DR21 air vents DR21, 12 W, Black

Product Information

The hole is 100mm, and yet the free air equivalent is 3400 sq mm. This is because the air vent sits on the outside of the wall, and does not reduce the size of the hole through the wall. Anyway, I would like to put a stop to this rattling and also stop the constant drafts coming from them. We are unlikely to use them, but I don't necessarily want to permanently disable them. Can anyone suggest some good ideas to help with this? Presumably by having 6inch wide holes that cannot be properly shut in so many rooms of our house, making it draughty, we run the risk of childhood TB and rheumatism and constant chest infections? Have none of you people heard of windows? Windows are natural ventilation and have the added advantage of not using extra electricity. So far as I can tell, my 70 year old house has survived the first 69 years of its life without extractor vents, probably because its owners understood about windows. I am fully aware of the problems of humidity, I just don't need some idiotic and expensive ventilation system treating me like an idiot and making a noise in my ensuite bathroom, when it's right next to a perfectly serviceable window. If I wanted that, I'd live in a hotel.

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. In brief this is caused by the mechanism of combustion. Fuel only burns when given a heat source in oxygen. So, as fuel is burned, oxygen in the area surrounding the fuel source is ”used up” by the mechanism of combustion, this then needs to be replaced. The reaction then pulls more oxygen into the area to replace the ”used up” oxygen – when this ocurrs in appliances, air is pulled in via the vent to do this. So, the rate of airflow in through the vent will automatically meet the demands for the appliance, regardless of the vent style. ii. The amount of air required depends on the size and efficiency of the appliance. Generally open fires need far more air than a stove.It cannot be used on a kitchen extractor fan and the fat in the air will rapidly clog the interior. Replacing a bathroom vent, such as the one with the flaps which rattle all night. Should be a straight swap. The vent has the same fixing holes as a standard louvred vent, so retro fitting one takes minutes, and it accepts all the standard tubes, ducting etc.

When heating a property with either an open fire or a solid fuel appliance there are several things that one should know: Now carefully glue the second magnet to the section of the cowl that you screw to the wall. Carefully aligning both magnets and ensuring you have the second magnet the right way round to attract the first magnet rather then repel. The Magnets should not touch or the attraction will be too strong for the flap to open when the extractor unit starts. v. Combustion air can either be fed into the stove with a direct air kit through a ducting to outside or by taking air from the room. If the air is taken from the room then an air vent must be installed in the room in which the appliance is situated. The DR21 air vent cover has pending patent and has been independently tested by BRE, has HETAS approval and is produced to ISO 9001:2015 standards. It is made of high quality thermoplastic and has been designed by a stove fitting expert. It is also entirely manufactured and produced in the UK following strict manufacturing guidelines. You can be rest assured you’re receiving one of the safest and most effective air vent covers on the market. I think this is the risk which extractor vents are designed to mitigate. I'm desperately trying not to use the phrase "nanny state" about this, but it's hard work.However, we have a problem with them. The external vent cover is quite flimsy plastic and rattles like mad at the slightest breeze. This is quite annoying since the house is otherwise quiet, especially the one in our ensuite bathroom. It also means that we routinely have a cold draft coming in to each room with an extractor. However, while something like this will be quite easy on the downstairs vents, it will be a real problem upstairs since they are beyond the reach of my extension ladder (25ft+) and there are no nearby windows for easier access. Vent caps work best in conjunction with other draught exclusion measures to keep your home warm and comfortable. Take a look at our other draught excluders range to get an idea of some more cost effective ways to keep your home efficient and cosy, as well as reduce those rising energy bills. You may also like… If you’ve already got a standard vent fitted – there’s already a hole drilled through the wall for airflow. This makes things really easy.

Do you think I could tape up the vents upstairs by taking the inside cover (including fan) off, reaching through and applying tape from the inside? According to research over recent years, childhood asthma is caused by too much ventilation, too little ventilation, too much cleaning/dusting and too little cleaning/dusting. I'd take all of it with a big pinch of salt. And I say this as someone who developed asthma as a child.

Where is DR21 LTD registered office?

Peter, you say that one would normally only open a window in warm weather. This is exactly my point, though. The nature of these extractors and the external vents is such that I effectively have a hole the size of a transom window open PERMANENTLY in several rooms of my house, since the extractors cannot properly be closed. vi. In old properties is considered that there is enough ?leakage? so that a stove of up to 5kw does not require an air vent. Your DR21 vent cap also comes with comprehensive fitting instructions, we have these available for online viewing here: DR21 Fitting Instructions

Your all need some good external grade glue, epoxy resin or something that will remain in place in low and high temperatures. Internal Super Glue will probably fail in winter temperatures. Most vents become a source of cold air and draughts are created as the fire draws the air from the vent. When heating a property with either an open fire or a solid fuel appliance there are several things that one should know. The DR21 air vent is affordable enough to form part of any standard quote and its draft reducing qualities and modern look can be used to upsell customers to a higher-powered stove than they might otherwise have bought. This does affect young children and there some research that it can be one of the causes of childhood asthma."I think it is one of the most exciting developments in solid fuel installation in years, but don’t take my word for it, watch our video. We point a garden blower at a standard air vent and the DR21 a ir vent. The results speak for themselves.