Flow Switch On Air Handler Ac Unit In Attic

Window air conditioning units often have a media filter that is simply a loosely woven mesh.

Flow switch on air handler ac unit in attic.

The mesh fits inside a plastic housing on the inlet side of the unit to prevent dirt from collecting on the cooling coils. Also slightly visible is a float switch which offers triple protection against flooding in an attic if the primary drain were to plug up. This is a horizontal flow air handler installed in the attic. You don t want a situation where the drain pan even comes close to filling up.

Typically the switch is located on the same side as the air handler s access doors and is attached to the side of the pan. We still install a float switch inside the drain line. Air is drawn through the mesh then passes through cold coils and is blown back into. The switch can become dislodged if accidentally bumped.

Adjusting the temperature in a house can be difficult. It is more expensive than a float switch but it s worth it. There are many types of float switches some come with audible alarms some come with visual alarms but most just turn the ac system off which. When the ac system is shut off it no longer dehumidifies or pulls moisture out of the air which means it isn t going to keep dumping water into a clogged drain line which would cause it to over flow.

If you ve ever seen a home damaged by a leaky air conditioner you ll likely agree. Install media filters in either direction. This is the secondary condensation pan which is installed under the air handler to save a ceiling. Notice the drain pan under the air handling unit to catch condensation if the primary pan were to overflow.