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The flue itself is any metal tube through which ash, sparks, smoke, and gases are drawn up and away from the interior of your house. A chimney/fireplace system has a lot of parts, components and areas – and plenty of terminology to describe each. The chimney flue and fireplace damper sometimes are thought to be basically the same thing, since both have to do with drafting and venting a fireplace. Your damper is a plated device that sits above the firebox. Its function is to regulate the volume of air that travels through the fireplace/chimney system. When fully open, the damper allows for sufficient air to start fires easily and keep them burning aggressively. It also gives smoke and toxins such as dangerous carbon monoxide a pathway to exit the fireplace. When you aren’t using your fireplace, the damper should be tightly closed to prevent an unwanted exchange of air between your home and the outside world. A closed damper also keeps bugs, squirrels, birds and other critters out of your house. Damper issues You do! If you have any kind of combustion situation happening indoors—a fireplace, furnace, or wood stove—your damper becomes an important tool in containing and controlling that fire. It also seals the flue opening off from the outside when no fire is burning.
Do you have a problem with your damper or flue? A-1 Chimney Specialist of Winchester, TN, and Huntsville, AL, is ready to help. We provide licensed fireplace and chimney inspections, chimney sweeping and all types of chimney repairs to keep your home and family safe. Based on installing a new A-rated condensing boiler in England, Scotland and Wales with a programmer, room thermostat and thermostatic radiator controls (TRVs) in a gas heated detached home from an older G-rated boiler with a programmer and room thermostat. Figures are based on fuel prices as of October2023. Savings will vary depending on the size and thermal performance of your home. Source: Energy Saving Trust.
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On a furnace or wood stove, the damper will be at the base of the flue but not visible from the outside. In an open fireplace, it comes in two styles: throat damper and top-mount damper. Closing the damper when a fire is not burning seals off the fireplace from the outside. This keeps the conditioned (heated or cooled) air inside your home from escaping and also prevents precipitation, wind gusts, and intrepid animals from making their way down the flue tube into your home.
Some older open fireplaces don’t have a damper, and they can function perfectly fine as fireplaces without one. Flue liners are typically built from stainless steel, clay tiles or a cast-in-place material. Each style of liner is durable and long-lasting – but no liner will last forever. Chimney liners should be inspected regularly to spot early signs of damage or malfunction. The flue is very important to the proper functioning of a fireplace, furnace, or stove. Fire needs oxygen to burn, and the flue creates negative pressure that pulls air up and through the combustion point. This updraft keeps the burn steady and hot, with more active flames and less smoke generated. Looking to become more self-sufficient? Join me and 14,000 others on Abundance Plusand get discounts, masterclasses, community, and more. What’s the Difference Between a Flue and a Damper?
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The flue is the inside passageway of your chimney through which smoke and combustion gases are carried up and away from your home out the top of your chimney. Most flues in homes today include a flue liner (or chimney liner), which is designed to provide smooth drafting and protect the chimney’s interior masonry from heat, fire and damage from acidic compounds. Annual chimney sweeping is recommended for flues connected with wood-burning fireplaces. A CSIA-certified chimney sweep uses specialized tools to remove creosote and obstructions, thereby keeping your chimney safe and efficient.
As noted, chimney liner inspections are important as are inspections of your masonry structure and components such as the chimney crown, chimney cap and chimney flashing. The fireplace damper A damaged fireplace damper may not fully open or close. Rust can cause this. So can warping and general old age. After an inspection, your chimney technician will tell you the extent of any damage present and will advise either repair or replacement of the damper. The fact is, these two parts of your system are quite different in terms of function and necessary maintenance and upkeep. Let’s look at the specs of flues and dampers. The chimney flueYou’ll be able to use your damper to keep the heated or cooled air of your home inside the walls of your house and keep the aforementioned critters, weather events, and debris (and sometimes very short-sighted children) outside of them. It helps to properly maintain the fireplace, to control the updraft, and to be able to seal it off when you aren’t using it. If a flue is used with a fireplace, it releases these through a chimney opening. If used with a furnace or wood stove, it releases them through a vent on the roof or side of the building. Image source: Camosse Masonry Supply For wood stoves, especially older models, the negative pressure (that is, the updraft of air pulled past the combustion point) created by the damper is an important element of temperature control.
When installed by a Worcester Bosch Accredited Installer with a Greenstar System Filter. The Greenstar 1000 and Greenstar 2000 guarantee is available as standard to both Excelerate members and non-WAI's, when fitted with any brand of system filter. Terms and conditions apply. Wood burning stoves already have a door on the front that can act as a seal against air movement, and their smaller flues are usually better and more easily defended from outside incursions but outside screens or caps. How to Tell if Your Damper Is Open or Closed By opening the damper less or more, you control the amount of air moving past the fire and the cleanness of its burn. Think of it as a throttle for your flames. The flue is also sometimes called the chimney lining when used with an open fireplace. You may think that it is your chimney that pulls the smoke up and out of your house when you’re burning fire, but this is incorrect.A throat damper is positioned at the bottom of the flue and about a foot above the firebox in an open fireplace, just out of sight from the outside of the fireplace. A top-mount damper will be at the top of the flue underneath the chimney cap. Do You Need a Fireplace Damper? This is especially important if you have a throat damper instead of a top-mount damper. All kinds of flammable buildup or debris can make their way down a flue over time, even if you have a chimney cap, and this is the leading cause of chimney fires. Do All Fireplaces Have a Damper?
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