Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.
How to seal air handler plenum in attic.
I missed out on giving specific instructions on one part and they messed it up.
The grille in the photo on the left brings air into a return air plenum under an air handler platform.
I asked them to seal the refrigerant line and all they did was to put.
However air handler sweating is different.
Air sealing your ducts is cheap and easy and it save s a lot of money.
Use aluminum tape to seal joins between two flat smooth surfaces usually metal and mastic for irregular surfaces such as wood.
There are two main ways to solve this problem.
Learn how to seal yo.
Create or modify an air sealed closet to contain the air handler and the return air plenum.
When working with mastic wear disposable gloves and spread it carefully since its glueyness makes cleanup difficult.
There are many different ways to seal this crawlspace including plastic sheeting the application of foam insulation to the foundation walls on the inside of the crawlspace and more.
As shown in the infrared image on the right the plenum is not air sealed so hot attic air is being pulled into the air handler closet.
I had them seal all of the inlets to the air handler the supply and return plenums all the attic holes.
When you re done sealing your attic bypasses push the insulation back into place with an old broom handle or stick as you back out of the attic.
Moreover the excess moisture can lead to a damaged plenum mold or termites.
Aluminum tape and mastic can be found at well stocked hardware stores or through amazon.
I even had them open the air handler and seal inside following manufacturer s guideline.
For repairing simple leaks in the air ducts.
Condensation on the outside of your air handler can be an effect of an underlying issue.
Make sure that all metal fittings are firmly screwed together on four sides then covered with liquid or tape mastic and fully re insulated.
The air in your vented attic is hot and humid just like all outdoor air in florida.
Otherwise in the summer months the warm air that is under your home will rise up through the floors and cause your air handler to sweat.
Energy saver first look into the attic when helping improve a home s ene.
Using a duct sealant called mastic is the professionals choice.
