
Fireplace vent covers are used to guard against extreme temperatures, bugs, and small critters entering the home. They can also be used to prevent drafts, insulate the home, and reduce energy costs. There are various types of fireplace vent covers available, including those made from plastic, aluminum, and steel. When considering covering a fireplace blower vent, it is important to be cautious as improper installation or covering of vents can lead to fire issues.
Characteristics and values of plastic covering for fireplace blower vents
| Characteristics | Values |
|---|---|
| Material | Plastic, aluminum, or polystyrene foam |
| Purpose | Preventing drafts, pests, and heat loss/gain |
| Installation | Magnetic, ties, or grommets |
| Size | Varies, e.g., 6x6 inches, 8x8 inches, 12 ½" x 12 ½" |
| Price | $10.79-$41.67 |
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What You'll Learn

Plastic covering prevents bugs and critters from entering
Plastic covering is an effective way to prevent bugs and critters from entering your home through the fireplace blower vent. Insects and other small animals can squeeze through tiny openings in search of a warm, dark, and damp place to nest. By covering the vent with plastic sheeting, you create a physical barrier that blocks their entry.
The fireplace vent is a common entry point for various insects, including spiders, cockroaches, and stink bugs, especially during the colder months when they seek warmth. Plastic covering acts as a protective layer, preventing these unwanted guests from accessing your home.
Additionally, plastic coverings can be customized to fit your fireplace blower vent securely. They are often designed with strong attachments, such as magnets or ties, ensuring that the plastic sheet stays in place. This secure fit helps to eliminate gaps that insects could potentially exploit.
Beyond pest control, plastic coverings offer other benefits. They can help regulate temperatures by preventing heat loss during winter and heat gain during summer. This temperature regulation can lead to lower heating and cooling costs throughout the year.
It is important to note that while plastic coverings are a useful solution, they may not be a permanent fix. For more persistent pest issues or larger openings, seeking professional advice or exploring alternative methods, such as installing insect screens, may be necessary.
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It can also protect against extreme temperatures
Plastic covering for fireplace blower vents can help protect against extreme temperatures. This is especially useful when dealing with a direct vent fireplace, which is designed to intake air through lower vents and heat it before exhausting it out of the upper vent. By covering the blower vent, you can control the flow of heated air and maintain a more comfortable temperature in your home.
The Termination Cap Cover, for example, acts as a draft stopper and helps guard your house against extreme temperatures. It is made of lightweight solid aluminium with a radiant barrier material that reflects heat. This barrier can be placed between the heat source and the area you wish to keep cool, reflecting up to 97% of radiant heat energy back towards the source. As a result, you can keep the desired area cooler in the summer and prevent heat loss during the winter, leading to lower monthly utility bills.
Additionally, custom-made Termination Cap Covers can be fitted to your fireplace's termination caps. These covers are made of aluminium radiant barrier material, which is tough and can be reshaped if crushed. They are secured using brass grommets and soft twist ties, ensuring a snug fit. This type of cover also includes insulation, adding another layer of protection against extreme temperatures.
Fireplace vent covers are also available in various materials, such as aluminium, plastic, and magnetic vent blockers. These covers can be placed over the blower vent to regulate the temperature and prevent heat loss. They are designed to fit different fireplace designs and can be purchased from retailers like Walmart and Amazon.
It is important to note that blocking or covering vents may reduce the effectiveness of the fireplace in producing heat. Therefore, it is recommended to consult a professional or refer to the fireplace's installation instructions before making any modifications.
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Covering vents can reduce the fireplace's heat production
Additionally, covering vents can result in decreased airflow, which can also impact the performance of the fireplace. The reduced airflow can cause the heating or cooling system to become less efficient, as it has to work harder to circulate the air appropriately. This can lead to higher energy consumption and costs, contrary to what one might assume.
Covering vents can also cause an imbalance within the HVAC system, leading to various operational and maintenance issues. For example, the fan may work too hard and burn out, the heating coil may overheat and force a shutdown, or the cooling coil may freeze and also force a shutdown. These issues can further reduce the heat production of the fireplace and impact its overall performance.
Furthermore, covering vents can increase the risk of dangerous issues such as broken heat exchangers, which can lead to the release of lethal carbon monoxide into the house. This poses a significant threat to the safety of the occupants. Therefore, it is important to keep vents unobstructed to maintain the fireplace's heat production and overall functionality while also ensuring the safety of the household.
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Blocking vents may be unsafe
While it may be tempting to block a vent in an unused fireplace, it is important to consider the potential consequences. In addition to the risk of damp, blocked vents can also contribute to a build-up of toxic gases. This is because vents are designed to provide a pathway for gases to escape, and blocking this pathway can be hazardous.
Another safety concern is the potential for heat build-up. Fireplace vents are designed to allow heat to escape, and blocking them can cause excessive heat to accumulate in the fireplace and surrounding areas. This could potentially lead to a fire hazard if flammable materials are nearby.
Furthermore, blocked vents can restrict airflow and impact the performance of heating and cooling systems. This can result in higher energy costs as systems have to work harder to maintain the desired temperature. Additionally, blocked vents can affect the indoor air quality, leading to a stuffy and uncomfortable environment.
It is important to consult a professional before taking any action that could impact the safety and functionality of your fireplace and ventilation system. While there are products available, such as vent covers and draft stoppers, it is crucial to ensure that any modifications do not compromise the ventilation and safety of your home.
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Metal heat deflectors can be used to protect timber shelves
Fireplaces can reach temperatures of 1300°F or higher, which is hot enough to melt lead, magnesium, and car engine metal. This heat can be extremely damaging to the surrounding area, including timber shelves. To prevent this, metal heat deflectors can be installed.
Metal heat deflectors are a type of fireplace hood that prevents excessive temperature build-up, which can damage the hearth surround, mantel, or TV. These deflectors are typically made of heavy-duty materials such as 24-gauge stainless steel metal. They are designed to be easy to install, requiring only a few simple steps and no complicated screws or welding.
By installing a metal heat deflector, the heat from the fireplace is redirected outward into the room instead of up towards the wall or timber shelves. This not only protects the timber shelves from potential heat damage but also optimizes heat efficiency, making the fireplace a safer and more effective source of warmth for the room.
Additionally, metal heat deflectors can enhance the beauty of a fireplace by preserving the woodwork and craftsmanship of the surrounding area. This is especially important for those with wooden mantels or timber shelves, as the intense heat can cause damage to the woodwork over time.
Metal heat deflectors are a simple and effective solution to protect timber shelves from the high temperatures of a fireplace. They are easy to install, optimize heat efficiency, and provide a safer and more aesthetically pleasing environment for homeowners.
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Frequently asked questions
Covering your fireplace blower vent with plastic can help guard your house against extreme temperatures, bugs, and small critters.
Fireplace blower vent covers are usually made of aluminum, but they can also be made of plastic or polystyrene foam.
To attach a fireplace blower vent cover, you can use soft twist ties, magnets, brass grommets, or dow rods.
Yes, you can use a Flue-zee to cover the flue from the inside, or a metal heat deflector if you want to put a shelf above your fireplace.







































