Fireplace damper replacement FAQs you must know answers to

If you have a fireplace at home, you’d have noticed a damper – a small door for your chimney that releases smoke and gases while keeping out rain, debris, and animals. If the damper develops cracks due to rapid heating and cooling, is damaged, or is rusted, you will need to care of the fireplace damper replacement ASAP. It’s vital that you keep this fireplace component in working condition.

Here, we have curated some frequently asked questions about fireplace damper installation and replacement so that you have no trouble making your home energy-efficient and safe. 

Read more: How to keep your home warm without electricity

What is a fireplace damper?

A fireplace damper, typically made of heat-resistant materials, acts as a safety guard for your chimney. It keeps your home warm by sealing the chimney when you’re not using the fireplace. And, also helps send the smoke out through the chimney.

What does a fireplace damper do?

When open, a damper allows smoke and gases to escape when you light a fire. When closed, it prevents cold air from coming in. Keep in mind that an open damper can also pull out heated or air-conditioned air due to the updraft in the chimney. However, be cautious – keeping a damper closed with a lit fire can lead to smoke and fumes entering your home.

How do you replace your fireplace damper?

Fireplace damper replacement is a careful process that involves the following steps:

• Do a thorough inspection of the condition of your fireplace damper. Look for signs of damage, rust, or any inefficiency in its operation.
• Collect the necessary tools and replacement damper based on your fireplace type.
• Take safety precautions. Ensure the fireplace is cool before starting. Use safety gloves and goggles.
• Turn off the gas supply or disconnect any electrical connections to the fireplace.
• Remove the old damper following manufacturer guidelines. This may involve loosening screws or other fasteners.
• Wiggle the damaged damper off the rod and out of the chimney.
• Clean the fireplace area, removing any debris or buildup. Ensure the chimney is clear.
• Install the new damper and secure it in place with screws.
• Test the damper by opening and closing it to confirm proper functionality. Check for any leaks or gaps when closed.
• Reconnect the gas or power supply following safety protocols.
• Conduct a final chimney inspection to ensure the damper is working effectively.

Read more on chimney cleaning here. 

Can I replace the fireplace damper myself?

While replacing a fireplace damper is possible for many enthusiastic DIY homeowners, hiring professional help is recommended for a proper and safe fireplace damper replacement. Keep in mind that in case of a chimney cap damper, you will need to climb up on your roof with a safety harness. 

How do I inspect my fireplace damper?

Inspecting your fireplace damper involves visually checking for signs of damage, rust, or wear. Ensure it opens and closes smoothly and seals tightly when closed. If you’re unsure or notice any issues, consider consulting a professional for a more thorough inspection.

Need help in organizing your home maintenance schedule? With My Maintenance, you can add all your upkeep tasks such as fireplace inspection, chimney cleaning, and roof inspection to a personalized calendar and get timely reminders to complete them. 

How long does a damper last?

The lifespan of dampers varies based on the type and usage conditions. Generally, a damper lasts 15 to 20 years with regular cleaning and maintenance. A properly installed and maintained damper will help prevent water, debris, and animals from entering your chimney for years.

What are the types of fireplace dampers?

Traditional wood or gas fireplaces have either of these dampers: throat dampers or chimney cap dampers aka top-sealing dampers.

• Throat dampers: Located just above the firebox, these dampers are operated manually and control the airflow by opening or closing the throat of the chimney.
• Top-sealing dampers: These dampers sit at the top of the chimney. The chimney cap dampers seal off the chimney opening. They are often operated by a cable or chain and can provide a better seal than throat dampers, reducing energy loss when the fireplace is not in use.

How to make sure the fireplace damper is open when the fire is lit?

If you’re not sure which is the open or closed position on your damper hardware, try the following steps:

• Look inside the chimney with a flashlight. A throat damper’s open position is easy to see.
• Check for a draft by placing your hand in the firebox. If you feel the air moving, it means the damper is open.
• Light a small piece of paper on fire under the chimney. The damper is open if you see the flame and smoke moving upwards towards the chimney.
• If you have a chimney cap damper, go outside and check. 

How much does it cost to replace a damper in a fireplace?

The cost to replace a damper can vary based on factors such as the type of damper and the specific model. On average, the replacement cost for a fireplace damper can range from $50 for a simple damper plate to $250 for a cast-iron damper with an opening mechanism. Specialty dampers, such as chimney cap dampers, may cost between $200 and $300, excluding additional expenses for accessories such as a screened chimney cap ($90 to $120) and labor costs. 

Last thoughts

A damper helps control the airflow in your fireplace. This upgrade enhances energy efficiency, allowing better control over ventilation and preventing heat loss. It’s a practical and safe solution for optimizing your fireplace’s performance, ensuring a warmer and more comfortable home during the colder months.

Written by Ramona Sinha. January 3, 2024

Ramona is the Senior Content Writer for Kukun. This experienced blogger uses simple and succinct words to decipher the complex phenomenon called life. She has written articles covering a broad range of topics, such as real estate, lending and mortgage, finance, business, taxation, home designs, home improvement projects, decor concepts, and more. An avid traveler, she’s a digital nomad at heart and an animal lover from the depth of her soul.