Closed Envelope
Building Benefits With an Unvented Attic System
• Air handler and ductwork are kept in sealed, conditioned space. The equipment is protected from damaging heat, weather, and vermin.
• Air equipment in hot attics “sweats” introducing moisture to the attic insulation. In an unvented attic, the equipment is sheltered from the condensation causing heat.
• Healthier indoor air quality. Air is mechanically vented into tightly sealed house, dehumidified, and filtered before you breathe it in.
• Lower electric bills = long term savings.
• A smaller size air conditioner is needed when the house is not leaky.
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