The Roman hypocaust, a type of #radiator for building space heating, was described in 15 AD.
The Roman hypocaust, a type of #radiator for building space heating, was described in 15 AD.
— Dor-Mar HVAC (@DorMar_HVAC) January 15, 2018
from Twitter https://twitter.com/DorMar_HVAC
January 15, 2018 at 09:46AM
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