Condensation In Attic Ductwork

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Will You Have Condensation On The Hvac Flex Tubing In My Attic Duct Work Hvac Hvac Ductwork

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This Plenum Was Not Insulated In The Hot Attic And Condensation Was Dripping Down Into The Closet Below All Ductwork Should B Duct Work Attic Home Inspection

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Flexible Air Duct Replacement With Round Sheet Metal Duct Air Duct Insulation Air Duct Attic Renovation

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How To Win The Battle With Condensation Freedomvans Attic Ventilation Blown In Insulation Attic Insulation

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Locating Air Leaks 8 Attic Duct Sealing Heating Air Conditioning Duct Insulation Diy Home Improvement

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Even though the air conditioning equipment appears to be operating normally humidity inside the house is between 60 and 65 and return ducts located in the attic show significant condensation.

Condensation in attic ductwork.

Dripping condensation may also lead to a ceiling leak which not only looks bad but also rots drywall and can cause your ceiling to collapse over time. 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 forms when warm moist air comes into contact with cool surfaces. All you need is a sag in the line or a level area and water will accumulate.

The colder the air the more likely it is that water will condense. The air in your vented attic is hot and humid just like all outdoor air in florida. As the humidity level rises outdoors condensation will gradually begin to form on the surface of your air conditioning ducts. It s a natural process and similar to the way a chilled soda begins to sweat once you take it out of the refrigerator on a hot day.

Moisture goes right through the fiberglass insulation and condenses on the inner liner drips on ceiling below after building up. Vapor barrier on the attic side of the duct s insulation is compromised. Ductwork located in an attic must be hung properly so that the insulation can do its job. Let s say your ductwork is in your attic.

If not condensation will form in the ducts when the heat hits the cold duct. 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 beer. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. Condensation forms when warm humid air comes into contact with a colder surface like your air conditioner s ductwork.

I called out the original hvac company and they took a look and said they saw no water. It was new when the ac was put in 7 years ago. The 1 746 square foot house has r 19 insulation between the rafters and between r 15 and r 20 of rigid foam above the roof sheathing. The attic ductwork is flex duct work.

The colder the air is inside the duct the greater the chance of ductwork sweating. Also whenever you cook and especially when you take a shower this will dump additional moisture into the attic ducts. When ductwork is touching it forms a very cold spot where they are touching thus condensation begins. During periods of high humidity and high temperatures the conditions are ideal for condensation to form on improperly insulated ductwork in your home s attic.

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Condensation On Ductwork How To Fix Sweating Ducts Duct Work Duct Insulation Ducted Air Conditioning

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