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Unit 39 Residential Energy Audit Question and answers 2023/2024 verified to pass
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Unit 39 Residential Energy Audit Question and answers 2023/2024 verified to passDefine a residential energy audit - correct answer A residential energy audit can be defined as the steps taken increase the homeowner's comfort, safety, and health and the life of the house. While conserving energy and...

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  • February 7, 2024
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  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • unit 39 residential energy audit question and answ

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Unit 39 Residential Energy Audit
Define a residential energy audit - correct answer A residential energy audit can be defined as the steps taken increase the homeowner's comfort, safety, and health and the life of the house. While conserving energy and saving the homeowner money
Name and Briefly explain the three broad categories of a residential of a residential energy audit. - correct answer 1. Screening, visual inspections and measurements:
2. Diagnostic testing
3. Numerical analysis with reporting
Name two nationally recognized energy certifications for home auditors and contractors - correct answer 1. (BPI) Building Performance Institute 2. (RESNET) Residential Energy Services Network
Performing a home energy audit starts with a visual inspection of a home and it's energy systems which include - correct answer The building envelope, HVAC systems, base load inspections and indoor air quality.
Name seven base loads or LAMEL loads as they apply to a residential energy audit - correct answer Lights, refrigerators, freezers, water heaters, clothes dryers, computers, printers, copiers, cell phone chargers.
Name and briefly explain the five most common diagnostic tests performed during a residential energy audit - correct answer 1. Blower door testing: It gives the auditor insight on how tight or leaky the home's building envelope is overall.
2. Infrared scanning testing:
What is one pascal is equal to? - correct answer One pascal is equal to 0.00401865 inches of water column. What is one inch of water column is equal? - correct answer One inch of water column is equal to 250 pascals.
Describe the blower door test. - correct answer The blower door test is used to measure the air leakage into and out of a home. The blower door blows air out of the house bringing it to a standard pressure. The the air flowing through the blower door is measured which determines the severity of your home's air leaks and your home's energy efficiency.
What can an infrared scanning camera do for an auditor that a blower door test cannot do? - correct answer An infrared scanning camera can show the exact location of leaks which is something the blower
door test cannot do.
What is the function of the duct blower? - correct answer A duct blowers function is used to measure the airtightness of forced air heating, ventilating and air-conditioning (HVAC) ductwork during residential energy audits.
describe how to check for duct leakage to the outdoors using a duct blower and a blower door. - correct answer The following procedures are describe how to check for duct leakage to the outdoors using a duct blower and a blower door.
• Close all windows and outside doors, all interior doors remain open.
• Install blower door in a configuration to pressurize the home. • Connect duct blower to air handler or air register.
• Pressurize duct system to 25 Pascals.
• Pressurize the house with blower door until the pressure difference between the house and duct work is 0.0 pascals.
• The Duct Blaster is set up and attached to the duct system (usually near the furnace).
• The blower door is turned on and the house is pressurized to 25 Pascals.
• The airflow indicated on the Duct Blaster's manometer (in cfm) quantifies duct leakage to the outdoors.
Describe complete combustion. - correct answer Complete combustion produces carbon dioxide, water vapor and heat.

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