What size air conditioner do I need for my room?
Estimate2026 figuresFreeNo sign-up
Example: change the values to see your own case
Recommended unit
9,000 BTU (2.6 kW)
| Your room needs | 7,795 BTU |
| In kW | 2.28 kW |
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How we calculated it
About 100 W per m², adjusted for sun, ceiling height, insulation and people, then rounded up to the next commercial size.
For several rooms or a large home, ask an installer to do the calculation.
Frequently asked questions
How many BTU for 20 m²?
Usually a 9000 BTU unit, but it depends on sun, insulation and ceiling height.
How many BTU is 1 kW?
About 3412 BTU per hour.