Indoor air quality, Why and How to fix

2. Which of the following is NOT mentioned in the video as a type of compound that impacts indoor air quality?

• Radon
• Mold
• Carbon dioxide
• Asbestos

1. According to the video, what is the first line of defense in improving indoor air quality?

• Eliminate or reduce the source of pollutants
• Ignore the presence of mold
• Open windows during rush hour traffic
• Increase the use of scented candles

3. What is the purpose of an energy recovery ventilator (ERV) system?

• The purpose of an energy recovery ventilator (ERV) system is to improve indoor air quality, reduce heating and cooling costs, and recover energy from exchanged air.
• To introduce pollutants into the indoor air
• To decrease the efficiency of heating and cooling systems
• To increase humidity levels in the indoor environment

4. The video states that the EPA recommends homes with radon levels above what amount be mitigated?

• 4 pCi/L
• 8 pCi/L
• 6 pCi/L
• 2 pCi/L

. According to the video, what is the purpose of a dehumidifier?

• To reduce humidity levels in the air
• To generate electricity
• To purify water
• To increase humidity levels in the air