免费HVAC热量计算器
计算任何房间的供暖和制冷所需BTU值，免费暖通空调计算器。
sq ft
ft
Recommended BTU
6,000
AC Tonnage0.5
Recommended BTU vs Room Size
公式
BTU Calculation
Base BTU = Square Footage × 20
Adjustments:
1 ton of AC = 12,000 BTU
计算示例
300 sq ft room, 8ft ceiling, average sun, 2 occupants.
- 01Base BTU = 300 × 20 = 6,000
- 02Ceiling factor = 1.0 (standard height)
- 03Sun factor = 1.0 (average)
- 04Occupant BTU = 0 (2 is baseline)
- 05Total = 6,000 BTU
- 06Tonnage = 6,000 / 12,000 = 0.5 ton
常见问题
What if I have a kitchen?
Add 4,000 BTU for a kitchen due to heat from cooking appliances.
What about insulation?
Poorly insulated rooms may need 20-30% more BTU. Well-insulated rooms may need 10% less.
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