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.

But much of the sensible cooling will be done by the radiant floor. When water is heated in a hydronic heating system also known as a hot water heating system dissolved air is driven out. 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. The closed system expansion tank is pre charged and should not need any pressure.

Why the legalett radiant floor system works. Air is the worst thing that can happen to any hydronic radiant heating system. 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. Air trapped within a closed radiant system is the most common cause of inefficient system performance.

Eventually this air can become trapped in the hot water lines. 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. If pressure is dropping below the 15 psi it is an indication of air still trapped in your system. An air system can also be used to supply central air conditioning and air cleaning.