Air Filtration, Circulation, and Noise

Question 1

How are filters tested for efficiency?

Answer 1

Dust spot, dust weight arrestance, and fractional efficiency tests.

Question 2

Fibrous media filters will remove particles as small as 0.3 microns

Answer 2

False, they will only remove partices as small as 10 microns

Question 3

Electronic air cleaners are made of which of the following?

Answer 3

Pre-filter, ionizing wires and collector plates

Question 4

What will happen to the skin when air moves over it?

Answer 4

It will feel cooler. “wind chill effect”

Question 5

When there is no air movement in a large room the air will _____________ and cause the _______________.

Answer 5

stratify, air to become stagnant and stale.

Question 6

Noise can have effects on you by causing

Answer 6

Annoyances, headaches, high stress levels.

Question 7

Noise levels below 70dB will:

Answer 7

have no effect on hearing loss at all

Question 8

Noise generated in the HVAC system should be of no concern

Answer 8

False, noise should be troubleshooted and fixed right away, as it can cause system problems and annoyance or uncomfort to the homeowner.

Question 9

Exposure to indoor air pollutants is ________ times greater than outdoor pollutants.

Answer 9

100.