How is air leakage through the house's shell determined?
What will be an ideal response?
Air leakage through the house's shell will be determined by the pressure difference between the inside and outside of the house shell, and the size of the holes or cracks where the air is leaking.
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Why do most humidifiers require annual cleaning and media replacement?
A) The media is slowly dissolved by the water used in the humidifier B) A chemical reaction between the media and the water causes a crusty white buildup C) Minerals in the water are left behind in the sump and media D) The water attracts dirt from the air
Normally, a split AC system that uses a fixed metering device can safely operate at temperatures:
A) Above 65°F. B) Above 90°F. C) Above 70°F. D) Above 50°F.
What are the signs of Dippity Pig syndrome?
What will be an ideal response?
Lines may be marked with a soapstone, metal marker, a(n) ____, scratched with a metal scribe, or punched with a center punch.
A. chalk line B. hidden line C. in-line D. vertical line