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When should Aerosealing be used and when is manual ductwork sealing recommended?

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Manual ductwork should be used:
  • Within the first 3 feet of the air handler, furnace or package unit
  • Gaps larger than 5/8".  An energy auditor will be able to identify larger holes with a blower door test.  It is typically not a good idea to rely on the Aeroseal technicians to find the larger holes since they typically just "blow and go."
  • When the ductwork is 100% accessible. 
  • Manual ductwork sealing can be applied thicker, which is better than the thin coat of glue Aeroseal leaves.

Aeroseal the ductwork should be used:
  • When the ductwork is not accessible for rectangular sheet metal ductwork in attics, walls and crawlspaces.
  • The the ductwork travels between floor cavities and is inaccessible.
  • The ductwork travels to an inaccessible part of the house (just because a large or inexperienced technician can't reach an area in the attic, does not mean it is inaccessible).
  • The ductwork is extensively wrapped in metal wires and insulation.

How Much Does Aeroseal Cost

Questions For Ask Aeroseal Dealers

Aeroseal vs. Manual Duct Seal

Alternatives to Aeroseal

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