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AC BTU Calculator
Calculate the Cooling Capacity (BTUs) required for any room size.
Key Features
- Sunlight exposure factor
- Person count adjustment
- Kitchen heat allowance
How to Use
Input room dimensions, insulation quality, and window exposure to find the right AC unit size.
Interactive AC BTU Calculator
Calculation Formula & Logic
Base BTUs = Area × 20. Adjust for ceiling height (+12.5% per ft above 8ft), sunny windows (+10%), or kitchen appliances (+4,000 BTUs).
*Calculations represent industry standard metrics used by licensed design consultants and construction specialists. Always incorporate structural layout constraints and material margins.
Expert Pro-Tips
- ✓Place window air conditioners away from direct sunlight to improve efficiency and lifespan.
- ✓Clean or replace your AC filters monthly to maintain maximum airflow and cooling power.
- ✓Add 600 BTUs of cooling capacity for every additional occupant in the room beyond two people.
Frequently Asked Questions
Q: How do I size an air conditioner for my room?
A: Calculate the square footage of the room, multiply by 20 to get base BTUs, then adjust upward for high ceilings, sunny windows, or kitchen heat.
Q: What happens if my air conditioner is too large for the room?
A: An oversized AC unit will cool the room too quickly without dehumidifying it, leading to a cold, damp, and uncomfortable environment.