If it was negative 75 degrees outside and the heat failed in a house, how long would it take the inside of that house to get below freezing?

2019-10-28T02:32:05Z

When I was a kid, maybe 10 or so (circa 2002-2003), I was talking about Antarctica with my dad and he said "if your heater broke, you'd die" there. 75 below is a typical temperature in the dead of winter in interior Antarctica. By the way, the house in this scenario is a typical house as would be constructed in the Northern United States (the buildings in Antarctica are probably much better insulated)

2019-10-28T02:32:59Z

Negative 75 degrees Fahrenheit (negative 59 degrees Celsius)

daniel g2019-10-28T18:02:48Z

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Depends on insulation and thermal retention of your house.
Typically, you are talking 60 minutes, less if the wind is blowing.

Anonymous2019-10-29T16:58:48Z

Depends on several factors: How well the house is insulated. How high the ceilings are. How big the house is. How many people are in the house. Whether they are doing any cooking by a method which hasn't failed.

?2019-10-28T17:53:01Z

75 MINUTES AND THAT IS NOT LONG AT ALL

elhigh2019-10-28T12:15:42Z

No way to answer this with the information provided. It could be a few minutes, it could be a few hours.

Needed:

Wind speed outside
Humidity
Total volume of the house's interior
Total mass of all the house's contents
Are the people staying inside?
Total surface area of the entire house including the roof
Total R-value of the roof
Total R-value of walls
Total U-value of windows

Once you have that information you could come up with a solution. As it stands, impossible to say.

?2019-10-28T06:16:53Z

Too many variables to say 'how long'. But I think a safe bet would be less than 24 hours.

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