The system is pre-set to a degree indoor temperature and a degree outdoor temperature. Need help? Call us at An easy-to-use HVAC tool for calculating necessary thermal output capacity in BTUs This tool is based on the square foot method, with computations added for the most important values included, such as insulation, windows, and other contributing factors. How many occupants? Is there a kitchen? Extra device heat wattage W. You must have JavaScript enabled in your browser to use this calculator. This script will not harm your computer and does not log any information about you. You should always consult a licensed design engineer for the most accurate measurements and values, which can only be truly obtained after a thorough inspection of the job site is performed and all related factors are determined.

There can be several other unique factors in certain applications that significantly affect and even falsify these values. We do not take responsibility for or guarantee any completeness, reliability, or accuracy of this information. The recommended BTU loads were determined in good faith and are intended for general informative purposes only. The exact thermal load can be determined by using a full heat load analysis. Square foot methods are considered rule of thumb for use in quick calculations. Note : This tool is provided strictly as a quick method of computing general size and value conditions. Select your region and input the height of the zone as well as the area length times width. This tool is based on the square foot method, with computations added for the most important values included, such as insulation, windows, and other contributing factors.

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