I live in montreal and had a lennox air conditioner and ducts installed in the attic.
Air condtions ducts in attic wet.
Flooded wet or iced air ducts causes cures for wet or corroded air conditioning duct work.
Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.
Condensation forms when warm humid air comes into contact with a colder surface like your air conditioner s ductwork.
There are 3 common culprits of this problem.
This colder surface then chills the surrounding air to a temperature below it s dew point which causes the water vapor to condense into a liquid just like on the outside of a glass of iced teas sitting outside on a hot day.
The air ducts for a central hvac systems are typically located above a home in the attic or upper crawl space or underneath a home in the space between the foundation and the floor so.
If your ductwork isn t well insulated then it will be the temperature of the air passing through it so when your air conditioning is on cool air makes the metal ductwork cold.
Item 1790033 model 1790033.
The unconditioned space also houses his hvac system.
The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago.
If you live in a consistently humid climate a dehumidifier can help keep the air.
Not enough insulation on the ducts themselves.
And then it drips down onto your ceiling creating nasty water marks.
If ducts are located in a crawlspace underneath your house cover the soil to reduce moisture.
What i ve observed attic temp 50c vent temp 21c attic temp 37c vent temp 18c attic temp 25c vent temp 13c not sure what the r value off flexible duct or main metal duct is.
If you have central heating and or air conditioning in your home the warm or cool air is delivered to each room through a system of connected ducts and vents.
If they are located in your attic be sure the area is properly insulated and any cracks or holes are sealed.
The same thing can happen with your ac system and vents.
Poorly insulated or uninsulated ducts and humid air coming in contact with cool ductwork.
The photo at page top shows a very rusty air conditioning ductwork register and a careful look into that system of metal duct work found additional heavy rust in the duct system along with lots of debris.
Basically when the cold air from your air conditioner mixes with the warm moist air in your attic condensation happens.
Keep ducts spaced apart so air can flow between them.
There are essentially two reasons by ductwork sweats.
The difference between the cold air in the ducts and warm air in the walls can cause moisture to condense on the ducts giving mold a perfect environment to grow.
