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Roughly 36,000 BTU, but there are too many variables unknown to give an accurate estimate. Cubic feet, window and door area, insulation rating, climate zone, degree cooling days, directional orientation of dwelling/office/apartment, etc. and type of occupancy.

See: www.aircon4u.net/www.aircon4u.net/air-conditioning-cooling-calculator.php

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12y ago
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Q: How many BTUs does it take to cool 800 square feet?
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