Older Home (Drafty) · Up to 600 ft²
Mild Climate
BTU & Cost Estimate
BTU Required
18,975
BTU/hr
AC Tonnage
1.75
1 ton = 12,000 BTU/hr
Installation Cost
$6,125 - $10,500
USD
How we calculate
Base area (600 ft²) × BTU per sq ft (25)15,000 BTU
× Load Factor (1.15)17,250 BTU
+ Safety Margin (10%)18,975 BTU
Final BTU Estimate18,975 BTU → 1.75 Ton