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Thread: Do power attic fans help?
06-14-2009, 04:55 PM #10
For much residential construction, the largest contributors to heat gain into the structure (which determines the quantity and capacity of cooling needed to keep the interior comfortable) are windows and infiltration (leakage). A nominally insulated attic floor will keep heat gain from the attic to the interior below the percentages gained through single pane windows (particularly unshaded windows) and infiltration, Airtight, well-insulated ducts that run through the attic will assure the a/c system delivers more of its actual cooling output to the rooms vs. being lost to the attic via air leaks and heat gain into the ducts from the hot attic air and surfaces."In this house we obey the laws of thermodynamics!"
- Homer Simpson