Older Home (Drafty) · 900–1,200 ft²
Cold Climate
BTU & Cost Estimate
BTU Required
53,130
BTU/hr
AC Tonnage
4.5
1 ton = 12,000 BTU/hr
Installation Cost
$15,750 - $27,000
USD
How we calculate
Base area (1,200 ft²) × BTU per sq ft (35)42,000 BTU
× Load Factor (1.15)48,300 BTU
+ Safety Margin (10%)53,130 BTU
Final BTU Estimate53,130 BTU → 4.5 Ton