How do you open a chimney damper?

Asked By: Maudilia Mondego | Last Updated: 2nd April, 2020
Category: home and garden indoor environmental quality
4.7/5 (178 Views . 23 Votes)
If the chain is tightly attached to a hook, the damper is closed. To open it, take the chain off the hook and let it go. You should feel the chain spring up as the damper opens. After you've opened the damper, you should feel air coming down the chimney.

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Also know, how do you open a damper?

Using a flashlight, poke your head inside the fireplace to look up into the chimney. If you have a throat damper, you can tell if it is closed if you see a barrier above your head. If you can see up into the flue, the damper is open.

Likewise, do all chimneys have a damper? Every Fireplace has a chimney damper. This is a movable plate that sits above the fireplace before the flue. If you pull the lever toward you, generally that will open most of the dampers. When the damper is closed, it helps to keep heated air from going up the chimney.

Beside above, how do you open the damper on a wood burning fireplace?

How to Operate a Flue in a Wood Burning Fireplace

  1. Locate the flue lever before starting a fire. Some fireplaces have a lever while others will have pulley system consisting of two chains with rings on the end.
  2. Determine the position of the flue damper.
  3. Open the flue damper for a fire.
  4. Close the flue damper when there is no fire.

How far should damper be open?

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.

36 Related Question Answers Found

How do I know if my HVAC damper is open?

Put the damper into an open position and check the registers once again to see if the airflow starts. If the damper is closed and you are feeling low airflow, or none at all, it is most likely a bad damper. For the automatic control damper, turn your HVAC system on. Check for airflow in the registers.

How does a damper work?

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. In a chimney flue, a damper closes off the flue to keep the weather (and birds and other animals) out and warm or cool air in.

How do I open my air duct damper?

Locate the damper lever on each duct. Each metal lever is located on the side of the duct. Open each damper by moving its lever so it points in the direction the duct travels, not across it. With all the balancing dampers open, the air conditioning air flow isn't restricted.

What is the lever on the side of my fireplace for?

The lever on the side is probably a fresh air supply damper, so the fire pulls fresh air (unheated) from outside.

How do I fix a stuck fireplace damper?


Take a steel brush or a handheld whisk broom and clean the damper and the area around it. This typically requires laying on your back inside of the fireplace which is not comfortable. If the damper is stuck, take a penetrating oil like WD-40 and spray the handle and the hinge where it connects to the damper plate.

Should furnace damper be open or closed?

To adjust air flow for summer cooling, start by fully opening all second floor dampers. Next, partially close dampers to first floor rooms that are getting lots of cold air. You will find that closing the damper to 50% or turning the shaft to 45 degrees will only partially slow the air flow.

Which way is the flue open?

The controls used in dampers may vary. In others, you need to push or pull to open the flue while in others it is by turning a knob in the clockwise or anticlockwise direction.

How do I stop Draught coming down my chimney?

You can use a chimney balloon. A chimney balloon is essentially a balloon that you inflate in your chimney that creates a snug fit, thereby preventing hot air escaping up out of the chimney or cold air dropping down it, helping to prevent draughts in your home.

When should I close the damper on my fireplace?

Close Fireplace Damper When Fire Is Completely Out.
If necessary to keep the fire burning well and smoke-free, you may adjust the damper into a semi-open position. Shut the damper when the fire is completely, absolutely out. That means ashes are cool to the touch even when stirred.

How do you install a chimney damper?


How to Install a Sealtight Chimney Damper
  1. Step 1: Prepare the clay flue and damper by making certain the top of the flue liner is dry and clean.
  2. Step 2: Using the adhesive cap to open the tube, apply adhesive to the top of the flue liner all the way around the opening.
  3. Step 3: Let's head off the roof and down into the house to the fireplace.

How does a damper work in HVAC?

HVAC dampers work by being situated closer to the mouth of the distribution pipe and will push or hold air from that point as needed. The pressure in the pipe will then redistribute the airflow to whatever zone requires regulating at that time.

How long after a fire can I close the 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.

What does a flue damper do?

The damper, or flue damper, is a small device inside of the flue. It serves a few purposes, including regulation of air flow and protection against rain and pests. A properly functioning damper is essential to any flue.

When should you close the fireplace doors?

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. When burning gas logs in a wood burning fireplace, the glass doors should always be fully open.

How do you keep a wood stove burning all night?


How To Keep a Wood Stove Burning All Night
  1. Rake the charcoal towards the front of the wood stove.
  2. Place five to seven large logs in a tight formation behind the coals.
  3. Shut the door and enjoy.

Can you leave the door open on a wood burning stove?

Wood burning stoves are not designed to be used with the door open. You can use a wood burning stove with the door open but doing so will lose the control of the air flow into the stove, making it operate less efficiently and sending more heat up the chimney rather than out into the room.

What is the difference between a chimney flue and damper?

The flue is simply the open middle of the chimney that the smoke goes up. Dampers are sometimes miss-called flues or flutes, but they are something entirely different than the flue. A damper is intended to shut off- either fully or partially- the chimney flue.