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Bathroom extractor fan dripping water12/31/2023 ![]() ![]() Backdraft dampers are designed to prevent the backflow of exhausted air. DamperĪ backdraft damper is a necessary accessory for your bathroom fan, and a quality product with a good seal will help ensure your fan won’t drip. The more efficient your bathroom fan can be, the faster it can exhaust hot air, and this means there is less opportunity for condensation to form. So, if your duct is shorter, it creates a more effective environment for the exhaust system to remove the air and moisture from the bathroom. Shorter ducts are more efficient because they can maintain the air pressure better. This might even involve replacing old insulation that is no longer functioning appropriately. This, in turn, prevents condensation from forming, so your bathroom fan can stay dry and drip-free. When you insulate the duct, you prevent the hot and cold air from meeting, which allows the extractor to exhaust the hot air from the bathroom. I believe that a condensation trap is unnecessary if the duct is appropriately and properly insulated, is not excessively long, and if there is a quality, airtight damper installed in the duct. Fans Less Likely to Need Condensation Trap If…ĭripping fans are common, but this doesn’t mean that they are normal. There are several reasons why condensation can form, and there are some pre-emptive actions you can take against the possibility. The meeting will still produce condensation. This can also occur in tropical environments where the bathroom air is potentially the cooler party and the outside air is hot. When the air cannot hold as much water, it forms droplets or condensation in the ducts, and this drips out of your bathroom fan. Condensation occurs when this hot air, in contact with colder air from outside, cools and can no longer hold as much water. The bathroom air is generally hot and humid after a shower, and the reason that the air is humid is because warmer air can hold more moisture than colder air. Your bathroom fan might be dripping for a variety of reasons, the most common being due to condensation.Ĭondensation is the product of the meeting of air of different temperatures. The seals on your backdraft damper are necessary for airtightness in order to prevent the exhausted air from flowing back into the bathroom. If your fan movement is compromised by building fungi, the condensation problem will worsen as air is exhausted less efficiently. Aside from the well-being of your household, mold and mildew can further compromise your bathroom fan if they grow on and damage the fan and seals in the ducting. Mold and mildew are health hazards, and we all want to avoid them. Dirty marks in your bathroom are unsightly and unwelcome, and as it is a recurring problem, your cleaning and repainting might feel futile after a while. So, it is very important not to have puddles standing in your bathroom for safety reasons.ĭirt and rust dripping into your bathroom will also cause staining. The water that forms on the floor can be a slipping hazard, especially for the oldest and youngest generations. ![]()
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