PSI Contractor License Exam — HVAC Practice Test
Build your confidence for PSI Contractor License Exam — HVAC. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.
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The PSI Contractor License Exam for HVAC is a state-mandated assessment designed to validate the technical knowledge, code compliance understanding, and business competency required to operate as a licensed HVAC contractor. This 55-question exam evaluates a candidate's proficiency across a comprehensive range of topics, from system design and installation to electrical components, refrigeration principles, and adherence to safety and building codes. It is intended for experienced HVAC technicians seeking to advance their careers by obtaining a contractor's license, which legally permits them to bid on projects, pull permits, and run their own business. Successfully passing this exam demonstrates to clients, authorities, and peers that the holder possesses the verified expertise necessary to ensure safe, efficient, and code-compliant heating, ventilation, and air conditioning work.
Sample Questions
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A lab exhaust duct carrying solvent vapors is proposed to connect into a general toilet exhaust riser. The engineer says both are exhaust and discharge outdoors. What is the correct installation principle?
During a tenant improvement, a crew finds that an existing rooftop unit was replaced years ago without visible permit records. The new work will reconnect gas, condensate, duct transitions, and controls. What is the contractor's best first compliance step before concealing the work?
A range hood grease duct has a long horizontal run above a finished ceiling with no cleanout access at a direction change. The installer says the filters are accessible, so duct cleanouts are unnecessary. What is the best response?
An enclosed parking garage exhaust system is set to run only during business hours. CO complaints occur overnight when vehicles idle near an entrance. Which control approach best fits the ventilation hazard?
A contractor is reviewing an Ohio HVAC project where the equipment manual allows a smaller vent connector than the 2024 Ohio Mechanical Code table after a local amendment applies. The owner wants the cheaper connector because the manufacturer's chart is newer. Which reference should control the installation?
Exam insights and study advice
This license is not merely a formality; it is a legal requirement in most jurisdictions to perform HVAC contracting work. Passing the exam directly impacts your professional credibility, earning potential, and legal standing. It allows you to operate independently, take responsibility for large-scale projects, and ensures you have the foundational knowledge to protect public safety, adhere to environmental regulations regarding refrigerants, and deliver systems that perform reliably and efficiently for your clients.