How to Repair Air Conditioning Ducts

Save

Loose ducts leak air, causing the home to not cool as quickly. As a result, the homeowner will usually run the air conditioning longer, increasing cooling bills. Most damagingly, dust and other contaminants can leak into the duct work, causing illness and allergies and shortening the life of the air conditioning. Fortunately, if you can get to your ducts, you can fix them.

Things You'll Need

  • Mastic sealant
  • Mastic tape
  • Paintbrush
  • Look at the damage to the duct. Solid ducts rarely get punctured in the middle, but they can get loose where they join other sections. Flexible ducts can also come loose, or they can develop small tears. If the duct is loose, push it onto the connection.

  • Clean the area with with a damp cloth or paper towel. It does not have to be spotless, but you will get a better seal if it is not too dirty.

  • Apply water-based mastic sealant to the gap or tear with a brush. Apply it liberally to cover the whole gap. Give it about 10 minutes to start to cure.

  • Cover the patch with mastic tape. The tape should completely cover the mastic sealant and overlap with the bare duct as well.

  • Wait a couple of hours for the patch to cure. Then turn on the air conditioning. Move your hand around the patch to feel for air. If you did the patch right, there should be not air leaking out.

Related Searches

Promoted By Zergnet

Comments

You May Also Like

  • How to Replace Ductwork

    Replacing the ductwork in a house is a tough job whether it is located under the house or in the attic. Even...

  • How to Seal Leaking Air Conditioning Duct

    Leaking air conditioning ducts waste energy and cause high utility bills. Rather than spending an excessive amount on utilities or immediately calling...

  • How to Fix Duct Work Under a House

    Duct work must be clean and leak-free for proper operation. Insulated duct work keeps the cool air cool and the hot air...

  • How to Repair Flex Duct Work

    Flex ductwork allows you to make complex twists, bends and angles in your ductwork. Its main use is the final connection from...

  • How to Repair Holes in HVAC Ducts

    An HVAC system relies on the pressurization of the ductwork to move air throughout your home. A hole in the ductwork does...

  • How to Repair a Heating Duct

    Accidents may cause damage to your heating ducts. This is especially common in basements where the heating ducts run below the floor...

  • How to Replace Old Duct Work

    While ductwork is not often thought of as something that needs replacing, there are good reasons as to why it may need...

  • Materials for an Air Conditioning Duct

    Without HVAC systems, houses and buildings would feel like frigid iceboxes or huge ovens depending on the season. The air conditioning ducts...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!