HCR 253 - Residential Heating & AC

1. Demonstrate the proper safety procedures when working on and around air conditioning and heating equipment
2. Explain comfort
   1. List the conditions involved in the feeling of comfort
3. Measure air qualities, i.e., dry bulb, wet bulb, CFM
4. Interpret a psychometric chart
5. Calculate heat loss and heat gain for a residential HVAC system
6. List the types of air filters available for a residential system
7. Select the equipment required to heat and cool a house
8. Explain how to install a humidifier
9. Install, start, adjust and service a gas heating furnace, both standard and high efficiency
   1. Explain the procedures to change a gas furnace to LP
10. Install, start, adjust and service an oil fired furnace
11. Install, start, adjust and service an electric heating system
12. Install, charge, start up and service an air conditioning system
    1. Use a vacuum pump and deep vacuum micron gauge
    2. Use an electronic or other refrigeration scale
    3. Charge a system using a superheat measurement
13. Install charge, start up and service a heat pump system
14. Explain refrigerant recovery, recycling, and reclaiming methods
15. Use a recovery unit to remove refrigerant from systems
16. Identify a DOT approved recovery cylinder and the net refrigerant capacity
17. Do preventive maintenance on HVAC equipment