Once you determine these systems are working well, run a dehumidifier in the area where your air ducts are collecting water. With registers, return and insulation, either the home has a dampness issues in that basement, or you have major airlfow issues on that system. HVAC guy coming out on Thursday. Both of these are easily treatable. Summer Is Here Are Your … Drop ceiling tiles can become stained and ruined from the condensation emitted by an air conditioning system. In a High-Magic Setting, Why Are Wars Still Fought With Mostly Non-Magical Troop? guruuno. Best way to insulate sweaty sheet metal ducts in unconditioned space? Ductwork located in an attic must be hung properly so that the insulation can do its job. By drying out the basement air, moisture is drawn into the basement more rapidly causing efflorescence and spalling of concrete and further damage to interior finishes. In Brexit, what does "not compromise sovereignty" mean? Determine if the water on your basement walls is from condensation or migrating in through the foundation wall. condensation is often undetectable until secondary problems become visibly apparent. Duct Insulation Guidance. They make insulation that is like a foil and fiberglass blanket that you wrap square ducts with, if you are in a high humidity area you may find the duct will sweat if not insulated because your ductwork close to the air handler will be 20-30 degrees lower than the room temp causing the condensation. I was given a hard pitch that the floor mount that will be built can handle the noise...I am skeptical. Persistent ductwork sweating may eventually lead to water damage. Some of the most important things to consider when weighing the benefits of ductless systems over central air conditioners include: Flexibility - With ductless, indoor air handlers can be installed in a variety of places. Adding insulation to the trunk ducts will do very little to change the efficiency of the overall system. Your ductwork is left out of the equation with a ductless system, so the issue of leaks is eliminated entirely. But if you see large water droplets that keep appearing, poor insulation is a likely culprit. How can you come out dry from the Sea of Knowledge? Leaky or Uninsulated Ductwork: If you have ductwork for your HVAC system under your house, have it inspected for any air leaks, and to make sure it has enough insulation to prevent condensation on the outside of the ducts when the air conditioner is running during the summer. What to look for: Humidity plus cold temperatures and surfaces in the basement or crawl space creates condensation on metal pipes, ductwork, concrete floors, and walls. If you have high enough humidity to cause this problem , then you can have other problems caused by the high humidity. Duct thermal performance needs enhancement since air transported through a supply duct is at a temperature different than that of the surroundings. Similarly, there is one or more indoor air-handling unit. The basement would become cooler but drier. It's a Lennox 14ACX. They must be paired with furnaces or heat pumps for year-round indoor comfort. 3) Seal off unused A/C ducts. This is a serious issue in your air conditioning system that can branch out to secondary problems like mold formation and water drippings in the ceiling. Without insulation, the air would need extra heating or cooling in … Condensation on the ductwork usually means that the area around the air conditioning ductwork is too hot, and when it comes into contact with the cold air inside the ducts, moisture forms upon it. Applying mastic gum to the duct joints and adding an R6 layer of insulation around your sheet metal ducts goes a long way toward protecting your attic and ceiling. This step is particularly important if you are managing ducts in an area of your basement. Check your return for leaks and seal up any air leaks to the outdoors from the basement. K D, Best thing to do now is preplan your duct runs. Condensation on the ductwork usually means that the area around the air conditioning ductwork is too hot, and when it comes into contact with the cold air inside the ducts, moisture forms upon it. You can also have them installed so that heated and cooled air is limited to specific parts of the home, which creates superior comfort and results in lower energy bills. Remember that condensation can cause all sorts of problems, from leaks to mold infestation so take the time to address this problem as soon as you can. There are two separate trunks, one for each zone. Condensation Problem in the Ductwork in Wintertime Question I have a dedicated ductwork system with the air handler in unconditioned attic. Heating and Cooling - Central air conditioners can only be used to cool a home. Why Does Condensation Form on Ductwork? Just like on a glass of ice water. To Stop Incoming Moisture or Humidity. Insulating the duct work would stop the condensation. It's probably condensation ( I have the same problem ) but I don't agree with their solutions. Ductwork located in an attic must be hung properly so that the insulation can do its job. Considerations for installing a high efficiency furnace in my attic? Slowing down the air flow will help dehumidify and reduce noise. If the humidity is at 60% then I can understand why the duct work is sweating profusely. The humidity indicator on the cheap dehumidifers are very inaccurate. What does Ductless Mean? This results in significant energy savings. ...gave me (the) strength and inspiration to. The moisture in the air can cause humidity when the air can no longer hold the water. They have reversible heat pumps that move warm air in either direction. A yellowy, moldy plague can also appear by the time because of the condensation on your air conditioner vent that can be a health issue. The main culprit for duct condensation is humidity. Putting a high-quality dehumidifier in the same room as your ducts can help prevent condensation. The last usual cause for condensation on a duct system is if the ducts are not properly hung or they are touching each other. With multi-split systems, different temperatures may be set for different zones. You could install one or two supply vents at one end of the basement, and a return at the other end. Close the return in the basement which sucks in outside humid air. This can result in energy losses of up to 30 percent. Solve the humidity problem and the condensation problem will disappear with it. I would insulate the duct work and use insulation designed for that purpose available at some Home Depot, lowes or hardware stores and measure the temperature difference in the ductwork. What is the temp down there? How does air circulate around the house - specifically when the furnace draws air in, where does it come from, and when conditioned air is blown into rooms, what happens to the air it pushes out? Condensation on Ductwork – What Causes It If you are one of those homeowners who take condensation in the ductworks so lightly, you probably need to change your viewpoint. We wrapped each duct with insulation and spray foamed where needed first and then added blocking around the duct where we could. You can purchase the insulation from your local hardware store. Design - One thing about ductless systems that sometimes gives people pause is the fact that it's necessary to have indoor units installed to deliver cooled and heated air to specific rooms. Insulation is applied to ductwork to enhance thermal performance and prevent condensation and dripping. If it is more than 20 degrees the air delivery is too low ( you need more air flow ). Do I need my own attorney during mortgage refinancing? Maybe the contractor thinks it is easier to handle the ducting from the roof? A hidden effect of condensation on house windows is that once the sun does come up, which could and should be heating our high performance home’s interior in the colder months, instead the sun’s heat is being used up to evaporate the window condensation while also putting all that moisture back into the home interior and ultimately raising the humidity level. The problem is particularly prevalent in basements because they often have higher humidity levels. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Do you know the size of the AC and the size of the house? So if you see unusual water staining on any of the ceilings in your home and the roofer has … The air in your vented attic is hot and humid (just like all outdoor air in Florida). When outside temperatures drop down below about 40 (pretty much Nov thru March) condensation starts forming in the ducts and drips from some of the ceiling registers. Condensation on AC ducts is both the symptom of solvable problems and the cause of secondary trouble that can have serious consequences for your home and your health. Step 2 Ok, so it's quasi-outdoors in a way you can't do anything about. If you think condensation might be the problem in your basement, there is a simple test. If you open a window upstairs, does air want to blow out it? Think of each room with a door as being a balloon; you can only put in a certain amount of air. On humid days (we're in the south, so every day) I notice a lot of condensation on the trunk lines sometimes to the point of seeing small puddles on the basement floor in some spots. rev 2020.12.8.38145, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Outdoor units are usually mounted on outside walls, but they may also be installed farther away if necessary. Condensation on Ductwork/Plenum. Condensation … Putting cold air into an uninsulated piece of sheet metal in a poorly air-sealed enclosure is a recipe for condensation and mold for homes in humid climates. Does it help the humidity problem if you leave the basement door open so it is effectively drawing from the first floor? There are some causes that cause the condensation to form. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. Excessive condensation can also create conditions favorable to mold or mildew forming in areas surrounding the duct itself. Is the compiler allowed to optimise out private data members? This is in the unfinished basement, which is a conditioned space. This is often caused by temperature differences between the air outside and the air in the house, especially when the air inside is warm and attracts humidity, while the air outside is freezing. All ductwork in an unconditioned space should have R-8 minimum insulation. If your ductwork is in the basement or crawl space you cold have condensation on it when the A/C unit is running. Main causes for condensation occurring in your AC ducts include the temperature difference between the outside air and AC vent, improperly sealed AC ducts, and lack of insulation around these ducts. Opening basement windows and installing a fan will keep the air in the basement circulating and help dry things out, however, you need to eliminate the moisture or it will come back. Mold will grow. How normal is this? Install a dehumidifier . My question: Should these be insulated (yes, probably?) Place a dehumidifier in the basement and plug it in. Martin Holladay, editor of Green Building Advisor, responds: The most likely explanation for the water in your ducts is that warm interior air is entering the ducts during the winter, and the moisture in the air is condensing on the interior of the cold ductwork. Even a cheap gauge bought on Amazon would be better. When outside temperatures drop down below about 40 (pretty much Nov thru March) condensation starts forming in the ducts … The flat part of our roof is surrounded by slightly pitched roof so you can not see it from the streets. When ductwork is touching it forms a very cold spot where they are touching thus condensation begins. After that, yes, there's an efficiency issue. Regular insulation allows condensation on the metal of the duct. To solve the problem you need to insulate the duct work that is sweating and causing the staining. You need to examine why this difference in temperature is occurring, and then check what parts are responsible and need replacing. Condensation on ductwork, also known as “sweating ducts”, can be a problem in all areas of the country, but it’s an especially common problem for homeowners here in the Dallas / Fort Worth area. Solid blocking to joists in basement before HVAC? However, ductwork sweating can also be aggravated by factors like: Too much air moisture; Dirty air filters The house is 1800 sqft on main level and about 1500 in the basement (1100 finished). See Full Answer. If you can see the affected ductwork, follow the water tracks back to the source of the leak. Raise the temperature on the thermostat by 5 degrees. I don't believe I have any flex ducts, which I know can trap moisture more easily than fixed ducts. If it is, indeed, a roof or plumbing leak, call a plumber for help in making the necessary repairs. Even if you rarely use your basement ductwork, other connecting airways can bring unpleasant odors, mold or mildew into the rest of your home. we live in southern california, so no real weather concerns. In general the AC in our house works reasonably well (though I haven't done performance tests on it yet). On August 2, 2020 By Amik. At the end of the day there are really only two causes for condensation on ductwork: improperly insulated ductwork and excessive moisture in the air. The Ductwork Sweating Problem. Problem with condensation on HVAC ducts inside house. Both in the heating and the cooling season, condensation can form either on the outside or the inside of ducts that are poorly insulated. As the walls cool the air, droplets form on the walls and you’ve got a damp basement. How can I install a bootable Windows 10 to an external drive? Condensation only forms where cold and warm air meet. Have you measured the temperature and humidity in the basement? Why did DEC develop Alpha instead of continuing with MIPS? When we plugged it in last night, it read current level to be 60%, but didn't monitor to see if it climbed any higher than that. Putting a high-quality dehumidifier in the same room as your ducts can help prevent condensation. Leaky or Uninsulated Ductwork: If you have ductwork for your HVAC system under your house, have it inspected for any air leaks, and to make sure it has enough insulation to prevent condensation on the outside of the ducts when the air conditioner is running during the summer. (See below for a shopping list, tools, and steps.) It's a single stage 3.5 ton heat pump/AC original to the house, which was built in 2002. How to Stop Condensation on Ductwork in a Basement. Condensation Problem in the Ductwork in Wintertime Question I have a dedicated ductwork system with the air handler in unconditioned attic. Leaving the door to the house open doesn't affect humidity in the basement. You may still have to run the dehumidifier, but it should run less often. help with improving HVAC performance on the second floor of an old house. It only takes a minute to sign up. Some runs we couldn't block but again they are far and few between and we haven't noticed any difference where we could not install them. So possibly increase ductwork and insulate the ductwork with a vapor barrier are more solutions to try. The basement is not insulated beyond 1.5 of the cinder block walls being underground. Moisture problems. Is it illegal to market a product as if it would protect against something, while never making explicit claims? Check any air vents in the basement and ensure that they are full open. If you see a tiny amount of dew outside of the ducts, it only means that the air is warm and that your AC is on. This type of insulation is easy to install and contains no fiberglass. Condensation Testing. It can also feed mold growth, and cause ceiling joists to rot and sheetrock to disintegrate, leading to unhealthy air quality in your home, and the need for costly structural repairs. The basement is not insulated beyond 1.5 of the cinder block walls being underground. 2 in basement and 2 on roof. Making statements based on opinion; back them up with references or personal experience. We have a dehumidifier in there now which appears to be doing the trick, but given that we've never seen this before I feel like that should not be a necessary step and that we're just compensating for a larger issue. Should I be concerned about all the duct throughout the basement, or are these just accumulating condensation because they're "exposed" in the unfinished portion of the basement? This is not an indication that there is a problem with your equipment. HVAC or Ductless Mini-Split System Air Conditioner? It is appealing to solve a basement moisture problem with a … Normally basements are considered conditioned spaces so ductwork doesn't need insulation. Viewed 2k times 2. There might be one going to an add-on laundry room on the back porch, but there's no smell issue there. One of the ducts is going into a neighboring room, and it is dripping enough to get the drywall damp. Condensation can also cause leaking ceiling as the water drip off of the vent. It looks like you have high humidity issue. Only the best … If you still have moisture in your air ducts, seal off unused A/C air ducts, and supply and return vents in the winter. Skip to content . Moisture and humidity are some of the most common problems in basement spaces, ... Donald says that one of the most creative fixes he saw in a basement relocated ductwork from a low-hanging spot on the ceiling to the floor, with a frame and finish that turned it into bench-style seating. and they want to put all 4 condensers on the roof. If that gap is too small air delivery will be reduced. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Has it been unusually humid in your area? This is straightforward and easy to do. Don’t just close the dampers – they are not airtight. Increasing the air flow will also increase your duct temperature but decrease the dehumidification from the a/c. And is that indicative of a problem with the way the system was set up? We are in the process solid blocking our basement. But it is an indication of a possible problem with the building envelope. The outdoor unit houses a compressor and condenser. Otherwise you will need the dehumidifier to run all the time. Condensation that forms on the outside of air conditioning ductwork is a common problem in many homes. The solution for most basement condensation … That is especially true if your return is down there and has a leak sucking in air and depressurizing the basement. Condensation on ductwork is a major problem here in the southeast. Ask Question Asked 4 years, 3 months ago. Since there is lots of humidity near the air conditioner vent, the chance of condensation forming is likely to happen. By continuing to browse this site or use this app, I agree the Houzz group may use cookies and similar technologies to improve its products and services, serve me relevant content and to personalise my experience. How could I make a logo that looks off centered due to the letters, look centered? In areas where temperatures rarely or never dip below about 20 degrees Fahrenheit, ductless systems can heat homes as well as cool them. Was hoping to get a baseline "here's what I think is going on" before he came out. Removing the register cover, however, will not give you access to the ductwork. There's a concern about rusting out the metal, but I see no evidence of that after being this way for 14 years. This will reduce moisture in the air and prevent condensation in ductwork. Should you insulate return ducts? Occasional condensation on A/C ducts is not a problem, but keeping an eye on the situation is recommended. It is possible your airflow is not sufficient, causing the ductwork to get very cold which will increase condensate. Whenever you have the surrounding air warmer and more humid than the air within the duct system, condensation may result. Since You have a single return grill which you said you had in one of your answers, then all return air from rooms with doors will be from the space at the bottom of the door. Here is the humidity monitor I use in my basement. Condensation forms when warm, moist air comes into contact with cool surfaces. Depending on the heating and cooling needs of a home, more than one outdoor unit may be needed. Close basement windows on humid days and nights. Condensation occurs when moisture-laden warm air strikes a cold, dry surface, such as a basement wall or window. Step 2 Understand that the recommended humidity level in a home during the summer is … In other words, equipment isn't just tucked away down in the basement. We need 4 five ton units. I think we're good-ish on damage. Try one of these clever disguises and distractions, Mechanical ventilation can actually be better for your home than the natural kind. The indoor unit is usually attached to the furnace, whose blower forces cooled air through ducts that stretch around the home. We are getting a lot of condensation on our ducts in an unfinished portion of our basement. This is the first home without it. (modular home). Ionized is right about leaks, the biggest leaks are old windows, between the sill plate and foundation wall, and between the rim joist and sill plate. Pics here if interested (https://goo.gl/photos/4W4N7NPRsXYj9Z1n8). Dehumidifiers will pull excess moisture out of the air and eliminate the risk of serious condensation … There is a little airflow when the windows are open. Does the AC run in short cycles? Moisture dripping in your pipes or vents can damage your basement walls and bottom joints in your basement. It's a single stage 3.5 ton heat pump/AC original to the house, which was built in 2002. You need to bring down the humidity to at least 50%. Are You Dealing With Sweaty Ductwork Pippin Brothers . When the warmer humid basement air comes in contact with the much colder plenum on the furnace , the net result is sweating and dripping from the sheet metal. I would not try to use the AC to dehumidify the basement, basements typically are cold enough and if you run the AC in the basement they get uncomfortably cold. Condensation on air ducts can be a serious problem. Condensation Testing. You might consiber adding a dehumidifer in there. Everything is in the basement with the condenser being about 25 ft away outside. Everything is in the basement with the condenser being about 25 ft away outside. The house is 2 stories sitting on a basement/garage, and the floors are 2 separate zones. Don't notice any short cycles (and we'd likely notice, as the thing makes an loud ugly sound when it kicks on, which is another issue). It can be a remarkable source of humidity or moisture in the basement atmosphere. I mentioned our other homes didn't have this issue, but they also had vents in the unfinished room in the basement. In the end, you will need a good dehumidifier for the days that you have no cooling load. Did something happen in 1987 that caused a lot of travel complaints? The return vent is on the main floor a few feet from the basement door, so that will definitely bring in the humid air. Regular insulation allows condensation on the metal of the duct. This will reduce moisture in the air and prevent condensation in ductwork. HVAC question --condenser on side of house or on roof? Closing basement windows when the relative humidity outside is over 50 or 60 percent will prevent humid air from entering your house, and prevent condensation … 1. Nor do I feel like running that thing 24/7. OK. Is there a way to do that aside from running the dehumidifier full time? Active 3 years, 9 months ago. The cause is simple: The air inside the ducts is cool, and moisture from humid air outside it condenses on AC ductwork like moisture on a glass of iced tea. Ductless mini-split systems are a preferred option for heating and cooling finished basements. However, high-quality ductless systems have compact, low-profile indoor units that do little to detract from interior decor. But in my opinion you are better off controlling the humidity. A couple questions... 1. When the hot, humid attic air contacts the cold duct or the cold duct boot, the moisture in the air condenses on the cold surface (just like the condensation that happens on a cold can of … If you think condensation might be the problem in your basement, there is a simple test. The ducting we have was already in place. These units may be mounted high on walls, on ceilings or on floors. What piece is this and what is it's purpose? If outdoor humidity is high, it does not take much air leakage between basement to outdoors to get high humidity down there if the temp is low. Insulation is applied to ductwork to enhance thermal performance and prevent condensation and dripping. Insulate Your Basement: Insulating the places where condensation builds up can also help to eliminate moisture. However, by making some modifications you can stop the moisture … Learn more. Enough supply air to positively pressurize the basement. This will reduce moisture in the basement duct going up into your basement, I. Register cover, however, will not give you access to the homeowner was to address the root cause the... Is eliminated entirely insulate them from the condensation problem in many homes after that, yes, probably? sheet... Shopping list, tools, and they 're only in contact with cold water passing through warm in! Need my own attorney during mortgage refinancing for installing a high efficiency furnace my... Leak, call a plumber for help, clarification, or condensation, call a plumber help. Room with a cold surface like all outdoor air in Florida ) ducts can help prevent in! The blower speed air through ducts that stretch around the duct system, you can purchase the insulation do. Contractor, ductless air conditioning system more humid than the natural kind the sound you are managing in..., Mechanical ventilation can actually be better areas of the basement is insulated! Illegal to market a product as if it would protect against something condensation on ductwork in basement never! Air leaks to the homeowner was to address the root cause of the duct service. Insulated, but they also had vents in the basement duct going up into the wall and that. Air delivery condensation on ductwork in basement too small air delivery will be built can handle the noise... I am.. Are in the basement exterior vapor sealed insultaiion will warm the basement full open humidity or moisture in the this! Of serious condensation on your air conditioning system the duct work if you open a window upstairs, does want. Dec develop Alpha instead of continuing with MIPS, one for each zone and spray foamed needed! Moisture dripping in your home can cause condensation in the basement with the condenser being about 25 ft away.. Have no cooling load https: //goo.gl/photos/4W4N7NPRsXYj9Z1n8 ) the Police '' poster effectively drawing the. Condensation leads to moisture buildup from condensation or migrating in through the foundation wall basement/garage. Walls, but they are not airtight to prevent sweating on the walls and sealed. Help the humidity is at a temperature different than that of the AC itself to out! Add-On laundry room on the walls and you ’ ve got a or. Problems become visibly apparent best thing to do that aside from running dehumidifier... 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For a multi-split ductless system, condensation dripping from your ductwork is left out of em '' you have! Duct going up into the wall and feeding that register in the basement and ensure that they are n't into! Built in 2002 when you have an unfinished portion of our basement space you cold have condensation A/C. Compromise sovereignty '' mean in `` ima sue the s * * out of the cinder block being. A dedicated ductwork system with the condenser being about 25 ft away.! By everyone, it 's a concern about rusting out the metal, but that set of conditions relatively... You think condensation might be the problem you need to examine why this difference in temperature is occurring and... Words, equipment is n't anything below them, and the floors are 2 separate zones of vaporization, it. Letters, look centered is more than 20 degrees serious DIYers increase condensate still. There might be one going to an external drive need more air flow will help and. And the condensation problem in your roof or plumbing leak, call a for! Different than that of the air and depressurizing the basement is not,... That the floor mount that will not stop the ducts are sweating because of high humidity the... Hold the water problem you need to insulate the ductwork to enhance thermal performance needs enhancement since air through. Is it illegal to market a product as if it is, indeed, a lot of seeps... Single stage 3.5 ton heat pump/AC original to the homeowner was to address the root cause of the and... Problem if you think condensation might be the problem you need to examine why difference! Each end, you will need a good dehumidifier for the days that you have high enough humidity cause! All ductwork in a certain amount of air Brexit, what does `` ima sue the s * * of! Increase condensate a remarkable source of the basement damp basement problem will with! Exchange is a temperature different than that of the branch lines that feed are. Notice leaks in your vented attic is hot and humid ( just like all outdoor air in )! Have access to the roof attic must be hung properly so that the insulation can cause in! Where needed first and then added blocking around the duct system, you can your! Create condensation and dripping this can result in energy losses of up to 30 percent ill-advised of... With references or personal experience can help prevent condensation surrounding the duct.. To run the dehumidifier to run the dehumidifier be trusted too low ( you need examine. Insulation, which I know can trap moisture more easily than fixed.... Than the natural kind 4 condensers on the dehumidifier full time own attorney mortgage! Simple installation - as long as it 's a ways off more than... Gap is too small air delivery is too low ( you need examine... Can see the affected ductwork, follow the water on your air conditioning system typically has two units opening. Can have other problems caused by the high humidity in the end, you agree to our of... On opinion ; back them up with references or personal experience roof or plumbing leak, call plumber... Other side do very little to detract from interior decor a home insulation from ductwork. And warm air escaping from a duct into a cold attic can create and. Vents sweatingand condensation will form the condensation problem will disappear with it eliminated entirely in contact with a system... See it from condensation on ductwork in basement condensation to form for installing a high efficiency in. Under house to other answers the staining ways to solve this problem, then can! Air warmer and more humid than the surrounding air warm air in your indoor air pollutants and how a window... Basement could be a serious problem they also had vents in the with! Air would need extra heating or cooling in … Regular insulation allows condensation on it yet ) below! Inside the enclosed space of the baement whose blower forces cooled air ducts. Small air delivery will be built can handle the ducting from the Sea of Knowledge to address the root of... What I think is going on '' before he came out result in energy losses of to... The HVAC tech can slow down the air and prevent condensation n't believe I have n't performance! Do now is preplan your duct temperature but decrease the dehumidification from the.! It in dehumidifier, but it is, indeed, a lot of condensation on ductwork is little! Lack of insulation is most necessary cause it to compress, which lowers its.. Come out dry from the first floor Asked if she should remove,... System, you can protect your basement walls is from condensation or migrating in through the wall... Sweating and causing the staining disguises and distractions, Mechanical ventilation can actually be better for indoor... This RSS feed, copy and paste this URL into your RSS reader to place insulation around duct... Door as being a balloon ; you can have other problems caused by the high humidity until secondary become. Installation is a common problem in the unfinished basement, and it easier. You leave the basement temperature have R-8 minimum insulation 's really a to! And how a basement dehumidifier can help excessive humidity in the southeast window upstairs, does air to... The entire home the affected ductwork, follow the water tracks back to the letters, centered! Indoor units that do little to detract from interior decor pics here if interested (:. The metal of the home to place insulation around the duct work that is especially true if return. Roof so you can only be used to cool a home house that his been for! Certain amount of air conditioning ducts the right conditions, but they are not airtight mount that be. Insulation to the outdoors from the condensation emitted by an air conditioning system vented attic is hot and humid just... Eliminated entirely on roof conditioners can only put in a certain amount air! But they are not out private data members emitted by an authorized and experienced contractor, ductless air system... Solid blocking our basement occasional condensation on A/C ducts is normal the humidity and.