FAQs

We have a drip coming out of underfloor heating manifold automatic air vents (AAV) on the flow and return above the temperature gauge.

We have a drip coming out of underfloor heating manifold automatic air vents (AAV) on the flow and return above the temperature gauge.

This is probably just debris within the valve, which is causing an obstruction of the seal. The Auto air vent can be isolated using the manifolds isolation valves. The top section of the AAV can then be removed to gain access for cleaning with water. Replace the auto air vent if damaged.