A chimney damper prevents conditioned (warmed or cooled) house air from escaping through the flue when you're not using the fireplace. You need to open the damper when you start a fire to allow for proper airflow and let the smoke out.
Do all chimneys have a damper?
Not all chimneys or flues have a damper. Open fireplaces can usually be found with damper located within the upper part of the firebox. It's common to find a damper as part of an open fireplace, but in some cases there may be no damper at all.
What is the difference between a damper and flue?
The flue is the opening or passageway that the smoke or other combustible gas from the fire exits the house. The damper is a mechanism that opens or closes access to the flue.
Should chimney damper be open or closed?
The damper should always be fully open before lighting a fire and when the fireplace is in use. Close it when it's not it use. Operating the fireplace with the damper partially closed will not generate more heat. Instead, blocking the passage through the flue will result in smoke entering the home.
What is the purpose of a damper?
A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control.
20 related questions foundHow important is a chimney damper?
Dampers keep cold air out. When your chimney is not in use, the outside air can easily work its way in by coming down through the chimney. This makes your home cold and uncomfortable, and it causes your heating bills to increase fast.
Should I close my chimney flue in the summer?
Even if you have a chimney cap, it is a good idea to keep the damper closed in the summer. Chimney caps can become damaged creating a pathway for rainwater or pests to get into your chimney. Closing the damper will ensure that they can't get into your home through the fireplace.
Is it OK to leave the flue open overnight?
The smoke from burning wood contains carbon monoxide, so in order to prevent this toxic byproduct from entering your home, it is important to leave the flue open overnight. This enables a draft to carry the compound out into the atmosphere, instead of sinking down the chimney and saturating the room.
Can you leave damper open overnight?
Leave the damper open overnight. Yes, you will lose some heat up the flue, but you will save the occupants of the home from poisoning by colorless, odorless carbon monoxide. In the morning, stir the embers and check them for any hot spots.
Should I close the damper at night?
A fireplace damper should always be kept open while the fire is burning. Furthermore, keep the damper open until all the embers are completely out; since smoke and dangerous carbon monoxide can enter the house. Once the ember bed is entirely out, close the damper.
How much does it cost to replace a chimney damper?
$180, Installed
The average cost to repair or replace the damper in your fireplace or chimney is around $60 for damper door replacement only, with DIY installation. If the frame needs to be replaced as well, plan on $350-$400 and a Pro to do the job.
What if my fireplace doesn't have a damper?
And while older wood-burning fireplaces can function safely without a damper (gas fireplaces cannot), a chimney without a damper is just a gaping hole in the roof of your house. It's a gateway for frigid air to enter and for heated air to escape in the winter.
Where is the damper in a fireplace?
Fireplace dampers are a type of damper usually located at the base of the chimney and around its throat just above the firebox. Flue dampers, which you can find at the base of a flue. Chimney cap dampers, which are typically located at the top of a chimney.
Is a damper necessary?
Newer models of wood stove don't typically require a damper. A damper was traditionally used on older, less efficient, models of stove to help reduce the flow of air leaving the firebox. Certified modern stoves meet stringent regulations and typically won't need a damper to perform well.
Should damper be open or closed in winter?
In most homes, dampers going to the upstairs are open in the summer and closed in the winter. By closing the dampers to the upstairs in the winter, it allows for the heat to rise naturally after first being introduced into the lower levels of the home.
Do chimney balloons work?
How does it work? Chimneys act like giant hoovers, sucking air out of your home. This causes cold air to be pulled in from other gaps, causing the cold draughts we notice. The Chimney Balloon effectively blocks the chimney, stopping warm air from escaping and stopping cold air from getting in.
How can I tell if my chimney flue is open?
Feeling the breeze is another method you can use to know whether you have an open or closed flue. Locate your hand inside the fireplace and wait to notice if you can feel the air flowing. When the flue is open, air will flow down the chimney.
Should I close the glass doors on my fireplace?
The doors should always be fully open or fully closed. Glass doors should be fully open when starting a fire and when the fire is burning strongly. The glass doors should be closed as the fire dies down to minimize the amount of room air going up the fireplace chimney.
Can you go to bed with embers in the fireplace?
You should never leave a fireplace burning overnight, regardless of the source. Before you go to sleep, be sure to put out the fire and let the materials cool down. Unattended fire is a hazard, and even the slightest gust of wind can reignite it or blow embers to a nearby flammable material.
Will a chimney fire burn itself out?
It is not safe to assume that a chimney fire will burn itself out. Though it is possible that it will eventually burn off and end, it is much better to call 9-1-1 if you have a chimney fire. A chimney fire can potentially spread to other parts of your home and risk the lives of the people inside.
What happens if you leave damper open?
Leaving your damper open during the summer forces your air conditioner to work harder in order to compensate for the incoming warm air. This causes an uneccessary spike in your utility bills, and if your HVAC system is old and overworked, might even force you to pay for a repair or replacement.
Why do people close off fireplace?
Poor air quality and the health risks (nausea, irritation, headaches, allergies, fatigue, and other illnesses) are just some of the dangers of having an operable chimney. Blocking it off permanently increases your home safety overall against other issues such as mold, fire, rodents, and more.
Why does smoke billow out of fireplace?
Indoor air pressure affects this air flow. The air inside your home pushes air up the chimney, like a vacuum. Good draft conditions allow vented smoke to travel up the chimney quickly, while poor draft conditions can cause smoke to billow back out into your home instead.
How do I get more heat from my fireplace?
Fortunately, there are several things homeowners can do to maximize fireplace heating efficiency:
- Install a Glass Fireplace Door. Installing a fireplace door is an effective and inexpensive solution to get more heat out of your fireplace. ...
- Use a Fireback. ...
- Upgrade Your Fireplace. ...
- Use the Damper to Turn Up the Heat.
