Keep the Feature – Lose the Leak
In previous posts, we established a few things:
- Fireplaces look great
- They’re not exactly energy all-stars
- And sometimes… they’re quietly working against your heating system
But this isn’t a “never use your fireplace again” speech.
It’s about using it
smarter.
Start With the Simplest Fix: Close the Damper
Let’s begin with the obvious—because it’s often overlooked.
- Make sure the damper is fully closed when the fireplace isn’t in use
- Check it occasionally—it doesn’t always seal as tightly as you think
A damper is better than nothing…
…but it’s not an airtight solution.
Think of it more like “slowing the leak” than “stopping it.”
Take It a Step Further: Seal the Chimney When Not in Use
If you rarely use your fireplace, this is where real improvement happens.
Options include:
- Chimney balloons or plugs
- Top-sealing dampers (installed at the chimney cap)
These:
- Block airflow more effectively
- Reduce heat loss significantly
- Help keep cold air from dropping into the house
Just one rule:
If you seal it—make sure you remove it before using the fireplace.
(That’s a bad day otherwise.)
Glass Doors: Helpful, With Limits
Glass doors can:
- Reduce the amount of warm air pulled out of the house
- Improve safety (sparks, pets, kids)
But they:
- Don’t make a fireplace “efficient”
- Don’t fully stop air movement
Good upgrade—just don’t expect miracles.
If You Use It Often, Use It Wisely
For those who actually burn wood regularly:
- Burn dry, seasoned wood
- Use smaller, controlled fires
- Close the damper once the fire is completely out
- Avoid leaving it open overnight “just in case”
And remember:
Most traditional fireplaces still lose more heat than they produce.
(Yes… even when they feel warm sitting right in front of them.)
Consider an Upgrade (If It’s More Than Occasional Use)
If the fireplace is part of your routine, not just a holiday guest appearance:
You might look at:
- Fireplace inserts
- Sealed combustion units
These:
- Burn more efficiently
- Reduce air loss
- Actually contribute to heating the space
Now you’re moving from “ambiance” to “appliance.”
Or… Rethink the Role Entirely
If the fireplace isn’t used much:
- Seal it properly
- Turn it into a design feature
Think:
- Artwork
- Plants
- Decorative logs or candles
You keep the character… without the energy penalty.
The Bottom Line
A fireplace doesn’t have to be a problem.
But left alone, it often is.
The goal isn’t to get rid of it—
it’s to decide what role it plays in your home.
- Occasional use → manage the airflow
- Frequent use → improve the system
- No use → seal it and enjoy the look
Final Thought
Fireplaces are great at creating atmosphere.
Just don’t let them quietly heat the outdoors while you’re paying the bill.
Thinking about a gas fireplace? Check out the pros and cons in
this post.
