HVAC Sizing vs Window Heat Loss — Home Efficiency

Compare HVAC capacity requirements and window heat loss. Understand how insulation affects your heating and cooling needs.

BTU Calculator

พื้นที่พื้น (m²)

Ceiling Height (m)

Climate

Window Width (m)

Window Height (m)

U-value (W/m²·K)

Temperature Diff ΔT (°C)

U-value: Single glazing ≈ 5.7 · Double ≈ 2.8 · Triple ≈ 0.8

พื้นที่ (m²)

1.80

Heat Loss (W)

100.8

Annual Cost (est.)

$65.32

Annual Heating Energy (kWh)

435.5 kWh

คุณสมบัติ	BTU Calculator	Window Heat Loss
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หน้าเต็ม	BTU Calculator	Window Heat Loss