How To Seal Air Handler Plenum In Attic

Moreover the excess moisture can lead to a damaged plenum mold or termites.

How to seal air handler plenum in attic.

Aluminum tape and mastic can be found at well stocked hardware stores or through amazon. The air in your vented attic is hot and humid just like all outdoor air in florida. I asked them to seal the refrigerant line and all they did was to put. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.

If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the. I had them seal all of the inlets to the air handler the supply and return plenums all the attic holes. 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. The grille in the photo on the left brings air into a return air plenum under an air handler platform.

However air handler sweating is different. Learn how to seal yo. Energy saver first look into the attic when helping improve a home s ene. Create or modify an air sealed closet to contain the air handler and the return air plenum.

For repairing simple leaks in the air ducts. 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. I missed out on giving specific instructions on one part and they messed it up. 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 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. Using a duct sealant called mastic is the professionals choice. 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.

Condensation on the outside of your air handler can be an effect of an underlying issue. There are two main ways to solve this problem. I even had them open the air handler and seal inside following manufacturer s guideline. 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.