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Creating a more efficient fireplace by repairing or replacing your chimney damper.

Chimney Damper Repair

What is a Damper?

In a chimney flue, a damper closes off the fireplace from letting hot or cold air in or out of the home. It remains closed and hopefully sealed when the fireplace is not in use. When you first start a fire, you open the damper all the way. The chimney and flue will heat up and a natural convection process will take over. At this point, advanced firemakers might slightly close the flue damper to minimize heat escape.

Throat Damper:

This traditional type of damper is found in brick and stone fireplaces just above the firebox. There is a iron or steel frame with a plate that opens by pushing a handle or turning a knob. It closes but not usually tightly.

Some throat dampers are either open or closed, while others can be adjusted once a fire is started.

Top Sealing Damper:

Technology improvements have led to a range of more improved construction products for fireplaces. By placing the damper at the top of the chimney, it serves multiple purposes. It still has the same effects as the throat damper for fire starting and maintaining, but it also has additional benefits including keeping critters and water out. Another benefit is that starting the fire might be easier because the air circulating in the open flue is a bit warmer.

The throat damper can be easily controlled with a handle and it has a rubber seal around it, creating a better seal and therefore better temperature control and heat efficiency.

Should I Get My Damper Repaired?

If your damper is broken or needs repair, you have some options. You can repair it or you can implement some newer technology and get it replaced with a more energy efficient model.

Should I Replace My Damper?

If you have a throat damper that is open or closed only and you use your fireplace a lot, you might benefit from a top sealing model. It will decrease leaking energy out while the fireplace is not in use and it will help you control the heat when the fire is lit.

Valley Chimney Sweep is certified in top mounted damper installation. We can come out and advise you on the most efficient and economical model for your home.

Back To Services

“Valley Chimney has been servicing my home in Oswego, IL for three years now. The first year they recommended a heat reflector and different wood grill. What a difference that made! Now we actually get some heat in the room instead of just the ambiance! They also fixed some issues with brick and helped me save a few dollars by telling me how to remove the gas line correctly to convert to wood only. If you want a pro servicing your chimney, these are the guys to call.”

Oswego, IL

8940 D Route 34
Yorkville, IL 60560

(630) 553-5995


Service over 40,000 clients across the western suburbs of Chicago