BTU Calculator Room Size & BTU Size Calculator Calculating the perfect air-conditioner size (BTU size – British Thermal Unit) required for all rooms and offices. Room / Office Size: Room / Office Length: meters Room / Office Width: meters ——————— Enter values above… Room / Office Characteristics: Please select ONE element of the room / office to consider when calculating the perfect sized air-conditioner: Large or oversized windows with direct sunlight Wide open spaces to other rooms, offices or bathroom Floor to Ceiling height more than 3 meters Extremely hot/cold in season None of the above Calculated Results: Perfect Size Air-Conditioner = BTU
