specific heating system antifreeze is commonly used in hydronic or boiler systems, in some areas the tube-in-concrete systems are used for de-icing sidewalks and driveways .... but note that the antifreeze lowers the heating efficiency
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
