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All current amendments available at time of purchase are included with the purchase of this document.
 

Document History

  1. BS ISO 21978:2023

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    Air to water heat pumps. Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating

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  2. BS ISO 21978:2021


    Heat pump water heater. Testing and rating at part load conditions and calculation of seasonal coefficient of performance for space heating

    • Historical Version