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AC Unit Formula:
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AC unit calculation determines the appropriate cooling capacity needed for a space. The tonnage measurement indicates how much heat an AC unit can remove from a space in one hour, where one ton equals 12,000 BTU per hour.
The calculator uses the simple formula:
Where:
Explanation: This calculation converts BTU rating to tons, which is the standard measurement for air conditioning capacity.
Details: Properly sizing an AC unit is crucial for energy efficiency, comfort, and system longevity. An undersized unit will struggle to cool the space, while an oversized unit will short cycle, reducing efficiency and failing to properly dehumidify.
Tips: Enter the BTU rating of your AC unit. The calculator will convert it to tons. For whole-house sizing, additional factors like square footage, insulation, and climate should be considered.
Q1: What's the difference between BTU and tons?
A: BTU (British Thermal Unit) measures cooling capacity, while tons represent the same capacity in different units (1 ton = 12,000 BTU/hour).
Q2: What size AC unit do I need for my home?
A: As a rough estimate, you need about 20 BTU for each square foot of living space, but many factors affect this including insulation, ceiling height, and climate.
Q3: Can I use this for mini-split systems?
A: Yes, this calculation works for any type of air conditioning system as long as you know the BTU rating.
Q4: What if my calculation gives a decimal result?
A: AC units come in standard sizes (1.5, 2, 2.5, 3, 3.5, 4, 5 tons). Round to the nearest standard size when selecting equipment.
Q5: Are there other factors to consider beyond BTU?
A: Yes, SEER rating (efficiency), type of refrigerant, features, and proper installation are all important considerations when selecting an AC unit.