Air Trapped In Radiant Floor

Legalett air heated radiant floor heating systems are entirely embedded in concrete including the heater box.

Air trapped in radiant floor.

Fortunately it s an easy problem to solve and won t become an issue at all if care is taken during the initial filling process. It is a closed loop system where air is moved through either 2 or 4 inch pvc tubes which are non corrosive so that no dust from the air in the home is introduced into the system. Thus creating a vacuum this will suck air into the system. Air is the worst thing that can happen to any hydronic radiant heating system.

The closed system expansion tank is pre charged and should not need any pressure. You will need one or two wall mounted fan coils in order to keep the humidity low enough so that no condensation occurs on the floor air dew point floor temp. Why the legalett radiant floor system works. An air system can also be used to supply central air conditioning and air cleaning.

In the summer it can also be used to cool the floor. Central heating systems use either a furnace with hot air ducts or a boiler with hot water hydronic pipes and radiators including radiant under floor heat. Air trapped within a closed radiant system is the most common cause of inefficient system performance. When water is heated in a hydronic heating system also known as a hot water heating system dissolved air is driven out.