Air conditioner size calculator
Estimate the split AC size for a room in BTU, frigorías, and kW from area, ceiling height, sun, and occupancy.
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Tool guide
Air conditioner size calculator: how it works
Practical information to understand the result and use this tool correctly.
About Air conditioner size calculator
This is a room-size estimate for a single split, not a Manual J load calculation. It starts from floor area and ceiling height, then adjusts for sun, insulation, windows, extra people, and a kitchen.
Frigorías/h are the unit often printed on equipment in Argentina and other Spanish-speaking markets. BTU/h and kW are shown from the same estimate so you can match a label in either system.
How to use it
- 1Measure the room in meters and set the ceiling height.
- 2Choose sun, insulation, windows, people, and whether the room is a kitchen.
- 3Read the estimated load and the next common split size, rounded up.
Frequently asked questions
- Is this a professional cooling load?
- No. It is a practical sizing estimate. Odd layouts, lots of glass, or a very hot climate still need a technician.
- Why round up to a catalog size?
- Splits are sold in steps such as 9,000, 12,000, 18,000, and 24,000 BTU/h. The suggestion is the smallest common size that covers the estimate.
- Are the measurements uploaded?
- No. The estimate runs locally in the browser.