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.

Deciding whether to buy a prebuilt fireplace kit or build one from scratch comes down to aesthetics, available space, and budget. Many homeowners like the convenience and lower cost of prebuilt options—around $1,500—versus the involved planning and construction of a larger fireplace. Another bonus: you can usually move prebuilt units. Custom projects are more common when homeowners have access to a larger budget and more area in the yard to place the fireplace.

If your gas fireplace is vented through a chimney, a chimney cap is highly recommended. While not all gas fireplaces require a traditional chimney, for those that use one, a cap provides several key benefits. It prevents rain, debris, and animals from entering the chimney, which can cause blockages or damage. A cap also helps prevent downdrafts that could push harmful gases like carbon monoxide back into your home. When installing a cap, ensure it is appropriate for a gas fireplace and does not restrict proper ventilation.

Even though ventless fireplaces are safe to use overall, you shouldn’t let them run for more than a few hours per day. It’s also important to make sure the room with the fireplace is well-ventilated. If not, the water vapor from the fire could increase the humidity levels in your home, potentially resulting in mold growth.