Most warm air heating furnaces are often equipped with a _____ to supply moisture to the air during the dry winter season.
a. Dehumidifier
b. Humidifier
c. Water sprayer
d. Steamer
e. Vaporizer
Answer: B
Most warm air heating furnaces are often equipped with a _____ to supply moisture to the air during the dry winter season.
a. Dehumidifier
b. Humidifier
c. Water sprayer
d. Steamer
e. Vaporizer
Answer: B