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Signs that your chimney may need to be replaced include visible damage like cracks in the structure, bricks, or mortar, as well as crumbling or flaking mortar and loose bricks. Leaks, dampness, discoloration, and efflorescence (a white, stain-like substance on the bricks) are also key indicators of water damage, which can compromise the chimney's safety. Addressing these problems is essential, as a chimney in this condition may be at risk of collapsing and causing major damage to your home. A full replacement costs about $10,000 on average, but can range from $3,100 to $15,400.

A chimney liner is held in place by a top plate and attached top clamp, both of which should be included in most chimney liner kits. The top plate seals to the top of the chimney flue and attaches directly to the liner. This not only holds the liner in place but supports its weight in the chimney.

A hearth often looks like a tile or brick floor that juts out from and surrounds your fireplace. A hearth can be made of stone, brick, ceramic, or any other fireproof material. Brick offers a classic and traditional vibe, whereas a hearth made of marble or ceramic may lean more toward modern aesthetics. The most common depth of a hearth is 20 inches.

While wood stove fans are effective for improving heat distribution, they rely on the stove reaching a certain temperature to operate efficiently. If the stove does not generate enough heat, the fan may not start or may not move air effectively. Additionally, like any fan, wood stove fans cannot cool a stove or reduce its heat output—they only redistribute existing warmth.