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ANSI/ASHRAE 194-2025
Method of Test for Direct-Expansion Ground-Source Heat Pumps
Provides test procedures for rating factory-made residential, commercial, and industrial direct-expansion (DX) ground-source heat pumps (GSHPs), as defined in Section 3. This standard addresses heat-pump capacity ranges of 3.5 through 52.8 kW (12,000 through 180,000 Btu/h) and all standard voltage and frequency ratings. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]