A/C Costs of opening front door for 10 seconds?

I am wondering the average cost of walking through the front door of a house while the air conditioner is running. 


-Door is fully open for 10 seconds

-A/C is set to 72 degrees F

-Outside temperature is 80 degrees F

-Philly area

-No wind

I found this site which has a calculator, but not sure if I am using it right. 


What about a heater during the winter.

-A/C is set to 72 degrees F

-Outside temperature is 30 degrees F

-No wind

2 Answers

  • 6 months ago

    ABOUT 1 CENT !!!!

  • 6 months ago

    That calculator is not designed to answer the question you are asking. I don't know what data you put into the calculator or what answer you got but based on the calculator you should have gotten zero as the answer. Common sense says the answer is so small to be insignificant 

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