Heating and cooling information center for home comfort and good health.

HEAT LOSS

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HEAT GAIN

HEAT LOAD WORKSHOP

To familiarize yourself with the principles and techniques of the heat loss calculation procedure, click here.   Likewise, if you want to familiarize yourself with the principles and techniques of the heat gain calculation procedure, click here.  If you have already done so, simply click the link below to continue.

The following forms and calculations apply only to above grade residential buildings with average infiltration.  Unusual items, such as hot tubs, greenhouses or glass areas over 40% of a wall, or indoor swimming pools produce special demands, and are not addressed by this formula.

The heat gain calculates an indoor temperature of 78° with a relative humidity of 55% for outdoor temperatures up to 93°. For outdoor temperatures greater than 93°, it calculates a relative indoor humidity of 55% at a temperature 15° lower than the outdoor temperature.  A 15° maximum temperature difference is recommended for health reasons.

Before continuing, please read the User Agreement by clicking the link at the bottom of the page.  

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