How does a flue damper work?

A chimney damper is a manual mechanism that controls airflow and smoke through the chimney flue. A closed damper acts as a seal that keeps the exterior air out and the interior air in. In contrast, an open one sends carbon-monoxide-rich exhaust through the flue and also assists in starting and controlling a fire.

Should flue 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.

How does a damper operate?

Fire dampers respond to heat, when the temperature reaches a set point the damper slams shut. Smoke dampers respond to the detection of smoke, and close automatically. They can also be activated remotely. They resist the passage of smoke, toxic gases and air through a fire barrier.

When should I adjust my fireplace damper?

If a lot of smoke it staying in the room, it is a sign that you need to open the damper more. Make sure to close the damper whenever your fireplace is not in use! Every minute that the damper is open, when the fireplace is not being used, up to 600 feet of heated air can escape.

How do I know if my fireplace damper is open?

Conduct a visual check.

Lean in under your chimney just outside of your wood burning stove. You should find a metal device just within the chimney or flue opening. The damper is open if you can see through the damper up to your chimney. If you only see a metal plate, the damper is in a closed position.

Is a damper the same as a flue?

A fireplace flue and a fireplace damper are not the same thing. 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.

How do I make sure the flue is open?

Before lighting a fire, you can tell if the damper is open by placing your hand into the fireplace. If you feel a draft coming down the chimney, it is a good indicator that the damper is open. If you don't feel any cold air coming down the chimney, it means that the damper is closed.

Should flue be fully open?

Even if your pilot light is not lit, there is the danger that someone might forget to open the damper when using the gas fireplace. Gas fireplaces emit a copious amount of carbon monoxide, so they must always have an open vent.

How do you adjust the flue damper?

How to use the fireplace damper to control the fire

1. Open the fireplace damper all the way when starting a fire.
2. Let the fire burn for a few minutes then adjust the damper so that it is partially closed (about half way) to see how it affects the fire.

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.

What is the difference between smoke dampers and fire dampers?

A fire damper closes once the duct temperature reaches a high enough level to melt a fusible link. A smoke damper closes upon the detection of smoke.

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 use a fireplace without a damper?

Whether your fireplace is gas or wood-burning, if it was built with a pre-fabricated insert, then it almost certainly has 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.

When should I close the damper on my wood stove?

If you're burning wood in your stove, you should make sure that the damper is open. If you close the stove's damper when you have a fire burning you could be putting yourself at risk, not only of fire hazards but also of carbon monoxide poisoning. When you have extinguished the fire, you can close the stove's damper.

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.

Can 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.

How do you tell if your chimney is blocked?

Signs of a blocked chimney and its flue liner include:

1. An excessive smell of smoke during a fire.
2. A white residue on the walls of the flue liner.
3. Water leakage.
4. Debris falling towards the base of the fireplace.

Can I go to bed with a fire in the fireplace?

You should never go to sleep while a fire is in the fireplace. It may seem safe—after all, the fire is small and controlled behind a metal grate.

How long after fire can you close flue?

A fireplace damper should always be kept open while the fire is burning. Furthermore, keep the damper open until all the embers are done burning. Smoke and dangerous carbon monoxide can enter the house. Once the ember bed is completely out, close the damper.

How do I keep my log burner going all night?

You can't just throw any old wood on your fire and expect it to burn all night. The idea is to stack hard wooden logs of a regular size carefully inside the stove. If there are as few air gaps as possible, the fire will keep going for much longer than if you fill it with unevenly shaped pieces of rough wood.

How are fire dampers controlled?

Smoke dampers are operated by either a factory-installed elec- tric or a pneumatic actuator. They are controlled by smoke detectors and/or fire alarms. Smoke dampers are qualified under UL Standard 555S, UL Standard for Safety for Smoke Dampers, and have two general applications: 1.

Do you need a fire damper in a 30 minute wall?

Where a duct passes through a fire hazard room, but does not serve it, fire dampers are not required but the duct must have fire resistance of 30 minutes in respect to integrity and insulation.