Older Home (Drafty) · Up to 600 ft²
Cold Climate
BTU & Cost Estimate
BTU Required
26,565
BTU/hr
AC Tonnage
2.25
1 ton = 12,000 BTU/hr
Installation Cost
$7,875 - $13,500
USD
How we calculate
Base area (600 ft²) × BTU per sq ft (35)21,000 BTU
× Load Factor (1.15)24,150 BTU
+ Safety Margin (10%)26,565 BTU
Final BTU Estimate26,565 BTU → 2.25 Ton