04/14/2026
How a high-efficiency masonry fireplace controls heat and smoke flow
This diagram shows how hot gases move through a structured path inside a brick fireplace system:
• Fuel burns in the lower chamber, producing hot gases that rise naturally
• Instead of going straight up, the gases are redirected through a series of internal channels
• These channels slow down the flow, allowing heat to transfer into the surrounding brick
• The warmed brick stores heat and gradually releases it into the room over time
• After most of the heat is captured, the cooler gases exit safely through the top outlet
This design improves heating efficiency and comfort by maximizing heat retention while maintaining proper smoke ventilation.