Respuesta :
Answer:
Furnace
Explanation:
Furnace typically uses a propane or natural has heat exchanger. High efficiency units will vent with PVC (condensing flue gas), lower efficiency in metal flue pipe.
Answer:
Furnace
Explanation:
Furnace typically uses a propane or natural has heat exchanger. High efficiency units will vent with PVC (condensing flue gas), lower efficiency in metal flue pipe.