Question

Heat from burning fuel warms the walls of the firebox section of the furnace in

A. a hot-water heating system.
B. a hot-air heating system.
C. a compressor compartment.
D. an evaporation system.

Answer 1

Heat from burning fuel warms the walls of the firebox section of the furnace in

A. a hot-water heating system.

B. a hot-air heating system.

C. a compressor compartment.

D. an evaporation system.