{"product_id":"texas-commercial-refrigeration-class-b-contractor-book-package","title":"Texas Commercial Refrigeration Class B Contractor Book Package","description":"\u003ch1 style=\"color: #d32f2f;\"\u003eTexas Commercial Refrigeration Class B Contractor Book Package\u003c\/h1\u003e\n\n\u003cp\u003ePrepare for the Texas Commercial Refrigeration Class B Contractor examination with a focused collection of Texas licensing references, current mechanical and fuel-gas codes, refrigeration technical material, workplace safety information, and air-distribution resources. This book package is designed for candidates pursuing the \u003cstrong\u003eTexas Commercial Refrigeration Class B\u003c\/strong\u003e contractor license through the Texas Department of Licensing and Regulation.\u003c\/p\u003e\n\n\u003cp\u003eThe Commercial Refrigeration endorsement covers the use of mechanical or absorption equipment to control temperature or humidity for the intended use of a specific space. Texas also recognizes process cooling or heating within the applicable refrigeration endorsement structure. A \u003cstrong\u003eClass B\u003c\/strong\u003e license authorizes qualifying work on individual cooling systems with a capacity of not more than \u003cstrong\u003e25 tons\u003c\/strong\u003e and individual heating systems with an output of not more than \u003cstrong\u003e1.5 million Btu per hour\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe Texas Commercial Refrigeration Class B examination covers a broad range of contractor-level HVACR subjects. Candidates should be prepared for questions involving refrigeration components, refrigeration principles, controls, piping, equipment requirements, HVACR systems and design, service, testing, safety, combustion air, and air distribution.\u003c\/p\u003e\n\n\u003cp\u003eTexas also requires contractors to understand the laws and administrative rules that govern Air Conditioning and Refrigeration Contractor licensing. This package therefore combines technical refrigeration materials with the Texas Occupations Code and Texas Administrative Code references that apply to licensed contractors.\u003c\/p\u003e\n\n\u003cp\u003eBeginning September 1, 2026, Texas updated its adopted mechanical and fuel-gas codes from the 2021 editions to the \u003cstrong\u003e2024 editions\u003c\/strong\u003e. This package includes the \u003cstrong\u003e2024 Uniform Mechanical Code\u003c\/strong\u003e, \u003cstrong\u003e2024 International Mechanical Code\u003c\/strong\u003e, and \u003cstrong\u003e2024 International Fuel Gas Code\u003c\/strong\u003e so candidates can prepare using the current Texas code framework.\u003c\/p\u003e\n\n\u003cp\u003eThe package also includes \u003cstrong\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/strong\u003e, which supports technical review of refrigeration cycles, system components, controls, installation, troubleshooting, service, and HVACR operation. A \u003cstrong\u003eDuctulator\u003c\/strong\u003e is included to support air-distribution study involving airflow, duct sizing, velocity, and friction rate.\u003c\/p\u003e\n\n\u003cp\u003eBecause the examination covers multiple technical areas, candidates benefit from knowing which reference applies to each type of question. Mechanical-code questions may lead to the IMC or UMC, gas and combustion questions may require the IFGC, licensing questions require Texas law and rules, and refrigeration theory or service questions may require the technical textbook.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Details\u003c\/h2\u003e\n\n\u003cp\u003eThe Texas Commercial Refrigeration Class B examination is one of the contractor endorsement examinations offered by the \u003cstrong\u003eTexas Department of Licensing and Regulation\u003c\/strong\u003e and administered through \u003cstrong\u003ePSI\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExam:\u003c\/strong\u003e Texas Commercial Refrigeration Class B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLicensing Agency:\u003c\/strong\u003e Texas Department of Licensing and Regulation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTesting Provider:\u003c\/strong\u003e PSI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScored Questions:\u003c\/strong\u003e 100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassing Score:\u003c\/strong\u003e 70%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExam Type:\u003c\/strong\u003e Open book\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLicense Class:\u003c\/strong\u003e Class B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEndorsement:\u003c\/strong\u003e Commercial Refrigeration and Process Cooling or Heating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe current Texas examination blueprint distributes the 100 scored questions across the following technical areas:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Distribution:\u003c\/strong\u003e 5 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBasic Refrigeration Components:\u003c\/strong\u003e 8 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCombustion Air:\u003c\/strong\u003e 3 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e 11 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEquipment Requirements:\u003c\/strong\u003e 10 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHVACR Systems and Design:\u003c\/strong\u003e 17 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePiping:\u003c\/strong\u003e 9 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRefrigeration Principles:\u003c\/strong\u003e 8 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e 6 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService:\u003c\/strong\u003e 9 questions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e 5 questions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eHVACR Systems and Design\u003c\/strong\u003e is the largest individual subject area with 17 questions. Controls is another major category with 11 questions, followed by Equipment Requirements with 10. Piping and Service each account for nine questions, while Basic Refrigeration Components and Refrigeration Principles each account for eight.\u003c\/p\u003e\n\n\u003cp\u003eThis distribution makes broad preparation important. A candidate who concentrates only on refrigeration theory may miss significant portions of the test involving controls, equipment requirements, system design, piping, troubleshooting, safety, and testing.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eOpen Book Test\u003c\/h2\u003e\n\n\u003cp\u003eThe Texas Commercial Refrigeration Class B Contractor examination is an \u003cstrong\u003eopen book test\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eCandidates should prepare their approved references before the examination and become familiar with the organization of each book. Open-book testing provides access to reference materials, but candidates still need enough technical knowledge to determine which reference and section applies to a particular question.\u003c\/p\u003e\n\n\u003cp\u003eApproved examination references may be prepared in accordance with current PSI rules. Candidates should organize permitted materials before the examination and become comfortable finding commonly tested subjects quickly.\u003c\/p\u003e\n\n\u003cp\u003eMechanical-code questions may require the Uniform Mechanical Code or International Mechanical Code. Fuel-gas and combustion-air questions may lead to the International Fuel Gas Code. Texas licensing questions require knowledge of Chapter 1302 of the Texas Occupations Code and Chapter 75 of the Texas Administrative Code.\u003c\/p\u003e\n\n\u003cp\u003eTechnical questions involving compressors, refrigeration cycles, system pressures, controls, refrigerant charging, troubleshooting, or commercial refrigeration equipment can also require knowledge developed through \u003cstrong\u003eModern Refrigeration and Air Conditioning\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe current Texas code framework uses the \u003cstrong\u003e2024 International Mechanical Code\u003c\/strong\u003e, \u003cstrong\u003e2024 International Fuel Gas Code\u003c\/strong\u003e, and \u003cstrong\u003e2024 Uniform Mechanical Code\u003c\/strong\u003e, effective September 1, 2026.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eLicensing Steps\u003c\/h2\u003e\n\n\u003cp\u003eTexas Air Conditioning and Refrigeration Contractor licensing is administered through TDLR. Applicants must satisfy the applicable eligibility requirements before taking the contractor examination and completing licensure.\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeet the minimum age requirement.\u003c\/strong\u003e Applicants must be at least 18 years old.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeet an approved experience pathway.\u003c\/strong\u003e The standard pathway requires at least 48 months of practical air-conditioning and refrigeration experience during the preceding 72 months.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDocument qualifying practical experience.\u003c\/strong\u003e Experience must satisfy TDLR requirements and be properly verified as part of the contractor application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelect Class B and the Commercial Refrigeration endorsement.\u003c\/strong\u003e The selected class and endorsement determine the examination and the scope of work authorized after licensure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubmit the Air Conditioning and Refrigeration Contractor application.\u003c\/strong\u003e TDLR reviews applicant eligibility before examination authorization.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReceive examination eligibility.\u003c\/strong\u003e After TDLR approves eligibility, PSI provides instructions for registering and scheduling the applicable examination.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrepare for the Commercial Refrigeration Class B examination.\u003c\/strong\u003e Study the current codes, technical references, Texas licensing law, and refrigeration subjects covered by the examination blueprint.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTake the required examination.\u003c\/strong\u003e Complete the PSI examination according to the applicable testing procedures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAchieve the required passing score.\u003c\/strong\u003e The passing standard for the contractor examination is 70%.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete the remaining licensing requirements.\u003c\/strong\u003e Follow TDLR procedures for any additional documents or requirements that apply before the license is issued.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eState Requirements\u003c\/h2\u003e\n\n\u003cp\u003eThe Texas Air Conditioning and Refrigeration Contractors program provides two contractor license classes: Class A and Class B. The license class determines the equipment capacity on which the contractor may perform authorized work.\u003c\/p\u003e\n\n\u003cp\u003eA \u003cstrong\u003eClass B Commercial Refrigeration and Process Cooling or Heating\u003c\/strong\u003e license authorizes qualifying refrigeration contracting involving a system, product, or individual piece of equipment with no more than \u003cstrong\u003e25 tons of cooling capacity\u003c\/strong\u003e or \u003cstrong\u003e1.5 million Btu per hour of heating output\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe Commercial Refrigeration endorsement applies to the use of mechanical or absorption equipment to control temperature or humidity in order to satisfy the intended use of a particular space. Process Cooling or Heating relates to control of temperature, humidity, or cleanliness for production requirements or proper operation of equipment.\u003c\/p\u003e\n\n\u003cp\u003eThe Class B license differs from Class A primarily in its capacity limitation. A Class A license permits work on equipment of any size within the authorized endorsement, while Class B remains subject to the applicable cooling and heating capacity limits.\u003c\/p\u003e\n\n\u003cp\u003eThe standard Texas experience pathway requires at least \u003cstrong\u003e48 months of practical air-conditioning and refrigeration experience during the preceding 72 months\u003c\/strong\u003e. Applicants must document qualifying experience according to TDLR requirements.\u003c\/p\u003e\n\n\u003cp\u003eTexas also recognizes qualifying experience through certain alternate pathways. Applicants should use the pathway that applies to their individual experience and licensing history when completing the contractor application.\u003c\/p\u003e\n\n\u003cp\u003ePassing the examination is one step in the licensing process. Applicants must complete all applicable TDLR requirements before performing work as a licensed Texas Air Conditioning and Refrigeration Contractor.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eReference Books\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTexas Air Conditioning and Refrigeration Contractors License Law, Texas Occupations Code, Chapter 1302\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eCovers the Texas statutory framework governing Air Conditioning and Refrigeration Contractor licensing, license classes, endorsements, responsibilities, enforcement, and regulatory authority.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eTexas Air Conditioning and Refrigeration Contractors License Rules, Texas Administrative Code, Chapter 75\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eContains the administrative rules governing Texas Air Conditioning and Refrigeration Contractors, including licensing requirements, contractor responsibilities, standards, and regulatory procedures.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eOSHA 29 CFR 1904\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eCovers occupational injury and illness recordkeeping and reporting requirements and supports preparation for contractor safety and compliance subjects.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eUniform Mechanical Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA current mechanical-code resource covering refrigeration, mechanical equipment, ventilation, duct systems, combustion air, piping, machinery spaces, and related mechanical requirements.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eInternational Mechanical Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eCovers HVACR equipment, mechanical-system installation, commercial refrigeration, ventilation, exhaust systems, refrigeration machinery, piping, and related mechanical-code provisions.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eInternational Fuel Gas Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eAddresses fuel-gas systems, gas piping, combustion air, fuel-burning appliances, pressure testing, shutoff requirements, venting, and related safety requirements.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA comprehensive technical reference covering refrigeration principles, compressors, condensers, evaporators, metering devices, commercial refrigeration, controls, service, troubleshooting, electrical systems, and HVACR operation.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eDuctulator\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA practical air-distribution tool used to work with duct size, airflow, velocity, friction rate, and other duct-system relationships that support HVACR system design and troubleshooting.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eExam Room Approved Books\u003c\/h2\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTexas Air Conditioning and Refrigeration Contractors License Law, Texas Occupations Code, Chapter 1302\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA Texas licensing-law reference used for contractor examination preparation and licensing requirements.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eTexas Air Conditioning and Refrigeration Contractors License Rules, Texas Administrative Code, Chapter 75\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe Texas administrative-rule reference governing Air Conditioning and Refrigeration Contractors.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eOSHA 29 CFR 1904\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe occupational injury and illness recordkeeping and reporting reference included with the contractor study materials.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eUniform Mechanical Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe 2024 Uniform Mechanical Code reflects the current Texas mechanical-code framework effective September 1, 2026.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eInternational Mechanical Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe 2024 International Mechanical Code reflects the current mechanical requirements adopted within the Texas ACR regulatory framework.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eInternational Fuel Gas Code, 2024\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eThe 2024 International Fuel Gas Code provides current fuel-gas requirements applicable to contractor preparation.\u003c\/span\u003e\n\u003c\/li\u003e\n\n  \u003cli\u003e\n\u003cstrong\u003eModern Refrigeration and Air Conditioning, 22nd Edition\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eA primary technical study reference for refrigeration principles, components, controls, service, system operation, and troubleshooting.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eDuctulator\u003c\/strong\u003e included with this package is a useful air-distribution and calculation tool. Candidates should follow the current PSI examination reference and materials rules when determining which specific calculation aids may be brought into the examination room.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eTest Information and Study Materials\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eHVACR Systems and Design:\u003c\/strong\u003e With approximately 17 questions, this is the largest area of the Commercial Refrigeration Class B examination. Review complete refrigeration systems, equipment application, system configuration, operating conditions, load considerations, installation requirements, and commercial refrigeration design principles.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eControls:\u003c\/strong\u003e Approximately 11 questions focus on controls. Study thermostats, pressure controls, relays, contactors, solenoid valves, defrost controls, temperature controllers, safety controls, and electrical control sequences.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEquipment Requirements:\u003c\/strong\u003e Approximately 10 questions cover equipment requirements. Review proper installation, access, clearances, manufacturer requirements, machinery-space provisions, equipment ratings, and mechanical-code requirements.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePiping:\u003c\/strong\u003e Approximately nine questions involve piping. Study suction, discharge, and liquid lines, refrigerant piping practices, pressure considerations, oil return, insulation, piping support, fittings, valves, and installation procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eService:\u003c\/strong\u003e Approximately nine questions cover service and troubleshooting. Review compressor problems, refrigerant charging, electrical diagnosis, airflow problems, system pressures, leak detection, evacuation, refrigerant recovery, and operating conditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBasic Refrigeration Components:\u003c\/strong\u003e Approximately eight questions test knowledge of compressors, condensers, evaporators, metering devices, receivers, accumulators, filter-driers, sight glasses, and other common refrigeration components.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRefrigeration Principles:\u003c\/strong\u003e Approximately eight questions involve the refrigeration cycle and related physical principles. Review heat transfer, sensible heat, latent heat, saturation, pressure-temperature relationships, superheat, subcooling, compression, condensation, expansion, and evaporation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSafety:\u003c\/strong\u003e Approximately six questions address safety. Study electrical hazards, refrigerant handling, high-pressure conditions, personal protective equipment, workplace procedures, and safe servicing practices.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAir Distribution:\u003c\/strong\u003e Approximately five questions involve air distribution. Review airflow, duct sizing, friction rate, velocity, static pressure, and basic supply and return concepts. The included Ductulator can support practice in this area.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTesting:\u003c\/strong\u003e Approximately five questions cover testing procedures. Review electrical measurements, pressure measurements, temperature measurements, superheat, subcooling, refrigerant testing, leak testing, and evaluation of refrigeration-system performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCombustion Air:\u003c\/strong\u003e Approximately three questions address combustion air. Review mechanical-code and fuel-gas requirements when fuel-burning equipment is involved in an installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommercial Refrigeration Equipment:\u003c\/strong\u003e Become familiar with systems such as walk-in coolers, walk-in freezers, reach-in equipment, condensing units, evaporators, ice-making equipment, and related commercial refrigeration applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompressors:\u003c\/strong\u003e Review compressor types, operation, lubrication, electrical requirements, failure conditions, capacity, and the role of the compressor within the refrigeration cycle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMetering Devices:\u003c\/strong\u003e Understand thermostatic expansion valves, fixed metering devices, and other refrigerant-flow controls. Review how metering affects evaporator operation, superheat, and system performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDefrost:\u003c\/strong\u003e Study applicable defrost methods, controls, timers, termination methods, and system behavior during and after a defrost cycle.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuperheat and Subcooling:\u003c\/strong\u003e Be comfortable with the concepts and their use when evaluating system operation and refrigerant charge.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTexas Laws and Rules:\u003c\/strong\u003e Review Texas Occupations Code Chapter 1302 and Texas Administrative Code Chapter 75 so technical preparation is supported by an understanding of the responsibilities and limitations associated with the contractor license.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eReference Navigation:\u003c\/strong\u003e Practice identifying the nature of the question before opening a book. A refrigeration-theory question may lead to Modern Refrigeration and Air Conditioning, a mechanical installation question to the IMC or UMC, a combustion question to the IFGC, and a contractor-law question to Texas statutes or administrative rules.\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 helps Texas Commercial Refrigeration Class B candidates organize multiple contractor references into a practical preparation strategy. The examination covers many different subjects, so structured study can help candidates devote attention to both heavily tested areas and smaller categories that still contribute to the overall score.\u003c\/p\u003e\n\n\u003cp\u003eTrade-focused review can reinforce HVACR systems and design, controls, equipment requirements, piping, refrigeration components, refrigeration principles, service, testing, air distribution, safety, and combustion air.\u003c\/p\u003e\n\n\u003cp\u003eReference-navigation practice is especially useful for an open-book examination. Candidates can learn which book is most likely to contain the information needed for a question and practice moving efficiently between Texas regulations, mechanical codes, fuel-gas provisions, and refrigeration technical material.\u003c\/p\u003e\n\n\u003cp\u003eModern Refrigeration and Air Conditioning provides a foundation for technical subjects such as system operation, component function, controls, service, and troubleshooting. The mechanical and fuel-gas codes support questions involving installation requirements and code compliance.\u003c\/p\u003e\n\n\u003cp\u003eThe Texas licensing references help candidates understand the regulatory side of operating as a Class B Commercial Refrigeration Contractor, including license class limitations, endorsement scope, contractor responsibilities, and state requirements.\u003c\/p\u003e\n\n\u003cp\u003eThe Ductulator provides an additional preparation tool for air-distribution questions and can help reinforce relationships between airflow, duct dimensions, friction, and velocity.\u003c\/p\u003e\n\n\u003cp\u003eThe goal is to connect practical refrigeration experience with organized technical review, code navigation, system troubleshooting, safety knowledge, and Texas contractor requirements. This structured preparation supports exam readiness without guaranteeing a particular testing or licensing outcome.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eIs the Texas Commercial Refrigeration Class B exam open book?\u003c\/h2\u003e\n\n\u003cp\u003eYes. The Texas Commercial Refrigeration Class B examination is an \u003cstrong\u003eopen book test\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow many scored questions are on the examination?\u003c\/h2\u003e\n\n\u003cp\u003eThe current Commercial Refrigeration Class B examination contains \u003cstrong\u003e100 scored questions\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat score is required to pass?\u003c\/h2\u003e\n\n\u003cp\u003eThe current passing score is \u003cstrong\u003e70%\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWho administers the examination?\u003c\/h2\u003e\n\n\u003cp\u003eThe Texas Commercial Refrigeration Class B examination is administered through \u003cstrong\u003ePSI\u003c\/strong\u003e for the Texas Department of Licensing and Regulation.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat does a Texas Class B license allow?\u003c\/h2\u003e\n\n\u003cp\u003eA Class B license allows qualifying work on individual cooling systems of no more than \u003cstrong\u003e25 tons\u003c\/strong\u003e and individual heating systems of no more than \u003cstrong\u003e1.5 million Btu per hour\u003c\/strong\u003e within the license holder's authorized endorsement.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat does the Commercial Refrigeration endorsement cover?\u003c\/h2\u003e\n\n\u003cp\u003eCommercial Refrigeration involves mechanical or absorption equipment used to control temperature or humidity to satisfy the intended use of a particular space.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat is Process Cooling or Heating?\u003c\/h2\u003e\n\n\u003cp\u003eProcess Cooling or Heating involves control of temperature, humidity, or cleanliness for production requirements or the proper operation of equipment.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat code editions apply beginning September 1, 2026?\u003c\/h2\u003e\n\n\u003cp\u003eTexas updated its adopted mechanical and fuel-gas framework to the \u003cstrong\u003e2024 International Mechanical Code\u003c\/strong\u003e, \u003cstrong\u003e2024 International Fuel Gas Code\u003c\/strong\u003e, and \u003cstrong\u003e2024 Uniform Mechanical Code\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhich subject has the most exam questions?\u003c\/h2\u003e\n\n\u003cp\u003eHVACR Systems and Design is the largest current category, with approximately \u003cstrong\u003e17 questions\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eAre controls an important exam topic?\u003c\/h2\u003e\n\n\u003cp\u003eYes. Controls account for approximately \u003cstrong\u003e11 questions\u003c\/strong\u003e and are one of the largest individual content areas.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy is Modern Refrigeration and Air Conditioning important?\u003c\/h2\u003e\n\n\u003cp\u003eThe book supports preparation for refrigeration cycles, components, controls, system design, service, troubleshooting, electrical concepts, and commercial refrigeration applications.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhy is the Ductulator included?\u003c\/h2\u003e\n\n\u003cp\u003eThe Ductulator supports air-distribution study by helping candidates work with duct size, airflow, friction rate, and velocity relationships.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eHow much practical experience is required under the standard pathway?\u003c\/h2\u003e\n\n\u003cp\u003eThe standard licensing pathway requires at least \u003cstrong\u003e48 months of qualifying practical air-conditioning and refrigeration experience during the preceding 72 months\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch2 style=\"color: #d32f2f;\"\u003eWhat should I focus on during final preparation?\u003c\/h2\u003e\n\n\u003cp\u003eFocus on HVACR systems and design, controls, equipment requirements, piping, service, refrigeration components, refrigeration principles, safety, testing, air distribution, current mechanical and fuel-gas codes, and Texas contractor laws and rules.\u003c\/p\u003e\n\nCurrent TDLR materials confirm the Commercial Refrigeration B examination, the 100-question topic blueprint, the Class B capacity limits, and the September 1, 2026 transition to the 2024 code editions. ([Texas Licensing and Regulation][1])\n\n\n","brand":"1 Exam Prep","offers":[{"title":"Default Title","offer_id":50514293391417,"sku":null,"price":1045.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1789\/0861\/files\/TX-REFRIGERATIONB-BOOKS.jpg?v=1790259485","url":"https:\/\/1examprep.com\/products\/texas-commercial-refrigeration-class-b-contractor-book-package","provider":"1 Exam Prep","version":"1.0","type":"link"}