Plugged _____ on warm air heating and ventilating systems limit the air flow, and result in insufficient heating and fuel wastage.
a. Filters
b. Heat exchangers
c. Diverters
d. Univents
e. Convectors
Answer: A
Plugged _____ on warm air heating and ventilating systems limit the air flow, and result in insufficient heating and fuel wastage.
a. Filters
b. Heat exchangers
c. Diverters
d. Univents
e. Convectors
Answer: A