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This guide provides an aid that will make it easier to apply the heating, ventilation, and air conditioning (HVAC) control requirements found in building energy codes and addresses requirements defined by 2009 and 2012 editions of the International Energy Conservation Code (IECC) and ASHRAE Standard 90.1-2007 and ASHRAE Standard 90.1-2010.

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The Building Energy Codes 101 family of products provide a basic introduction to the varied and complex issues associated with building energy codes.

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The Building Energy Codes 101 family of products provide a basic introduction to the varied and complex issues associated with building energy codes.

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The Building Energy Codes 101 family of products provide a basic introduction to the varied and complex issues associated with building energy codes.

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The Building Energy Codes 101 family of products provide a basic introduction to the varied and complex issues associated with building energy codes.

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The Building Energy Codes 101 family of products provide a basic introduction to the varied and complex issues associated with building energy codes.

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EnergyPlus TMY3 weather file for climate location associated with the Manufactured Housing Prototype Building Models.

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Total System Performance Ratio (TSPR) is a metric for evaluating overall system efficiency instead of individual component efficiency, a solution that could also eventually facilitate the transition to a 100% performance-based code structure. TSPR is a ratio that compares the annual heating and cooling load of a building to the annual energy consumed by the building's HVAC system. This technical documentation provides background on the TSPR and support for the mechanical performance factors that are developed each 90.1 edition cycle to be used in the calculation. The current factors are developed for the 2022 edition of 90.1 in combination with addendum AG.