Different Types Of Chimney Throat Dampers

When it comes to keeping your fireplace safe, efficient, and easy to operate, your chimney damper plays a huge role. A damper regulates airflow, prevents downdrafts, and keeps heated air inside your home when the fireplace is not in use. But did you know there are several different types of chimney dampers, each with its own strengths and drawbacks?

At The Duke’s Chimney Sweeps in Maryland, we often get asked about the differences between poker dampers, rotary dampers, and pivot dampers. Let’s break them down so you know which damper type is best for your home.

---

1. Poker Damper

The poker damper is one of the oldest and simplest damper styles. It’s a cast-iron plate located in the throat of the fireplace, controlled with a long rod or “poker” that you push or pull to open and close.

Pros: Simple, durable, and traditional.

Cons: Often gets stuck with age, doesn’t seal tightly, and can let drafts or energy loss occur.

Best for: Older fireplaces that haven’t been upgraded.

---

2. Rotary Damper

A rotary damper uses a handle or knob that rotates a circular plate inside the flue. The plate can be adjusted incrementally, making it easy to control airflow.

Pros: Allows better control of draft, simple to use.

Cons: Can wear out over time, not as airtight as modern dampers.

Best for: Fireplaces where you want more control over the burn rate.

---

3. Pivot Damper

A pivot damper operates on a pivot rod, swinging open or closed when you push or pull a lever. It’s often found in mid-century and later fireplaces.

Pros: Easier to use than a poker damper, solid design.

Cons: Still not 100% airtight; prone to rust or warping.

Best for: Homeowners looking for convenience without major modifications

At The Duke’s Chimney Sweeps, we install and repair all types of dampers across Maryland, Baltimore County, Harford County, Cecil County, PG County, Howard County, and surrounding areas. Whether you need a quick repair or a full replacement, we’ll help you choose the damper that works best for your fireplace and lifestyle.