If the smoke shelf is not built properly and kept clean, the falling cold air can force the smoke and gas into the ______.

Question

Quizplus · Accepted Answer

If the smoke shelf is not constructed correctly or maintained clean, it can lead to a situation where the descending cold air pushes the smoke and gas back into the firebox, rather than allowing it to exit through the chimney as intended. This can cause smoke to spill into the room instead of being properly vented.

If the Smoke Shelf Is Not Built Properly and Kept