Air Conditioner Size Calculator
Find the ideal air conditioner size for your room. Enter your room dimensions and other factors to determine the best AC size in BTUs.
Room and AC Details
List of the Top 10 Best Air Conditioner:
Understanding Air Conditioner Sizing
Choosing the right air conditioner size is crucial for efficient cooling and energy savings. An undersized AC will struggle to cool the room, while an oversized AC will cycle on and off too frequently, wasting energy.
How to Calculate AC Size
The size of an air conditioner is measured in BTUs (British Thermal Units). Here's how to calculate the required BTUs for your room:
| Factor | Adjustment |
|---|---|
| Base Calculation | 20 BTUs per square foot |
| Ceiling Height | Increase by 25% for ceilings over 8 feet |
| Sunlight Exposure | Increase by 10% for moderate sunlight, 20% for high sunlight |
| Occupants | Add 600 BTUs per person |
Common AC Sizes
Here are some standard AC sizes and their typical applications:
| BTUs | Room Size (square feet) | Typical Use |
|---|---|---|
| 5,000 | 100 - 150 | Small rooms or offices |
| 8,000 | 150 - 250 | Medium-sized bedrooms |
| 12,000 | 250 - 400 | Living rooms or large bedrooms |
| 18,000 | 400 - 600 | Large living rooms or open spaces |
Frequently Asked Questions
What happens if I choose the wrong AC size?
An undersized AC will struggle to cool the room, while an oversized AC will cycle on and off too frequently, leading to inefficiency and higher energy bills.
How do I measure my room for an AC?
Measure the length and width of your room in feet, then multiply them to get the area in square feet. Don't forget to measure the ceiling height as well.
Can I use this calculator for central air conditioning?
This calculator is designed for room air conditioners. For central air conditioning, consult an HVAC professional for accurate sizing.
What is the difference between BTUs and tons?
BTUs measure cooling capacity, while tons are a unit of cooling power (1 ton = 12,000 BTUs). Both are used to describe AC size.