❄️ AC Size Calculator
Enter your room dimensions to find the ideal air conditioner size for your space in Ghana.
This calculator is calibrated for Ghana's tropical climate and heat conditions.
How to Choose the Right AC Size
Air conditioner capacity is measured in BTU/hr (British Thermal Units per hour) or HP (Horsepower). A higher rating means the unit can cool a larger space.
Common AC sizes in Ghana: 1 HP (~9,000 BTU), 1.5 HP (~12,000 BTU), 2 HP (~18,000 BTU), 2.5 HP (~24,000 BTU), 3 HP (~30,000 BTU).
Always round up to the nearest available size — an undersized AC will run continuously, struggle to cool the room, and wear out faster.
Ceiling height matters: a room with a high ceiling holds significantly more air volume and requires more cooling power than the floor area alone suggests.
Frequently Asked Questions
What HP AC do I need for a bedroom?
A standard Ghanaian bedroom (3×3m to 4×4m) typically needs a 1 HP to 1.5 HP air conditioner. Use the calculator above with your exact dimensions for a precise recommendation.
Is 1 HP enough for a 12×12 room?
A 12×12 ft (roughly 3.6×3.6m) room needs approximately 9,700 BTU. A 1 HP unit (~9,000 BTU) will be slightly under — we recommend a 1.5 HP for comfortable cooling in Ghana's heat.
What's the difference between BTU and HP?
They measure the same thing — cooling capacity. BTU/hr is the international standard; HP is commonly used in West Africa and Asia. 1 HP ≈ 9,000 BTU/hr.
Does ceiling height really matter?
Yes. A room with a 3m ceiling has 25% more air volume than the same floor area with a 2.4m ceiling. More volume = more cooling required. Always factor in ceiling height for accuracy.
Should I buy a bigger AC just to be safe?
Not too big. An oversized AC will cool the room quickly but won't run long enough to remove humidity — leaving the room feeling cold but clammy. Stick to the recommended size or one step up at most.
Which AC type is best for a home in Ghana?
Wall-mounted split ACs are the most popular and energy-efficient choice for Ghanaian homes. Floor-standing units suit large open spaces, while portable ACs are good for renters who can't install a permanent unit.