Action Guide

Put a Damper On It

Difficulty: Difficulty: 1 Expense: Expense: 1 Savings: 249 lbs CO2 / $23 Bookmark and Share

Close your fireplace damper to prevent heated air from escaping your home

Why You Should Do It

Leaving the damper open in your fireplace creates an express way for heated air to escape your home - heated air that you paid for!  Air lost through the fireplace can account for 19% of your heating bill, so remember to close the damper to prevent this costly energy waste.

What It Costs

If you have a damper, free!  If you don’t have a damper, the cost ranges from under $100 to over $250, depending on the size you need and the nature of the damper.

How to Do It

  1. Select “Add to My Challenge” and pledge to keep your fireplace damper closed.
  2. If you have a damper, go close it!
  3. Put a reminder note by the damper handle so you or your family don’t forget.
  4. If you don’t have a damper, measure your fireplace and visit your local hardware store for recommendations.
  5. If you will not be using your fireplace for an extended amount of time, like the spring or summer, consider plugging and sealing the flue completely.
  6. Congratulate yourself for saving energy and money, staying comfortable and making a difference for Minnesota!

Common Misconceptions

My fireplace didn’t come with a damper.  Does that mean that it isn’t supposed to have one?

No, you can definitely find a damper that will fit your chimney flue, or you can get a Chimney Pillow that will blow up to fit tightly in the flue.

Frequently Asked Questions

  • Q.

    What is a fireplace damper?

    A fireplace damper is a device that is simply like a door on a hinge.  You pull a string which will close the door of the damper, sealing your fireplace flue and preventing air loss.
  • Q.

    Where can I get a damper?

    You can get a damper delivered to your house by ordering it online or going to your local hardware store.  Just make sure to call ahead to see if they have the right type and size.  Measure your fireplace flue dimensions before you go or order.
  • Q.

    Are there different types of dampers?

    The best type of damper to get is at the fireplace level, but if it won’t fit or you don’t have one, there are also chimney top dampers or damper/cap combinations you can buy.  You may also want to look into purchasing a Chimney Balloon, which will completely seal your fireplace flue.

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