Free practice test — 12 questions with full explanations
Original CraftPATH practice questions. These are not real exam questions. Every answer includes the reasoning, why each wrong option fails, the code area it comes from, and the misconception it targets.
Question 1. To contract for air conditioning installation in Arizona, a company must hold:
Arizona Statutes and Rules · Medium · Objective: Understand Arizona's HVAC licensing structure.
- A. A statewide HVAC technician license
- B. An ROC contractor license in the appropriate mechanical classification, with a listed qualifying party (correct)
- C. Only an EPA Section 608 certification
- D. A county mechanical journeyman card
Correct answer: B. An ROC contractor license in the appropriate mechanical classification, with a listed qualifying party
Why this is right: Arizona regulates contracting rather than individual technicians. The ROC issues the license to the entity, and a qualifying party who passed the required examinations must be listed with it.
Why the other options are wrong:
- A. A statewide HVAC technician license — Arizona does not issue statewide HVAC technician licenses.
- C. Only an EPA Section 608 certification — Section 608 is a federal refrigerant credential, not a contracting license.
- D. A county mechanical journeyman card — Counties do not issue mechanical journeyman cards in place of ROC licensure.
Where this shows up on the job: Technicians relocating from license states often assume their journeyman card transfers, and it does not.
Code reference: A.R.S. Title 32, Chapter 10
Common misconception: Treating EPA 608 as an Arizona license.
Question 2. If the qualifying party resigns from a licensed Arizona mechanical contractor, the company must:
Arizona Statutes and Rules · Medium · Objective: Understand the qualifying party requirement.
- A. Keep operating under the existing license indefinitely
- B. Name and qualify a replacement within the period the ROC allows or the license is suspended (correct)
- C. Convert the license to a handyman exemption
- D. Transfer the license to the departing individual
Correct answer: B. Name and qualify a replacement within the period the ROC allows or the license is suspended
Why this is right: The license rests on a listed qualifying party. The ROC allows a limited window to name a replacement, after which the license is suspended and the company cannot lawfully contract.
Why the other options are wrong:
- A. Keep operating under the existing license indefinitely — The license does not survive without a qualifying party.
- C. Convert the license to a handyman exemption — The small-job exemption does not cover licensed contracting operations.
- D. Transfer the license to the departing individual — The license belongs to the entity, not the individual.
Where this shows up on the job: Shops that keep a second qualified person examined in advance never lose a season to a resignation.
Code reference: A.R.S. Title 32, Chapter 10; A.A.C. Title 4 Chapter 9
Common misconception: Believing the qualifying party is a one-time formality.
Question 3. A fixed-orifice split system in cooling shows high superheat and low subcooling. The most likely cause is:
Refrigeration Cycle and Diagnostics · Hard · Objective: Interpret superheat and subcooling.
- A. Overcharge
- B. Undercharge (correct)
- C. A restricted condenser coil
- D. An oversized evaporator
Correct answer: B. Undercharge
Why this is right: Low subcooling means the condenser is not backing up liquid, and high superheat means the evaporator is starved. Together they point to insufficient refrigerant in the system.
Why the other options are wrong:
- A. Overcharge — An overcharge raises subcooling and lowers superheat.
- C. A restricted condenser coil — A dirty condenser raises head pressure and typically raises subcooling.
- D. An oversized evaporator — Evaporator sizing does not produce this exact pairing.
Where this shows up on the job: Before adding refrigerant, verify airflow and check for a leak, because a system that is low is low for a reason.
Code reference: Manufacturer charging charts; ASHRAE fundamentals
Common misconception: Reading superheat alone without subcooling.
Question 4. A cooling system with a very low suction pressure, low superheat and ice forming on the evaporator most likely has:
Refrigeration Cycle and Diagnostics · Hard · Objective: Diagnose low airflow across an evaporator.
- A. An overcharge of refrigerant
- B. Insufficient airflow across the evaporator coil (correct)
- C. A failed condenser fan motor
- D. An undersized liquid line
Correct answer: B. Insufficient airflow across the evaporator coil
Why this is right: Low airflow removes less heat from the coil, so the refrigerant does not fully boil, suction pressure drops below freezing conditions and the coil ices. Once ice forms, airflow drops further and the fault accelerates.
Why the other options are wrong:
- A. An overcharge of refrigerant — An overcharge typically raises suction and head pressure.
- C. A failed condenser fan motor — A failed condenser fan raises head pressure rather than freezing the evaporator.
- D. An undersized liquid line — A liquid line restriction starves the coil and raises superheat.
Where this shows up on the job: A clogged filter or collapsed flex duct causes far more frozen coils in Arizona homes than an actual refrigerant problem.
Code reference: Manufacturer service data; ACCA airflow guidance
Common misconception: Adding refrigerant to a frozen coil.
Question 5. Residential cooling equipment should be selected using:
Load Calculation, Duct Design and Airflow · Hard · Objective: Apply the correct sizing method.
- A. A fixed 400 square feet per ton rule
- B. A room-by-room load calculation, then equipment selection against the calculated sensible and latent loads (correct)
- C. The size of the equipment being replaced
- D. The largest unit the electrical service will support
Correct answer: B. A room-by-room load calculation, then equipment selection against the calculated sensible and latent loads
Why this is right: A load calculation accounts for orientation, glazing, insulation, infiltration and internal gains. Equipment is then selected against the sensible and latent split at design conditions, not against a square-foot shortcut.
Why the other options are wrong:
- A. A fixed 400 square feet per ton rule — Rules of thumb ignore envelope quality and orientation.
- C. The size of the equipment being replaced — The existing unit may have been wrong from day one.
- D. The largest unit the electrical service will support — Service capacity is not a sizing method.
Where this shows up on the job: Oversized equipment short-cycles, never removes humidity during monsoon season, and wears the compressor out early.
Code reference: ACCA Manual J and Manual S
Common misconception: Believing bigger equipment cools better.
Question 6. The typical design airflow for a residential cooling system is approximately:
Load Calculation, Duct Design and Airflow · Hard · Objective: Apply nominal airflow requirements.
- A. 100 cfm per ton
- B. 400 cfm per ton (correct)
- C. 800 cfm per ton
- D. 1,200 cfm per ton
Correct answer: B. 400 cfm per ton
Why this is right: Roughly 400 cfm per ton is the standard design point, often reduced toward 350 cfm per ton in humid conditions for more latent removal and raised toward 450 in dry climates for more sensible capacity.
Why the other options are wrong:
- A. 100 cfm per ton — 100 cfm per ton would freeze the coil.
- C. 800 cfm per ton — 800 cfm per ton would starve latent removal and raise coil temperature.
- D. 1,200 cfm per ton — 1,200 cfm per ton is far outside any design range.
Where this shows up on the job: Arizona's dry climate favors the high end of the range, but duct systems must actually deliver it against real static pressure.
Code reference: ACCA Manual D and Manual S
Common misconception: Assuming the blower delivers rated airflow regardless of duct restriction.
Question 7. A residential air handler reading well above its rated maximum external static pressure indicates:
Load Calculation, Duct Design and Airflow · Medium · Objective: Interpret external static pressure.
- A. The blower motor is oversized
- B. The duct system is too restrictive for the airflow being pushed (correct)
- C. The refrigerant charge is high
- D. The thermostat is miswired
Correct answer: B. The duct system is too restrictive for the airflow being pushed
Why this is right: External static pressure measures the resistance the blower must overcome. Excessive readings mean undersized ducts, restrictive filters, closed dampers or crushed flex, all of which cut delivered airflow and capacity.
Why the other options are wrong:
- A. The blower motor is oversized — A larger blower does not by itself raise measured static beyond rating.
- C. The refrigerant charge is high — Charge affects pressures in the refrigerant circuit, not air-side static.
- D. The thermostat is miswired — Control wiring does not create airflow resistance.
Where this shows up on the job: Measuring total external static before and after the coil and filter isolates which component is causing the restriction.
Code reference: ACCA Manual D; manufacturer blower tables
Common misconception: Assuming a new, high-efficiency filter cannot hurt airflow.
Question 8. During service on a residential split system, releasing regulated refrigerant to the atmosphere is:
Refrigerant Handling and EPA Compliance · Medium · Objective: Apply venting prohibitions.
- A. Permitted if the quantity is small
- B. Prohibited; refrigerant must be recovered with certified equipment (correct)
- C. Permitted for older refrigerants only
- D. Permitted with a written customer waiver
Correct answer: B. Prohibited; refrigerant must be recovered with certified equipment
Why this is right: Federal rules prohibit knowingly venting regulated refrigerants during service, maintenance, repair or disposal. Recovery with certified equipment by a certified technician is required.
Why the other options are wrong:
- A. Permitted if the quantity is small — There is no small-quantity exemption for deliberate venting.
- C. Permitted for older refrigerants only — Older refrigerants are covered as well.
- D. Permitted with a written customer waiver — A customer cannot waive a federal requirement.
Where this shows up on the job: Purging a line set to atmosphere during a changeout is both a violation and an expensive habit.
Code reference: 40 CFR Part 82 Subpart F
Common misconception: Believing de minimis releases during hose disconnection make deliberate venting acceptable.
Question 9. A technician servicing residential split air conditioning systems needs which EPA Section 608 certification?
Refrigerant Handling and EPA Compliance · Medium · Objective: Identify the right Section 608 certification type.
- A. Type I
- B. Type II (correct)
- C. Type III
- D. No certification is required for residential work
Correct answer: B. Type II
Why this is right: Type II covers high-pressure and very-high-pressure appliances, which includes residential split systems. Type I covers small appliances and Type III covers low-pressure appliances such as centrifugal chillers.
Why the other options are wrong:
- A. Type I — Type I is for small appliances charged with five pounds or less.
- C. Type III — Type III is for low-pressure equipment.
- D. No certification is required for residential work — Certification is required to open any appliance containing regulated refrigerant.
Where this shows up on the job: Universal certification covers all three types and is the practical choice for a service technician.
Code reference: 40 CFR Part 82 Subpart F
Common misconception: Assuming residential work falls under Type I.
Question 10. A Category IV condensing furnace must be vented with:
Combustion, Venting and Gas Piping · Hard · Objective: Apply appliance category venting rules.
- A. Type B double-wall vent shared with the water heater
- B. Listed corrosion-resistant vent material suitable for positive pressure and condensate, run per the manufacturer's instructions (correct)
- C. Single-wall galvanized pipe with a natural draft
- D. A masonry chimney with no liner
Correct answer: B. Listed corrosion-resistant vent material suitable for positive pressure and condensate, run per the manufacturer's instructions
Why this is right: Category IV appliances vent under positive pressure with condensing flue gases. The vent must be gas-tight, corrosion resistant, and pitched to drain condensate, exactly as the manufacturer's listed instructions specify.
Why the other options are wrong:
- A. Type B double-wall vent shared with the water heater — Type B vent is for natural draft Category I appliances and cannot handle positive pressure or condensate.
- C. Single-wall galvanized pipe with a natural draft — Single-wall natural draft venting will leak flue gas under positive pressure.
- D. A masonry chimney with no liner — An unlined masonry chimney will deteriorate rapidly from acidic condensate.
Where this shows up on the job: Orphaning a water heater on an oversized chimney after a furnace upgrade causes condensation and backdrafting.
Code reference: International Fuel Gas Code; NFPA 54; manufacturer instructions
Common misconception: Treating all gas appliance venting as interchangeable.
Question 11. Branch circuit conductors for an air conditioning condensing unit are sized using:
HVAC Electrical and Controls · Hard · Objective: Apply minimum circuit ampacity.
- A. The compressor nameplate running amperes alone
- B. The minimum circuit ampacity marked on the equipment nameplate (correct)
- C. The maximum overcurrent protection value marked on the nameplate
- D. The locked rotor amperes
Correct answer: B. The minimum circuit ampacity marked on the equipment nameplate
Why this is right: The manufacturer calculates minimum circuit ampacity for the equipment and marks it on the nameplate. Conductors are sized to that value, while the separate maximum overcurrent protection marking sets the largest permitted breaker or fuse.
Why the other options are wrong:
- A. The compressor nameplate running amperes alone — Running amperes omits the required multiplier and other loads in the unit.
- C. The maximum overcurrent protection value marked on the nameplate — The maximum overcurrent value is a protection limit, not a conductor size.
- D. The locked rotor amperes — Locked rotor current is a starting characteristic.
Where this shows up on the job: Sizing wire to the breaker instead of to the minimum circuit ampacity is the most common HVAC electrical mistake.
Code reference: NEC 440.4 and 440.32; equipment nameplate
Common misconception: Assuming conductors must match the breaker rating.
Question 12. The disconnecting means for an outdoor condensing unit must be:
HVAC Electrical and Controls · Medium · Objective: Apply disconnect location rules.
- A. At the main panel only
- B. Within sight from and readily accessible from the equipment (correct)
- C. Anywhere on the property if labeled
- D. Omitted if the breaker can be locked out
Correct answer: B. Within sight from and readily accessible from the equipment
Why this is right: The disconnect must be within sight from and readily accessible from the air conditioning or refrigerating equipment so a technician can confirm the equipment is de-energized before servicing.
Why the other options are wrong:
- A. At the main panel only — An indoor panel is not within sight of the outdoor unit.
- C. Anywhere on the property if labeled — A label does not substitute for the within-sight requirement here.
- D. Omitted if the breaker can be locked out — A lockable breaker does not satisfy this specific requirement.
Where this shows up on the job: Condensers hidden behind block walls or dense landscaping with no local disconnect are a routine inspection correction.
Code reference: NEC 440.14
Common misconception: Reading within sight as somewhere nearby.
How to study for the Arizona HVAC contractor exam
Treat statutes and rules as a separate exam
The Arizona statutes-and-rules exam covers classifications and scope, the qualifying party, bonding and the recovery fund, contract and advertising requirements, and the complaint process. None of it requires calculation, which makes it the cheapest block of points on the path to licensure.
Build the diagnostic reflex
Practice reading systems by paired readings rather than single numbers: superheat with subcooling, suction with head pressure, temperature split with measured airflow. Write out the four classic fault patterns, undercharge, overcharge, low airflow and restriction, until you can name each from its symptom set instantly.
Know Manual J, S and D as one workflow
Load calculation determines the load, equipment selection matches sensible and latent capacity to it at design conditions, and duct design delivers the airflow the equipment needs. Exam questions often test whether you know which step a given input belongs to.
Get EPA 608 out of the way
Section 608 certification is a federal requirement independent of the ROC license, and the refrigerant handling material overlaps directly with the trade exam. Passing 608 first makes the recovery, evacuation and leak repair questions on the trade exam free points.
Run a six-week plan
Week one: Arizona statutes and rules. Week two: refrigeration cycle and diagnostics. Week three: load calculation, duct design and airflow. Week four: refrigerant handling and EPA compliance. Week five: combustion, venting, gas piping and HVAC electrical. Week six: full-length timed sets under exam conditions.