Workplace Training
HVAC Quiz: Test Your Technical Knowledge
This HVAC quiz helps you check core heating, cooling, and refrigeration concepts with 15 quick questions. When you want more practice, try hvac quiz questions for extra drills, explore the hvac troubleshooting quiz for fault-finding skills, or take the deeper hvac assessment test to gauge your readiness.
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1Which component in an HVAC system is responsible for compressing the refrigerant?
2What is the primary fun<wbr>ction of the evaporator coil in a refrigeration cycle?
3Which safety equipment is essential when handling refrigerants?
4Which instrument is commonly used to measure refrigerant pressure in HVAC systems?
5What is the purpose of an air filter in an HVAC system?
6During the refrigeration cycle, where does the refrigerant release heat?
7A room requires 400 CFM per person for ventilation. For 5 occupants, what is the total CFM needed?
8What does superheat in a refrigeration system indicate?
9Which tool is used to detect refrigerant leaks in HVAC systems?
10What could ice formation on an evaporator coil indicate?
11What maintenance task directly improves heat exchanger efficiency?
12How do you calculate static pressure in an air duct?
13Which refrigerant handling practice is correct for environmental safety?
14If an HVAC system has high indoor humidity, what is a likely cause?
15What is subcooling in a refrigeration system?
16Using the equal friction method, what is the benefit when duct sizing?
17In psychrometrics, which parameter represents the water vapor content in the air?
18What troubleshooting step should you take first when diagnosing a non-cycling compressor?
19Calculate the annual energy savings if a new high-efficiency motor uses 1.2 kW instead of 1.5 kW, running 2000 hours per year at $0.10 per kWh.
20When using a pressure-temperature chart for R-410A, what pressure corresponds approximately to a 40[@U00C2][@U00B0]F saturation temperature?
Learning Goals
Learning Outcomes
- Analyse HVAC system components and their functions.
- Identify key refrigeration cycle stages and principles.
- Apply proper airflow and ventilation calculations.
- Demonstrate safe handling of refrigerants and tools.
- Evaluate troubleshooting steps for common HVAC issues.
- Master basic maintenance and efficiency optimization techniques.
Study Guide
Cheat Sheet
- Understand the Core Components of HVAC Systems - HVAC systems rely on a thermostat for control, a heat exchanger to move warmth, an evaporator coil to absorb indoor heat, and ductwork to circulate air. Knowing these parts is like mastering the alphabet of heating and cooling - you can't spell comfort without them. hvac.com
- Master the Refrigeration Cycle Stages - The magic of cooling happens in four steps: compression squeezes refrigerant, condensation dumps heat, expansion lowers pressure, and evaporation soaks up warmth. Understanding this flow helps you troubleshoot why your AC isn't chilling like it should. rigidhvac.com
- Apply Airflow and Ventilation Calculations - Accurate airflow and ventilation math ensure every room gets fresh, balanced air without wasting energy. Practice using formulas for CFM (cubic feet per minute) and ACH (air changes per hour) so your system performs like a pro athlete. Energy Star
- Emphasize Safe Handling of Refrigerants and Tools - Refrigerants can be dangerous if mishandled - always wear protective gear and follow EPA guidelines to prevent leaks or frostbite. Proper training and certified equipment keep you and the environment safe. EPA Section 608 Guide
- Develop Troubleshooting Skills for Common HVAC Issues - Systematically checking filters, airflow, thermostat settings, and refrigerant pressure turns confusion into clarity when things go wrong. Building a mental checklist helps you pinpoint faults quickly and restore comfort sooner. HVAC Troubleshooting
- Implement Maintenance and Efficiency Optimization Techniques - Regular filter changes, coil cleanings, and calibration checks keep your unit running smoothly and lower energy bills. Preventive upkeep is like a health checkup for your HVAC - avoiding big breakdowns before they start. Energy Saver
- Recognize the Importance of the Heat Exchanger - The heat exchanger is the heart of a furnace, moving warmth from combustion gases into your home's air without mixing the two. A cracked or dirty exchanger can cause safety hazards or performance drops, so inspect it often. mechanicaljungle.org
- Learn About the Function of the Evaporator Coil - Acting like a sponge, the evaporator coil soaks up heat from indoor air when refrigerant flows through it. Proper coil maintenance ensures efficient cooling and prevents icing or blockages. mechanicaljungle.org
- Understand the Role of the Condenser Coil - The condenser coil releases heat gathered from inside your home into the outdoor air, completing the refrigeration cycle. Clean, unobstructed fins help the coil shed heat faster and keep your AC running at peak efficiency. hvac.com
- Familiarize Yourself with Different Types of Compressors - From reciprocating and rotary to scroll and screw compressors, each design has unique strengths for various applications. Matching the right compressor to the job boosts reliability and lowers operating costs. rigidhvac.com
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Updated Feb 19, 2026