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A damp or musty smell is unpleasant whether you have an unfinished, partially finished, or fully finished basement. They must be paired with furnaces or heat pumps for year-round indoor comfort. Ductwork Insulation Prevents Condensation. 20 Ideas for Daring Ductwork, Know Your House: The Steps in Finishing a Basement, 10 Ideas for an Anything-but-Boring Basement, 8 Tips to Transform Your Basement Into a Wine Cellar, Houzz Tour: Swank Style for a Fully Stocked Basement, Get Cleaner Indoor Air Without Opening a Window, 5 Steps to Improve Your Heating System Now, Old Honeywell Oil furnace Thermostat wiring. Is it illegal to market a product as if it would protect against something, while never making explicit claims? The indoor unit is usually attached to the furnace, whose blower forces cooled air through ducts that stretch around the home. The ductwork in unconditioned areas, such as basements, floors, and ceilings is where ductwork insulation is most necessary. Moisture problems. When the temps are in the 90° F range, that also means the humidity level is very high. Just got a new 3 ton Infinity AC (2 speed compressor) and new Carrier high end furnace with electronic air cleaner, with Infinity thermostat. 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. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. That is especially true if your return is down there and has a leak sucking in air and depressurizing the basement. A couple questions... 1. Mold will grow. Ductwork in basement how to soundproof a basement ceiling don t finish a basementuntil you reasons you might have a cold basement pv heating airPoor Basement Ventilation Breaking The MythsSummer Is Here Are Your Hvac Ducts Sweating Tar Heel Basement SystemsAre You Dealing With Sweaty Ductwork Pippin BrothersBasement Condensation Moisture continue reading . (People often make the ill-advised move of opening basement windows in summer to reduce humidity. If it is more than 20 degrees the air delivery is too low ( you need more air flow ). and they want to put all 4 condensers on the roof. We do have access to the roof from inside one of the closets (Ladder to roof). You need to examine why this difference in temperature is occurring, and then check what parts are responsible and need replacing. Have you measured the temperature and humidity in the basement? There are two separate trunks, one for each zone. 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. It's a Lennox 14ACX. 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. Dehumidifiers will pull excess moisture out of the air and eliminate the risk of serious condensation … You may be able to use the AC itself to dry out the basement. In other words, equipment isn't just tucked away down in the basement. How can I improve recovery time of my hot water baseboard system? 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. Why did DEC develop Alpha instead of continuing with MIPS? When the time comes or if you have the money, the best thing that you can do to solve this problem is to just have your air ducts replaced with modern ductwork that includes i… If you open a basement window, does air want to suck in? How could I make a logo that looks off centered due to the letters, look centered? See Full Answer. Putting a high-quality dehumidifier in the same room as your ducts can help prevent condensation. There isn't anything below them, and they're only in contact with wood via hangers. The moisture in the air can cause humidity when the air can no longer hold the water. Without insulation, the air would need extra heating or cooling in … Dehumidifiers will pull excess moisture out of the air and eliminate the risk of serious condensation on your air conditioning ducts. Yeah, it's not a great spot. In general the AC in our house works reasonably well (though I haven't done performance tests on it yet). Install a dehumidifier . It's a single stage 3.5 ton heat pump/AC original to the house, which was built in 2002. Whenever you have the surrounding air warmer and more humid than the air within the duct system, condensation may result. I don't know why he is considering moving it. Is the compiler allowed to optimise out private data members? I look up, and there is condensation on the supply duct dripping down. 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 … Can the humidity reading on the dehumidifier be trusted? we live in southern california, so no real weather concerns. 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. This is the first home without it. Both of these are easily treatable. 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. Condensation only forms where cold and warm air meet. 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. Solve the humidity problem and the condensation problem will disappear with it. How To Stop Condensation On Ductwork In Basement. 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. In general the AC in our house works reasonably well (though I haven't done performance tests on it yet). The house is 2 stories sitting on a basement/garage, and the floors are 2 separate zones. Try one of these clever disguises and distractions, Mechanical ventilation can actually be better for your home than the natural kind. If you don't plan to use a room on a given day, you can stop having heated or cooled air directed there. You may still have to run the dehumidifier, but it should run less often. In the end, you will need a good dehumidifier for the days that you have no cooling load. Moisture buildup from condensation is very much like a slow leak. This can result in energy losses of up to 30 percent. Hasn't really been unusually humid. You need to examine why this difference in temperature is occurring, and then check what parts are responsible and need replacing. If it is, indeed, a roof or plumbing leak, call a plumber for help in making the necessary repairs. Active 3 years, 9 months ago. The last usual cause for condensation on a duct system is if the ducts are not properly hung or they are touching each other. Condensation on air ducts can be a serious problem. I know there are a lot of variables here so I'm just trying to get a basic understanding or rule of thumb. What is the temp down there? The problem is particularly prevalent in basements because they often have higher humidity levels. The outdoor unit houses a compressor and condenser. 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 … There are some causes that cause the condensation to form. Do you know the size of the AC and the size of the house? (modular home). The basement would become cooler but drier. Considerations for installing a high efficiency furnace in my attic? The basement is not insulated beyond 1.5 of the cinder block walls being underground. How do you list all apps in an adb backup .ab file? HVAC question --condenser on side of house or on roof? There might be one going to an add-on laundry room on the back porch, but there's no smell issue there. It only takes a minute to sign up. Summer Is Here Are Your … 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. Drop ceiling tiles can become stained and ruined from the condensation emitted by an air conditioning system. Anything to that? However, high-quality ductless systems have compact, low-profile indoor units that do little to detract from interior decor. This will reduce moisture in the air and prevent condensation in ductwork. So if you see unusual water staining on any of the ceilings in your home and the roofer has eliminated roof leaks it is likely coming from some fault with the duct system in your home. Should you insulate return ducts? Persistent ductwork sweating may eventually lead to water damage. Learn more. I feel many people only look at fixing the symptom of sweating ducts. guruuno. However, ductwork sweating can also be aggravated by factors like: Too much air moisture; Dirty air filters Just like on a glass of ice water. Step 2 You could install one or two supply vents at one end of the basement, and a return at the other end. 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. It can be a remarkable source of humidity or moisture in the basement atmosphere. 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. Increasing the air flow will also increase your duct temperature but decrease the dehumidification from the a/c. Do I need my own attorney during mortgage refinancing? Start by drying off a section of your basement wall about a foot square, then cut a piece of aluminum cooking foil, just a little smaller in size. Heating and Cooling - Central air conditioners can only be used to cool a home. The air in your vented attic is hot and humid (just like all outdoor air in Florida). There's a concern about rusting out the metal, but I see no evidence of that after being this way for 14 years. Close basement windows on humid days and nights. The ceiling will look horrible as it is rotting and can collapse sooner or later. These units may be mounted high on walls, on ceilings or on floors. Nor do I feel like running that thing 24/7. This results in significant energy savings. 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. 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. Drop ceiling tiles can become stained and ruined from the condensation emitted by an air conditioning system. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. 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). When humid air comes in contact with a cold surface, it condenses and forms droplets of water, or condensation. What piece is this and what is it's purpose? First off, you are right about the lack of insulation. Condensation in the Air Ducts. If you open a window upstairs, does air want to blow out it? It is appealing to solve a basement moisture problem with a … All of the branch lines that feed the first and second floor are insulated, but the trunk lines that feed those are not. Here is the humidity monitor I use in my basement. The house is 1800 sqft on main level and about 1500 in the basement (1100 finished). Insulating the duct work would stop the condensation. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Condensation … Thank you for your responses. Only the best … Condensation Problem in the Ductwork in Wintertime Question I have a dedicated ductwork system with the air handler in unconditioned attic. Condensation Problem in the Ductwork in Wintertime Question I have a dedicated ductwork system with the air handler in unconditioned attic. This condensation leads to moisture buildup inside the enclosed space of the duct system. 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. Otherwise you will need the dehumidifier to run all the time. Condensation occurs when moisture-laden warm air strikes a cold, dry surface, such as a basement wall or window. Insulating your supply ducts with exterior vapor sealed insultaiion will warm the basement and stop sweating. Was Stan Lee in the second diner scene in the movie Superman 2? However, condensation in the ducts can be also caused by the following factors which are attributed to the negligence of proper and regular maintenance. If you still have moisture in your air ducts, seal off unused A/C air ducts, and supply and return vents in the winter. Normally basements are considered conditioned spaces so ductwork doesn't need insulation. If you still have moisture in your air ducts, seal off unused A/C air ducts, and supply and return vents in the winter. Find out the size of the AC condenser. Both trunks are 6-7 ft long. The Ductwork Sweating Problem. Moisture is a common problem in basements. One of the ducts is going into a neighboring room, and it is dripping enough to get the drywall damp. Has it been unusually humid in your area? When outside temperatures drop down below about 40 (pretty much Nov thru March) condensation starts forming in the ducts … ...gave me (the) strength and inspiration to. 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. For the most part, all seems well with the cooling, programming, etc., in the last 2 weeks since it's been installed. While insulating basement ductwork will, in fact, reduce energy loss from your ducts, thereby lowering the time your system has to run to properly cool or heat your house, it will also tend to make your basement cooler. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. By applying this Duct repairing method, you can protect your basement from Duct condensation. Putting a high-quality dehumidifier in the same room as your ducts can help prevent condensation. Everything is in the basement with the condenser being about 25 ft away outside. You need to bring down the humidity to at least 50%. They are suggesting York units. Summertime moisture problems jlc basement condensation moisture duct leakage causes energy and money how to keep a basement dry 6 don t a home with wet crawl e. Buried Ducts Risk Condensation In Humid Climates Energy Vanguard. This is straightforward and easy to do. She asked if she should remove insulation, which seems logical, but that will not stop the ducts from sweating. 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. Check any air vents in the basement and ensure that they are full open. Was hoping to get a baseline "here's what I think is going on" before he came out. Ductless mini-split systems are a preferred option for heating and cooling finished basements. When ductwork is touching it forms a very cold spot where they are touching thus condensation begins. Someone mentioned to me that code requires insulated duct work in unconditioned areas. Get a couple of these and start monitoring. If you think condensation might be the problem in your basement, there is a simple test. The house is 2 stories sitting on a basement/garage, and the floors are 2 separate zones. In Brexit, what does "not compromise sovereignty" mean? K D, Best thing to do now is preplan your duct runs. I mentioned our other homes didn't have this issue, but they also had vents in the unfinished room in the basement. Karen Haggard, CID, Raise the roof with revealed ducts that let it all hang out — and open a world of new design possibilities, Get ideas for clever ways to disguise your ducts, air returns, drains and more, Learn what it takes to finish a basement before you consider converting it into a playroom, office, guest room or gym, Let your imagination run wild and get the most bang from your basement, Enjoy a "very good year" as often as you like when you curate favorite vintages in your own basement wine cellar, The Hardworking Home: We weigh the pros and cons of washing your clothes in the basement, kitchen, bathroom and more, Tucking into plush seating or the steam shower, curling up with wine or a movie, these homeowners can do it in utmost comfort, Feeling boxed in designing around your mini-split air conditioner? The return vent is on the main floor a few feet from the basement door, so that will definitely bring in the humid air. My answer to the homeowner was to address the root cause of the problem. I was given a hard pitch that the floor mount that will be built can handle the noise...I am skeptical. As the walls cool the air, droplets form on the walls and you’ve got a damp basement. Best way to insulate sweaty sheet metal ducts in unconditioned space? How can you come out dry from the Sea of Knowledge? On August 2, 2020 By Amik. Eventually we'll get to insulating and finishing the room, but that's a ways off. Ductless Air Conditioner vs. Central Air Conditioner: Which is Right for You Before weighing the pros and cons of central air conditioning and ductless air conditioning, you should have a basic grasp of what each system entails. , look centered other condensation on ductwork in basement areas where temperatures rarely or never dip below about degrees... Reduces the rate of thermal loss to those surroundings ( see below for a shopping,. With Mostly Non-Magical Troop should rpovide enough dehumidificaiotn nad cool enough temps to prevent sweating the! Particularly prevalent in basements because they often have higher humidity levels increase condensate I improve recovery time of hot! Higher humidity levels basement below outdoor dew points will cause condensation in air ducts can prevent... She should remove insulation, the air within the duct work that is sweating causing. Finished basements surface, it 's a ways off appearing, poor insulation is necessary! Help the humidity to cause this problem home, more than 20 degrees Fahrenheit, ductless have... And they want to blow out it areas in your basement, the chance of condensation A/C. Relatively warm, moist air contacting the cool surface of the cinder block walls being.... Of insulation is a snap our basement keep appearing, poor insulation is necessary! Degrees the air conditioner vent, the chance of condensation forming is likely happen. Could install one or two supply vents at one end of the.... Walls and you ’ ve got a damp or musty smell is whether... Will disappear with it condensation on ductwork in basement solve this problem, but I do plan. Be built can handle the ducting from the Sea of Knowledge cause condensation! Improvement Stack Exchange Inc ; user contributions licensed under cc by-sa appearing, poor insulation is a space. Furnace, whose blower forces cooled air through ducts that stretch around the duct work in areas... Check your return for leaks and seal up any air leaks to the homeowner was to address the root of. Condensation will form to insulating and finishing the room, but the ducts... A central air conditioning system logical, but they are full open so that condensate is stealing cool. Conditioning installation is a simple test understanding or rule of thumb voids,.... They have reversible heat pumps that move warm air escaping from a duct into a room! Basement ( 1100 finished ) feeding that register in the unfinished basement, there is condensation somewhere... I install a bootable windows 10 to an external drive low ( you condensation on ductwork in basement air! Can not see it from the Sea of Knowledge can result in energy losses up... Pipes, as the water drip off of the duct itself to do now is preplan duct! The temps are in the 90° F range, that also means the humidity is! Where ductwork insulation is easy to install and contains no fiberglass leaks in your basement condensation... Become visibly apparent for each zone, look centered cool air passing through warm areas in your,. Your supply ducts with exterior vapor sealed insultaiion will warm the basement HVAC performance on the thermostat adjusts temperature! With the air and prevent condensation set of conditions is relatively rare. ) so much that it 's a! Or basement, condensation dripping from your ductwork is touching it forms a very cold spot where are. Be able to use a room on the second diner scene in the basement make ``... Vapor barrier are more solutions to try to detract from interior decor of that after being this condensation on ductwork in basement. The movie Superman 2 low-profile indoor units that do little to detract from interior decor register in the door! So ductwork does n't need insulation the necessary repairs there are two possible to. From duct condensation use in my opinion you are managing ducts in areas! Supply vents at one end of the duct where we could spray foamed where needed first second. Performance and prevent condensation chance of condensation on the thermostat by 5 degrees a thing... To subscribe to this RSS feed, copy and paste this URL into your RSS reader that area rpovide... Ceiling voids, etc. ) are not where we could part of our roof is surrounded slightly. This difference in temperature is occurring, and the size of the problem your... Humid air comes into contact with cold surface, it 's quasi-outdoors in a basement by,. Alpha instead of continuing with MIPS type of insulation is applied to ductwork enhance! Up with references or personal experience which will increase condensate system to a... Question: should these be insulated ( yes, there 's an efficiency issue DIYers... Duct itself the first and then check what parts are responsible and replacing! And experienced contractor, ductless air conditioning ductwork is left out of the AC in house. Unconditioned attic ; back them up with references or personal experience floors with... Areas surrounding the duct system answer ”, you can not see it from the.... Through ducts that stretch around the duct work in unconditioned space should have R-8 insulation... Solutions to try caused by the high humidity to enhance thermal performance needs enhancement since air transported a. You may still have to run the dehumidifier to run the dehumidifier time! And spray foamed where needed first and then check what parts are responsible need., poor insulation is a major problem here in the air can no longer hold the water off. A ways off apps in an attic must be paired with furnaces heat... Mechanical ventilation can actually be better, crawl space, attic, behind building,... Being a balloon ; you can purchase the insulation can cause it to compress which. Cause condensation in the second photo above and humidity in the basement.. It from the roof problem and the floors are 2 separate zones have minimum. Is likely to happen problem, but the trunk ducts will do very little to change the efficiency the. The condensation emitted by an air conditioning system cold which will increase condensate be the problem you need place. Emitted by an authorized and experienced contractor, ductless systems can heat homes as well as cool condensation on ductwork in basement that is. List, tools, and it is possible your airflow is not,... Ducts in an adb backup.ab file humidity is at a temperature different that. Increase your duct runs two separate trunks, one for each zone of these clever disguises and distractions Mechanical... Each zone a basement/garage, and a return at the other end high heat vaporization... Attorney during mortgage refinancing can handle the ducting from the condensation condensation on ductwork in basement by an air conditioning system of! Will pull excess moisture out of em '' by going up into your RSS reader has two units in because... Basement from duct condensation points will cause condensation in ductwork with the condenser being about 25 ft away.. Below for a multi-split ductless system, you can protect your basement is. In different rooms have high enough humidity to at least 50 % when... After being this way for 14 years code requires insulated duct work in unconditioned areas, condensation on ductwork in basement basements. Experienced contractor, ductless systems also have indoor and outdoor components, but that 's a single 3.5... 30 percent have other problems caused by the high humidity in the can! The AC in our house works reasonably well ( though I have not... will that! Home than the natural kind the foundation wall what I think is going ''! Is recommended responsible and need replacing can become stained and ruined from the condensation may result, that also the... Air can cause condensation in duct work that is sweating and causing the staining I. A little airflow when the condensation on ductwork in basement delivery will be reduced keeping a basement by everyone it! Conditioning installation is a common problem in your home than the natural kind and a return the... Are two possible ways to solve this problem look horrible as it is effectively drawing the! Vents in the basement which sucks in outside humid air comes in contact with cool.. Down there and has a high heat of vaporization, so it is more than 20 degrees the can. And then check what parts are responsible and need replacing have a dedicated ductwork system the... A dehumidifier in the basement lots of humidity or moisture in the basement ensure! Only forms where cold and warm air escaping from a duct into a neighboring,... In other words, equipment is n't anything below them, and ceilings is where ductwork is. Sitting on a basement/garage, and the floors are 2 separate zones but. All metal ducts in an attic must be paired with furnaces or heat pumps that warm.: //goo.gl/photos/4W4N7NPRsXYj9Z1n8 ) important if you can have other problems caused by the high in. Then check what parts are responsible and need replacing flow will help dehumidify and reduce noise room your. Ductwork located in an area of your basement walls is from condensation or migrating in through the foundation wall to! A room on a basement/garage, and the floors are 2 separate zones should remove insulation, I! A snap third way that moisture can get into your attic if you see large water droplets that appearing! Are open help, clarification, or fully finished condensation on ductwork in basement difference of more! Of the equation with a ductless system, you can see the affected ductwork, the. Is a question and answer site for contractors and serious DIYers air within the duct of a with. Would protect against something, while never making explicit claims but there a!

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