Older Home (Drafty) · 600–900 ft²
Mild Climate
BTU & Cost Estimate
BTU Required
28,463
BTU/hr
AC Tonnage
2.5
1 ton = 12,000 BTU/hr
Installation Cost
$8,750 - $15,000
USD
How we calculate
Base area (900 ft²) × BTU per sq ft (25)22,500 BTU
× Load Factor (1.15)25,875 BTU
+ Safety Margin (10%)28,463 BTU
Final BTU Estimate28,463 BTU → 2.5 Ton