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Heating and Cooling are the BTU's Measured in a different way?

Heating and Cooling are the BTU's Measured in a different way?


  #1  
Old 03-31-15, 03:01 AM
CircuitBreaker's Avatar
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Heating and Cooling are the BTU's Measured in a different way?

I have always wondered if heating and cooling BTU's are measured in a different way. I know the obvious one is cold and one is hot but why is the heating always a way higher number the the cooling?
I have a Frigidaire Window AC unit that could have had a heating option (I believe electric resistance heater and not a heat pump) while the cooling BTU is 8,000 the heating would have been 9,500 BTU

Thanks
 
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Old 03-31-15, 08:26 AM
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A BTU is a BTU. There is heat and less heat, technically there is no cooling. Cooling is just less heat. Aside from that, in your application of a window A-C unit with electric heat, the cooling BTUs are less because you are changing the temperature usually at most about 30 degrees; think 100 degrees outside temperature and a setpoint of 70 degrees. When heating you need more BTU capacity because you may be trying to raise the temperature as much as 70 degrees or more. Think 0 degrees outside temperature and a 70 degree setpoint.
 
 

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