HVAC Basics
Tools and Equipmen
Troubleshooting
Energy Efficiency
Regulations and Codes
100

What does HVAC stand for

  • : Heating, Ventilation, and Air Conditioning)


100

What tool is used to measure air velocity

  • Anemometer)


100

What could be the cause if an HVAC system is not blowing cold air?

: Low refrigerant levels)

100

What is one way to improve HVAC energy efficiency

 Regular maintenance and filter replacement)

100

What organization sets standards for HVAC systems?

 ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers)

200

What is the primary function of an evaporator coil?

To absorb heat from the air in the home)

200

What is a manifold gauge set used for

 To measure the pressure of refrigerants)

200

What might cause an HVAC system to trip the circuit breaker

  • Overloaded circuit or short circuit)


200

What does EER stand for

Energy Efficiency Ratio)

200

What is the EPA’s refrigerant management program called?

 Section 608 Certification)

300

What refrigerant is commonly used in residential HVAC systems

R-410A)

300

What does a vacuum pump do in an HVAC system

 Removes air and moisture from the system)

300

What should be checked if an HVAC system is making loud noises

Loose components or debris in the unit)

300

How does a programmable thermostat save energy

By adjusting the temperature based on a set schedule)

300

 What does OSHA stand for?



    •  Occupational Safety and



Health Administration)


400

: What does a heat pump do

Transfers heat from outside to inside during winter and vice versa in summer)

400

Name the device used to detect refrigerant leaks.

Electronic leak detector

400

 What does a frozen evaporator coil indicate?

Poor airflow or low refrigerant

400

What is the purpose of an energy recovery ventilator (ERV)

To exchange stale indoor air with fresh outdoor air while retaining energy)

400


What is the maximum allowable refrigerant leak rate for commercial HVAC systems?

 20% of the charge per year for comfort cooling)

500

What is SEER rating?

Seasonal Energy Efficiency Ratio

500

What is the purpose of a TXV (Thermostatic Expansion Valve)

 Regulates the amount of refrigerant flow into the evaporator)

500

What could cause uneven cooling in a building?

Ductwork issues or thermostat placement)

500

What is a high-efficiency furnace's AFUE rating

Typically 90% or higher

500

can you release refrigerant into atmosphere, if so how much

the minumis