Air Ducts In Attic

All the ducts are in the attic.

Air ducts in attic.

Why installing ductwork in the attic above an in law suite is necessary ductwork is necessary for an in law suite because without it there s no way for the air that s warmed or cooled by your furnace or air conditioner to reach that space. The air ducts for a central hvac system are typically located above a home in the attic or upper crawl space or underneath a home in the space between the foundation and the floor so you don t see them unless you have cause to replace them. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. Comparing this configuration to a solar water heater they make the case that putting air conditioning ducts in a hot attic is an effective way to heat up the conditioned air as it travels from the air handler to the conditioned space inside the home.

The usual method of venting an attic is referred to as passive ventilation meaning air is drawn through the soffits and out the roof vents without any mechanical means. The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load. Looking at the cooling side only the additional load would be. R 8 duct insulation 5 227 btu hour.

The roof is vented by simple holes cut through the sheathing and protected with vent caps or by continuous ridge vents. According to rightsuite the software we use the supply ducts have about 560 square feet of surface area and the return ducts 101 square feet. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. If there are holes or faulty ductwork your hvac unit has to work overtime to compensate.