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Propylene glycol is very important in order to guarantee the continued operation and lifespan of your air source heat pump. For the manufacturers which require glycol to be added to the system as part of their warranty conditions, SOLFEX provide only the most trusted food safe propylene glycol.


When commissioning many air source heat pump systems, it will be vitally important to ensure that the concentration of glycol in the system is at the level required to provide the expected protection down to a specific ambient temperature. The only accurate way to measure glycol concentration is through the use of a refractometer.

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