Older Home (Drafty) · 600–900 ft²
Cool Climate
BTU & Cost Estimate
BTU Required
34,155
BTU/hr
AC Tonnage
3
1 ton = 12,000 BTU/hr
Installation Cost
$10,500 - $18,000
USD
How we calculate
Base area (900 ft²) × BTU per sq ft (30)27,000 BTU
× Load Factor (1.15)31,050 BTU
+ Safety Margin (10%)34,155 BTU
Final BTU Estimate34,155 BTU → 3 Ton