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Installing a fireplace insert can get you more heat without replacing the whole fireplace and chimney. Other benefits include their convenience (you can turn them on and off with a simple flip of a switch), safety (most models have built-in sensors that will turn off the fireplace if they detect carbon monoxide), a modern aesthetic, and superior energy efficiency.

You should never block both the top and bottom of your chimney. Proper airflow is essential because the temperature inside the chimney will still fluctuate as your house warms and cools. Moisture can build up without ventilation, leading to dampness in your walls over time. Blocking the top prevents debris and animals from entering, but the chimney still needs air circulation to avoid condensation issues. Allowing the chimney to breathe maintains the health of your home and prevents long-term damage.

A well-constructed and regularly maintained brick chimney can last 50 to 100 years, potentially spanning multiple generations of homeowners. The exact lifespan depends on the quality of construction, materials, local environment, and maintenance. In contrast, a metal chimney typically lasts 15 to 20 years. While the main structure is durable, individual components have shorter lifespans and require more frequent replacement. For example, mortar may need repointing every 20 to 30 years, chimney crowns last 50 to 75 years, and liners can last anywhere from 15 to 50 years depending on the material (e.g., stainless steel vs. cast-in-place).

In most cases, you should not put a TV on a fireplace mantel. The minimum width required to put a TV safely on a shelf or mantel is 10 inches, but pre-made mantels are usually too shallow, averaging at only seven inches deep. If you do choose to place a TV above a mantel, it should be mounted to the wall. However, do so cautiously as heat radiating from the fireplace could potentially cause damage to electronics.