removal, pressure, temperature, zoning, heat distribution, and common system arrangements. Practice tracing the path of water or steam through the system and identifying the purpose of each component.\u003c\/p\u003e\n\n\u003cp\u003eFor pumps and valves, review circulation principles, pump placement, flow direction, isolation, balancing, pressure control, and common valve functions. Understanding how the parts interact can make troubleshooting questions easier to evaluate.\u003c\/p\u003e\n\n\u003cp\u003eFor fuel gas questions, practice locating information in the code through the index and chapter headings. Confirm system conditions before selecting a piping table or installation requirement.\u003c\/p\u003e\n\n\u003cp\u003eFor boiler preparation, review operating controls, safety controls, burners, low-water conditions, pressure, temperature, inspections, maintenance, combustion, and water treatment. Connect each component with the condition it monitors or controls.\u003c\/p\u003e\n\n\u003cp\u003eComplete timed practice sessions as the examination date approaches. Answer familiar questions first, mark longer searches or technical problems, and return to them later. Review incorrect answers by locating the supporting information in the appropriate reference.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow 1 Exam Prep Helps You Reach Your Goal\u003c\/h2\u003e\n\n\u003cp\u003e1 Exam Prep provides an organized preparation path for trade professionals pursuing contractor licenses. The course connects the Delaware examination subjects with hydronic-system review, boiler knowledge, fuel gas requirements, mechanical concepts, reference navigation, and practice-oriented study.\u003c\/p\u003e\n\n\u003cp\u003eStudents can divide the examination material into manageable lessons instead of approaching several large references without a plan. This structure helps candidates identify strong areas and devote more time to subjects that require additional review.\u003c\/p\u003e\n\n\u003cp\u003eThe highlighted and tabbed rental books support organized reference navigation. Working with the same prepared books throughout 1 year of course access can improve familiarity with major chapters, definitions, tables, diagrams, boiler components, and system concepts.\u003c\/p\u003e\n\n\u003cp\u003ePractice-oriented preparation encourages candidates to apply the material through technical questions, system scenarios, reference searches, and troubleshooting exercises. Reviewing missed answers can strengthen understanding and reveal topics that need further attention.\u003c\/p\u003e\n\n\u003cp\u003eThe included Application Service supports the next stage of the licensing journey by helping candidates organize the Delaware application process. The package does not guarantee a passing score, Board approval, or license issuance, but it provides practical resources and a structured preparation system designed to support progress toward the licensing goal.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eFAQ Section\u003c\/h2\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat is included in the Ultimate Exam Prep Rental Package?\u003c\/h2\u003e\n\n\u003cp\u003eThe package includes four highlighted and tabbed rental books, 1 year of course access, and Application Service for the Delaware licensing process.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhich books are included?\u003c\/h2\u003e\n\n\u003cp\u003eThe package includes the \u003cem\u003eInternational Fuel Gas Code, 2018\u003c\/em\u003e, the \u003cem\u003eInternational Mechanical Code, 2018\u003c\/em\u003e, \u003cem\u003eLow Pressure Boilers, 5th Edition\u003c\/em\u003e, and \u003cem\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/em\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eAre all included books highlighted and tabbed?\u003c\/h2\u003e\n\n\u003cp\u003eYes. All included rental books are highlighted and tabbed to support organized study and more efficient reference navigation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow long is course access available?\u003c\/h2\u003e\n\n\u003cp\u003eThe Ultimate package includes 1 year of course access.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much is due today?\u003c\/h2\u003e\n\n\u003cp\u003eThe package price is $1,465. The refundable deposit is $450, bringing the total due today to $1,915.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the $450 deposit refundable?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The $450 deposit is fully refundable when the books are returned in similar condition within the rental period.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow long should I allow for the order?\u003c\/h2\u003e\n\n\u003cp\u003ePlease allow up to 15 business days for ultimate book package orders.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the Delaware examination open book?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The Delaware Master HVACR Restricted Heating – Hydronic Systems and Gas Piping examination is an open-book, timed test.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow many questions are on the examination?\u003c\/h2\u003e\n\n\u003cp\u003eThe published examination outline identifies 80 questions with a three-hour time allowance.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs Application Service included?\u003c\/h2\u003e\n\n\u003cp\u003eYes. Application Service is included to help candidates organize the Delaware professional licensing application process.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eAre state and testing fees included?\u003c\/h2\u003e\n\n\u003cp\u003eNo government application, examination, licensing, or other third-party fees are identified as included with the package.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eDoes purchasing the package guarantee a passing score?\u003c\/h2\u003e\n\n\u003cp\u003eNo. The package provides organized study guidance, rental books, course access, and application support. Examination results depend on the candidate’s qualifications, experience, preparation, and performance.\u003c\/p\u003e\n","brand":"1 Exam Prep","offers":[{"title":"Default Title","offer_id":46240910114873,"sku":null,"price":1915.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1789\/0861\/files\/ULTIMATE_23e992d1-d2cf-42b8-871e-b8f941c89890.jpg?v=1784843877","url":"https:\/\/1examprep.com\/products\/delaware-master-hvacr-restricted-heating-hydronic-systems-gas-piping-contractor-ultimate-exam-prep-rental-package-1","provider":"1 Exam Prep","version":"1.0","type":"link"}