EquipmentUp to date · Jan 15, 2026
Whole-House Fan
A large fan installed in the ceiling/attic that pulls cool evening air through open windows and exhausts hot air from the attic. Can reduce air conditioning use by 50-90% in dry climates.
Why It Matters
In climates with cool evenings (most of the Western US), a whole-house fan costs $300-700 installed and can eliminate AC use for much of the year.
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