We get a lot of customers complaining about the draught that comes through air vents. The air vent is there to provide enough oxygen for your appliances when they are burning fuel. If they don’t get enough oxygen they produce carbon monoxide which is a killer. So the air vent is pretty useful when you’ve got a fire lit. But what about all the rest of the time, when the fire isn’t lit and there’s still a howling gale blowing through? Wouldn’t it be great to have something that restricted the air flow and prevented those annoying draughts? Ta daaa! We introduce the DR21, invented by David Gattie, a stove fitter with customers putting just such a complaint to him on a regular basis.
It is easily fitted onto the outside wall in place of the existing vent. There are no moving parts, just a clever design inside that zigzags the air, slowing it down, so it doesn’t rush in through the vent. If a greater amount of air is needed because the appliance is burning, the air can come in as fast as it likes, and if the appliance isn’t lit the air will just trickle in giving you just the amount of ventilation you need.
How does the DR21 air vent cover work?
A standard louvered vent basically lets air blow straight through the wall. The DR21 disrupts the airflow so that it can’t just blow straight in. However as soon as you light your fire and need more air for it to burn efficiently, the air will travel through the DR21 more quickly. Have a look at this video for a demonstration on how it works.
How do you fit the DR21 air vent cover?
If there’s already a hole drilled through with a louvred vent fitted, it’s really easy. Simply remove the louvered vent, drill holes for the back plate of the DR21, fix the back plate to the wall, pop in some adhesive and fix in the top plate. Have a look at this video for an installation demonstration.
If you’re just about to have a wood burning stove fitted then it’s likely the installer will need to drill a hole in the wall behind the stove in order to create sufficient ventilation. In that case show them your DR21 that you’ve just purchased and ask them to fit that instead of the standard louvred grille they were just about to put in place for you.
You can see the full instructions that come with the DR21 air vent cover here.
Why do we need vents?
All appliances that burn with a flame, including gas stoves, gas fires, boilers and wood burning stoves, need air as part of the combustion process. It is the reaction of oxygen with fuel that creates heat. Just as we need air to breathe and generate our own energy, so too does fire. And it needs a surprising amount of air in order to do this. Air contains just 20% oxygen so a lot of air is needed to supply what’s required. Older houses were built with little insulation and ill fitting windows, so basically had vents as part of the fabric of the structure. As buildings have become more air tight, or as insulation measures have been retro-fitted, it’s very important to make sure that all appliances that burn have a good enough air supply. If a fire doesn’t get a good enough supply of air it won’t burn properly and will produce carbon monoxide. To ensure your home is safe, it is worth having a carbon monoxide detector in your home if you've got a gas supply.
We get a lot of customers complaining about the draught that comes through air vents. The air vent is there to provide enough oxygen for your appliances when they are burning fuel. If they don’t get enough oxygen they produce carbon monoxide which is a killer. So the air vent is pretty useful when you’ve got a fire lit. But what about all the rest of the time, when the fire isn’t lit and there’s still a howling gale blowing through? Wouldn’t it be great to have something that restricted the air flow and prevented those annoying draughts? Ta daaa! We introduce the DR21, invented by David Gattie, a stove fitter with customers putting just such a complaint to him on a regular basis.
It is easily fitted onto the outside wall in place of the existing vent. There are no moving parts, just a clever design inside that zigzags the air, slowing it down, so it doesn’t rush in through the vent. If a greater amount of air is needed because the appliance is burning, the air can come in as fast as it likes, and if the appliance isn’t lit the air will just trickle in giving you just the amount of ventilation you need.
How does the DR21 air vent cover work?
A standard louvered vent basically lets air blow straight through the wall. The DR21 disrupts the airflow so that it can’t just blow straight in. However as soon as you light your fire and need more air for it to burn efficiently, the air will travel through the DR21 more quickly. Have a look at this video for a demonstration on how it works.
How do you fit the DR21 air vent cover?
If there’s already a hole drilled through with a louvred vent fitted, it’s really easy. Simply remove the louvered vent, drill holes for the back plate of the DR21, fix the back plate to the wall, pop in some adhesive and fix in the top plate. Have a look at this video for an installation demonstration.
If you’re just about to have a wood burning stove fitted then it’s likely the installer will need to drill a hole in the wall behind the stove in order to create sufficient ventilation. In that case show them your DR21 that you’ve just purchased and ask them to fit that instead of the standard louvred grille they were just about to put in place for you.
You can see the full instructions that come with the DR21 air vent cover here.
Why do we need vents?
All appliances that burn with a flame, including gas stoves, gas fires, boilers and wood burning stoves, need air as part of the combustion process. It is the reaction of oxygen with fuel that creates heat. Just as we need air to breathe and generate our own energy, so too does fire. And it needs a surprising amount of air in order to do this. Air contains just 20% oxygen so a lot of air is needed to supply what’s required. Older houses were built with little insulation and ill fitting windows, so basically had vents as part of the fabric of the structure. As buildings have become more air tight, or as insulation measures have been retro-fitted, it’s very important to make sure that all appliances that burn have a good enough air supply. If a fire doesn’t get a good enough supply of air it won’t burn properly and will produce carbon monoxide. To ensure your home is safe, it is worth having a carbon monoxide detector in your home if you've got a gas supply.
DR21 Air Vent Cover
8 reviews
£28.50
In Stock
Energy saving
Money saving
The DR21 air vent cover fits easily in place of louvred air vents and prevents annoying draughts from blowing through into your home.
Product description & details
We get a lot of customers complaining about the draught that comes through air vents. The air vent is there to provide enough oxygen for your appliances when they are burning fuel. If they don’t get enough oxygen they produce carbon monoxide which is a killer. So the air vent is pretty useful when you’ve got a fire lit. But what about all the rest of the time, when the fire isn’t lit and there’s still a howling gale blowing through? Wouldn’t it be great to have something that restricted the air flow and prevented those annoying draughts? Ta daaa! We introduce the DR21, invented by David Gattie, a stove fitter with customers putting just such a complaint to him on a regular basis.
It is easily fitted onto the outside wall in place of the existing vent. There are no moving parts, just a clever design inside that zigzags the air, slowing it down, so it doesn’t rush in through the vent. If a greater amount of air is needed because the appliance is burning, the air can come in as fast as it likes, and if the appliance isn’t lit the air will just trickle in giving you just the amount of ventilation you need.
How does the DR21 air vent cover work?
A standard louvered vent basically lets air blow straight through the wall. The DR21 disrupts the airflow so that it can’t just blow straight in. However as soon as you light your fire and need more air for it to burn efficiently, the air will travel through the DR21 more quickly. Have a look at this video for a demonstration on how it works.
How do you fit the DR21 air vent cover?
If there’s already a hole drilled through with a louvred vent fitted, it’s really easy. Simply remove the louvered vent, drill holes for the back plate of the DR21, fix the back plate to the wall, pop in some adhesive and fix in the top plate. Have a look at this video for an installation demonstration.
If you’re just about to have a wood burning stove fitted then it’s likely the installer will need to drill a hole in the wall behind the stove in order to create sufficient ventilation. In that case show them your DR21 that you’ve just purchased and ask them to fit that instead of the standard louvred grille they were just about to put in place for you.
You can see the full instructions that come with the DR21 air vent cover here.
Why do we need vents?
All appliances that burn with a flame, including gas stoves, gas fires, boilers and wood burning stoves, need air as part of the combustion process. It is the reaction of oxygen with fuel that creates heat. Just as we need air to breathe and generate our own energy, so too does fire. And it needs a surprising amount of air in order to do this. Air contains just 20% oxygen so a lot of air is needed to supply what’s required. Older houses were built with little insulation and ill fitting windows, so basically had vents as part of the fabric of the structure. As buildings have become more air tight, or as insulation measures have been retro-fitted, it’s very important to make sure that all appliances that burn have a good enough air supply. If a fire doesn’t get a good enough supply of air it won’t burn properly and will produce carbon monoxide. To ensure your home is safe, it is worth having a carbon monoxide detector in your home if you've got a gas supply.
We get a lot of customers complaining about the draught that comes through air vents. The air vent is there to provide enough oxygen for your appliances when they are burning fuel. If they don’t get enough oxygen they produce carbon monoxide which is a killer. So the air vent is pretty useful when you’ve got a fire lit. But what about all the rest of the time, when the fire isn’t lit and there’s still a howling gale blowing through? Wouldn’t it be great to have something that restricted the air flow and prevented those annoying draughts? Ta daaa! We introduce the DR21, invented by David Gattie, a stove fitter with customers putting just such a complaint to him on a regular basis.
It is easily fitted onto the outside wall in place of the existing vent. There are no moving parts, just a clever design inside that zigzags the air, slowing it down, so it doesn’t rush in through the vent. If a greater amount of air is needed because the appliance is burning, the air can come in as fast as it likes, and if the appliance isn’t lit the air will just trickle in giving you just the amount of ventilation you need.
How does the DR21 air vent cover work?
A standard louvered vent basically lets air blow straight through the wall. The DR21 disrupts the airflow so that it can’t just blow straight in. However as soon as you light your fire and need more air for it to burn efficiently, the air will travel through the DR21 more quickly. Have a look at this video for a demonstration on how it works.
How do you fit the DR21 air vent cover?
If there’s already a hole drilled through with a louvred vent fitted, it’s really easy. Simply remove the louvered vent, drill holes for the back plate of the DR21, fix the back plate to the wall, pop in some adhesive and fix in the top plate. Have a look at this video for an installation demonstration.
If you’re just about to have a wood burning stove fitted then it’s likely the installer will need to drill a hole in the wall behind the stove in order to create sufficient ventilation. In that case show them your DR21 that you’ve just purchased and ask them to fit that instead of the standard louvred grille they were just about to put in place for you.
You can see the full instructions that come with the DR21 air vent cover here.
Why do we need vents?
All appliances that burn with a flame, including gas stoves, gas fires, boilers and wood burning stoves, need air as part of the combustion process. It is the reaction of oxygen with fuel that creates heat. Just as we need air to breathe and generate our own energy, so too does fire. And it needs a surprising amount of air in order to do this. Air contains just 20% oxygen so a lot of air is needed to supply what’s required. Older houses were built with little insulation and ill fitting windows, so basically had vents as part of the fabric of the structure. As buildings have become more air tight, or as insulation measures have been retro-fitted, it’s very important to make sure that all appliances that burn have a good enough air supply. If a fire doesn’t get a good enough supply of air it won’t burn properly and will produce carbon monoxide. To ensure your home is safe, it is worth having a carbon monoxide detector in your home if you've got a gas supply.
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Free when you spend over £30 or £3 for orders under £30.
Delivered within 2-4 working days from the date of dispatch.
Smaller items will be delivered using Royal Mail 48. Larger items will be delivered by Fedex or ParcelForce.
Delivery Monday to Saturday (excluding bank holidays).
Expedited delivery
£6 for all orders.
A fully tracked service, delivered within 1-3 working days, from the date of dispatch.
Smaller items will be delivered using Royal Mail 24. Larger items delivered via FedEx or ParcelForce.
Delivery Monday to Saturday (excluding bank holidays).
We have a 60-day return policy, which means you have 60 days after receiving your item to return it.
To be eligible for a return, your item must be in the same, re-sellable condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
The postage cost for the return will need to be covered by yourself (please keep the proof of postage until your return has been processed).
At the core of Chimney Sheep is our Community Interest Company, Buy Land Plant Trees (BLPT). For every purchase you make with us, 20% of the profit facilitates the planting of trees on agriculturally poor land in Cumbria.
We set up BLPT in 2019 as a ‘boots on the ground’ tree planting initiative. The company is run by us and the tree planting is done by us. We do it to help you and us to reduce our impact on the planet. The trees we plant reduce CO2 output as well as contribute to the reduction of flooding and the creation of habitats for wildlife.
BLPT isn’t a tick box exercise nor a distant and detached carbon offset company. In fact, this is as much part of our business as the products we sell and is an integral part of our ethos. We are big believers in the phrase ‘think globally, act locally’ and want to make a genuine difference
I replaced the standard angled vent which my builder had installed on the outside of the vent for my wood burner with the DR21 and it has made an instant improvement on the left of drafts coming in to my house. Now they are zero!
M
Malcolm Watson
Definitely does the job; no longer a cold draught from below the log burner when it is not in use, and log burner still burns clean when lit. Easy to fit in place of the previous vent cover.
D
D Williams
I was very pleased to have discovered this as a safe way to reduce the draught from a vent (hole in the wall) made when an open fire was installed. However, it does not seem to have made an impact. I don't see any improvement from the louvred vent.
C
Chimney sheep fan
Does the job but seems a bit pricey.
A
Amazon Customer
Quick delivery. Easy to fit. Really reduced the draughts through the original outlet. Extemely well pleased.
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