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The correct formula is 1 watt = 3.41 btuh this from a twenty year A/C guy. Or try 85 square feet floor space= approx. 12,000 btuh. Good Luck
Heat Load Calculation
The correct formula is 1 watt = 3.41 btuh this from a twenty year A/C guy. Or try 85 square feet floor space= approx. 12,000 btuh. Good Luck