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ANSI/ASHRAE 40-2025
Methods of Testing for Rating Heat-Operated Unitary Air-Conditioning and Heat Pump Equipment
Provides test methods for determining the heating and cooling output capacities and energy inputs of unitary air-conditioning and heat-pump equipment that is heat-operated (see Section 3, “Definitions”). These test methods may be used as a basis for rating such equipment, but it is not the purpose of this standard to specify methods of establishing ratings. Dual units of measurement
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American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]