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What are the proper temperature settings for my boiler?

April 26, 2017Boiler settings temperature

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What are the proper temperature settings for my boiler?

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The average setting for the aquastat (the temperature control device on a boiler) for a forced hot water system is 180°F. It can be raised as high as 210°F if needed in severe weather. For systems that use coils to heat domestic hot water, the high limit setting is 210°F and the low limit setting 140°F. A differential setting of 15°F is recommended for the optimum amount of domestic hot water.