Source: http://www.thriftyfun.com/tf815040.tip.html

What is a Design Heating Load?

The amount of heated air, or heating capacity, to be supplied by a heating system; usually the maximum amount to be delivered based on a specified number of heating degree days or design outside temperature.

U.S. Department of Energy

Source: http://www.thriftyfun.com/tf815040.tip.html

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