How much does a Window AC weigh?
A window AC weighs 50 – 70 pounds on average. But window AC weight depends heavily on output. More powerful units can weigh up to 130 lbs while low-capacity units can be as light as 35 pounds
The reason why there’s such a strong relationship between output and weight is that a window AC needs more refrigerant in order to cool faster. More refrigerant means larger coils and a bigger, more powerful compressor to drive the system.
Making all those components more powerful means a much heavier window AC. Here’s a table to give you an indication of the relationship between window AC output and weight.
| Cooling Capacity (BTUs) | Weight Range | Average Weight |
| 5,000 BTU | 35 – 45 lbs | 40 lbs |
| 6,000 BTU | 40 – 50lbs | 45 lbs |
| 8,000 BTU | 50 – 70lbs | 60 lbs |
| 10,000 BTU | 55 – 75 lbs | 65 lbs |
| 12,000 BTU | 65 – 85lbs | 75 lbs |
| 15,000 BTU | 80 – 100 lbs | 90 lbs |
| 18,000 BTU | 100 – 130 lbs | 115 lbs |
| 25,000 BTU | 130 – 170 lbs | 150 lbs |
The output measurements in this table are represented in BTUs (British Thermal Units). A BTU is a unit of thermal energy equal to the amount needed to change the temperature of one kilogram of water by 1 degree Fahrenheit.
All window AC units will have a cooling capacity displayed in BTUs. How many BTUs you need will be determined by the size of your property as well as the climate and your building’s insulation.
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Mark is a journalist who has written about home products for two years. He holds a masters degree with distinction from the London School of Economics and an undergraduate degree from the University of Edinburgh.