Best AC Size for 15x18 Room
270 sq ft — Recommended: 0.5 Ton (7,350 BTU)
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AC Recommendation for 15x18 Room
Room Size
270 sq ft
Recommended
0.5 Ton
BTU Required
7,350
Window AC or small split AC
Factors to Consider:
- Add 10% for kitchens or rooms with lots of electronics
- Add 15% for rooms with high ceilings (above 10 feet)
- Add 10% for west-facing windows with direct sunlight
- Consider inverter AC for 25-40% energy savings
Room Details
Enter your room specifications
ft
ft
ft
Additional Factors
Recommended AC Size
Based on your room specifications
Frequently Asked Questions
What AC size do I need for a 15x18 room?▼
For a 15x18 room (270 sq ft), we recommend a 0.5 Ton AC with 7,350 BTU capacity.
How many BTU for a 270 sq ft room?▼
A 270 sq ft room typically needs 7,350 BTU of cooling capacity. This is equivalent to 0.5 Ton of cooling.
Can I use a smaller AC for my 15x18 room?▼
While a smaller AC might cool the room eventually, it will run constantly, use more electricity, and may not adequately dehumidify.
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