Problems With Your Damper? We Have Chimney Damper Repair & Replacement Options

A chimney damper is a device installed in the opening of your chimney – either at the top of the flue or the throat of the chimney – that helps to regulate and manage the flow of hot air and smoke. Homeowners can prevent home heat from escaping during the winter season by closing it up, or ensure heated smoke doesn’t enter back into the home when a fire is lit by opening it wide. Additionally, dampers help to keep cold drafts and precipitation from entering through the flue.

Is Your Chimney Damper Damaged?

When considering these benefits, it should be noted that chimney dampers should be frequently inspected to ensure optimum performance. Damaged or worn-out parts can inadvertently allow flames, sparks, and other residues to enter into your home, causing potentially dangerous conditions.

While a chimney damper is typically made of metal and helps to regulate airflow, it can also be easily damaged as these components do not last forever. Dampers are one of the few things that move in a chimney system and they can fail due to both regular wear and tear or lack of use.

Another thing we see is improper installation. A typical throat damper runs on a rail, and if it’s not lined up just right, it can come off the track or can sit slightly off track. Improper installation may mean that the damper isn’t correctly fitted in the flue, which will result in drafts and other issues.

Chimney dampers can also rust over time if they are exposed to water causing them to not be repairable. With all this in mind, it’s important for homeowners to make sure the damper operates correctly by testing its ability to easily open and close several times throughout the year – this helps deter rusting or sticking due to disuse.

What Types of Chimney Dampers Are There?

There are two types of chimney dampers to consider, depending on your fireplace and fuel.

Traditional Throat Dampers

A chimney throat damper is located just above the firebox and operates like a valve, opening to allow hot smoke and gases to escape and closing to prevent cold outside air from being drawn into the house. They are made of durable materials such as stainless steel and cast iron, and are designed to withstand extreme temperatures.

A properly functioning chimney throat damper aids in maintaining warm air inside and reducing energy costs for homeowners. No matter what type of home heating system is used, it’s recommended for homeowner safety and efficiency that a chimney throat damper be inspected annually.

Top-Sealing Dampers

These dampers, also known as lock-top dampers, help homeowners keep their homes warm and energy costs low. They’re designed to fit at the top of a chimney flue, closing it off tightly when not in use and preventing hot air from escaping through the chimney.

The lock-top damper will also prevent cold air and critters from entering your home via the chimney opening, saving you money on heating bills and keeping wildlife out of the living space. Additionally, a chimney lock-top damper acts as a cap during severe weather, like wind or rainstorms, to protect your home against dangerous elements. With one simple installation, you can protect your family and save money year-round.

Call On Our Certified Techs

No matter which damper you decide on, having a Chimney Safety Institute of America (CSIA)-certified technician install it is a must for ensuring the highest level of efficiency and safety. If you live in the Montgomery County area, our experienced team is here to help.

Call Chimney Masters at 301-972-9158 or schedule an appointment here on the website to get started.


Sometimes you may need masonry repairs to fix your chimney problems. No worries…we are qualified and ready to help with all your chimney repair needs.