Older Home (Drafty) · 900–1,200 ft²
Mild Climate
BTU & Cost Estimate
BTU Required
37,950
BTU/hr
AC Tonnage
3.25
1 ton = 12,000 BTU/hr
Installation Cost
$11,375 - $19,500
USD
How we calculate
Base area (1,200 ft²) × BTU per sq ft (25)30,000 BTU
× Load Factor (1.15)34,500 BTU
+ Safety Margin (10%)37,950 BTU
Final BTU Estimate37,950 BTU → 3.25 Ton