空调匹数计算器
根据房间面积计算所需的空调制冷量和匹数。
sq ft
Recommended BTU
7,000 BTU
In Tons0.58 tons
Recommended BTU vs Room Area
公式
How to Size an Air Conditioner
The general rule is 20 BTU per square foot. Adjust for sun exposure and occupancy.
Formula
Base BTU = Room Sq Ft x 20
Adjustments: +600 BTU per person over 2, +10% for sunny rooms, -10% for shaded.
1 ton = 12,000 BTU.
计算示例
350 sq ft room, average sun, 2 occupants.
- 01Base BTU = 350 x 20 = 7,000
- 02Occupant adjustment = 0 (2 or fewer)
- 03Sun factor = 1.0 (average)
- 04Recommended BTU = 7,000 x 1.0 = 7,000 BTU
- 05In tons = 7,000 / 12,000 = 0.58 tons
常见问题
What happens if the AC is too small?
An undersized AC will run constantly, struggle to cool the room, waste energy, and may not reach the desired temperature on hot days.
What happens if the AC is too large?
An oversized AC will cool too quickly without removing humidity, causing a cold and clammy feel. It also cycles on/off frequently, reducing efficiency and lifespan.
Do I need to adjust for kitchen use?
Yes, if the AC cools a kitchen area, add 4,000 BTU to account for heat from cooking appliances.
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