What is "Stack Effect" and How Does It Cause Heat Loss from the Bowditch House in the Winter?
Infiltration of cold air happens primarily in the basement. Look out for large bypasses like a bulkhead door, but also wire and plumbing penetrations through the sill or rim joist.
Exfiltration of warm air happens mostly at the attic floor. This photo shows the walk-up hatch to the attic at the Bowditch House, which is a major bypass for warm air to escape.
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