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In extremely cold weather conditions where the inside thermostat is set to 27 C

ID: 2224054 • Letter: I

Question

In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, your 1200 square ft house might lose heat through the walls at a rate of 3500 W. An even more efficient system is a geothermal air conditioner, where the heat pump runs between the inside temperature (27 C) and pipes which are buried underground below the frost line where the temperature is always 59 F or 15 C. How much would it cost to heat your house for one weak using such a geothermal system?

Explanation / Answer

www.myfoxphilly.com/story/20635016/code-blue-cold-weather