Diagnostics & Performance Testing Flashcards
6 cards from real HERS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Diagnostics & Performance Testing flashcards as text
What does a blower door test measure?
Answer: Air leakage in the building envelope
A blower door test quantifies the air leakage in a home, helping assess its airtightness and energy efficiency.
Which device is used during duct leakage testing?
Answer: Duct blaster
A duct blaster is specifically designed to pressurize and measure leakage in duct systems.
Why is it important to conduct combustion safety testing?
Answer: To verify safe venting of combustion gases
Combustion safety testing ensures fuel-burning appliances are venting properly and not posing carbon monoxide risks.
What measurement is typically used to express air leakage during a blower door test?
Answer: CFM50
CFM50 stands for Cubic Feet per Minute at 50 Pascals of pressure, which is the standard for blower door tests.
Which reading on a manometer indicates a significant pressure difference during testing?
Answer: 50.0 Pa
A large pressure difference indicates leaks or issues in airflow, which may require further inspection or sealing.
What is the purpose of pressure diagnostics in home performance testing?
Answer: To locate air leakage paths and pressure imbalances
Pressure diagnostics help identify air movement pathways and imbalances that may affect energy performance.