What happens next in this paragraph?

How to make a fireplace more energy efficient
Install a top-sealing chimney damper.
Top-sealing dampers replace the fireplace throat damper and are installed at the top of the chimney. The top-sealing damper has a seal that acts like a storm door, keeping the expensive conditioned air inside the house and the outside air-outside.

[1]. Check the quality of the damper accurately to ensure its old-fashioned texture. Chimney damper versions range from cheap to premade fireplace damper.;
[2]. Most water-based fireplaces end with a top-sealing damper damper. This damper exists because the chimney chimney damper is dry enough to withstand collecting ashes and the chimney damper cannot insulate the poisonous air inside.;
[3]. If you have trouble shooting fire, you could use your fireplace damper to replace the chimney damper's damper. A top-sealing damper damper can be found at most home improvement stores.;
[4]. This principle works year-round, whether you're heating or cooling your house. This product can be purchased online and is easily installed by either a homeowner or a handyman.;
[4].