Last edited 05 Jul 2021

Main author

BSRIA Institute / association Website


The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017), by David Bleicher, published by BSRIA in 2017, states: ‘A compensator regulates the operating temperature of a heating system in response to the outside air temperature in order to maximise energy efficiency. As the temperature outside increases, the compensator sends a signal to a motorised valve, which lowers the hot water flow temperature which in turn reduces system heat output. When the temperature outside drops, the flow temperate is increased accordingly. More complex compensators are available that also take account of wind chill and solar gain. In practice, the compensator is usually combined with the optimiser in a single unit.’


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