What Can I Do About Cold Air Coming from My Fireplace?

Cold & Drafty Fireplace Repair

Fireplaces and chimneys are open systems designed to provide a clear drafting path for smoke and toxins to exit into the outside air. However, that creates a problem: this system heats your home, but it also creates a conduit for cold air to enter. 

Fortunately, this all-too-common problem has a number of solutions — some simple, some a little more involved. Let’s start by choosing one of two options:

  • Prevent the air from entering your home
  • Create more heat from your fireplace

In some cases you can do both, as we’ll see below.

Keep cold air out


The fireplace damper is your first line of defense against cold air infiltrating your home when a fire isn’t burning. Dampers should close tightly and block all the air above them. If your damper is warped, rusted or otherwise damaged, cold air in the upper flue is going to get past it.

Along with the common throat damper located just above the firebox, some homeowners add a top-sealing damper at the top of the chimney to double their protection.

Chimney balloon/plug

Another great way to block cold air is with a chimney balloon or plug. These devices are placed above the throat damper and inflated to completely block air from coming down into your fireplace. Balloons are designed to be used only when a fire isn’t burning. Should you light a fire with an inflated balloon, it will automatically deflate.

Fireplace Doors

Finally, a set of sturdy fireplace doors will go a long way in keeping cold air out of your home. Often made of decorative glass, fireplace doors not only block air drafts when the fireplace isn’t in use, they also look beautiful.

Beautiful Gas Fireplace Insert Installation In Concord, NHCreate More Efficient Heat

There are two excellent ways to increase the temperature inside your room/home and eliminate cold air drafts all together.

Install a powerful fireplace insert

Fireplace inserts come factory-made and properly sized to fit into the firebox of your existing masonry fireplace. Inserts are heavily insulated and operate with their own efficient venting system. Heat-efficiency ratings of 85% and higher are common with inserts. This means that the majority of the heat the unit produces will be used as heat for your home. Compare this with a rating of 10% or 20% for most open masonry fireplaces.

Zero-clearance fireplace

Zero-clearance fireplaces are so-named because they’re powerfully insulated and can be safely installed close to wallboards, flooring and insulation in virtually any wall in your home. Heat-efficiency ratings often go well above 80%. They have their own vent pipe, so no chimney is necessary, and, like inserts, they can run on wood, gas or pellets.

Either a fireplace insert or a ZC fireplace will bring significantly more heat to your home than a traditional masonry fireplace and both appliances will not be anywhere near as drafty as a masonry unit.

Ready to upgrade? Contact Black Moose Chimney today! We can help with the installation of all fireplace or insert components, and we also offer a full range of chimney services, including inspections, sweeps, repairs and more! We want you to stay warm, and we know exactly how to make that happen. Call us today at (603) 525-7905.

First Thing

John RantaJohn Ranta
17:01 22 Mar 24
They arrived on time, worked quickly and showed me the results. Prfessional throughout. jr
william greenwilliam green
23:21 14 Mar 24
Really helped me out can't say enough good things highly recommend!!!! The young man that came to my home was very knowledgeable and friendly great attitude all around answered all my questions and left me stress free best of all left no mess.🤙🏻🤙🏻
Michael Dell'OrtoMichael Dell'Orto
18:39 14 Mar 24
Jaime ConleyJaime Conley
17:13 14 Mar 24
Sarah GilliattSarah Gilliatt
01:46 13 Mar 24
A very thorough and careful job done! Thank you.
Larry CookLarry Cook
15:11 07 Mar 24
I wanted to give 5 stars but they are very busy which meant I had a good wait for both the inspection/cleaning, then for a quote on repairs and then for the repairs. Their prices seemed a little high to me but I have nothing to compare with as they were highly recommended by someone I trust and other companies had plenty of negatives reviews which kept me from getting additional quotes. I am happy with the work and they promptly returned to fix a mistake that had been made. Chris the inspector, Jennifer in the office, and Alex and his repair crew were all pleasant and took the time to answer all of my questions. Alex and his crew even took their shoes off (it was winter) before entering my house without even being asked! So if you are not in a rush and want to ensure you chimney is as safe as possible then I think you'll be happy with Black Moose.
Rebecca DeFuscoRebecca DeFusco
22:35 21 Feb 24
After a recent sweep of our chimney, it was discovered that our flue tiles were cracked. Black Moose techs were hard working, detail oriented and professional! Nice jobs guys! See you next year for my cleaning!
Karen CKaren C
14:52 14 Feb 24
Excellent I highly recommend Black Moose Chimney and Stove; Kelly and Liam are awesome, they did a great job. Extremely professional, arrived early, went through everything with a fine tooth comb ensuring pellet stove was thoroughly cleaned. They also were respectful of my home, conscientious and cleaned up after themselves. Made sure stove worked prior to leaving and told me to call promptly if anything came up afterward. Will definitely use them again.
Denise ClarkDenise Clark
16:32 31 Jan 24
We've had Black Moose clean our chimney for a number of years.But recently, we had an emergency situation at our home involving our chimney & oil furnace flue, which was caked full of soot from a malfunctioning furnace. They came & cleaned out both flues in no time, even going up on the roof with snow on it! They cleaned up after their work in the interior rooms where the oil furnace and the woodstove are located. Great work. Reasonable prices. Very nice people. You can't go wrong with Black Moose.
Joe GJoe G
18:30 24 Jan 24
Goods: The technicians know their business, very efficient in cleaning/inspection along with cleaning up after the 'dirty work'.Others: Communications could be more effective. Despite early coordination about scope of work (multiple flues within same chimney) the estimate provided did not reflect this and the final invoice was significantly more than the estimate provided.Quote for follow-on chimney relining was significantly more than that offered by other companies in the area (and far more than neighbors experienced for similar work accomplished by other companies)