What does PA mean in HVAC?

The pressure is measured relative to the vacuum.

What is HVAC abbreviation?

The ENERGY STAR ® label can be found on heating, ventilating and air-conditioning equipment.

What is OA in HVAC?

Outside air is called OA.

What is pressure drop HVAC?

Some resistance to the air will be created by the filter that is installed in the system. Pressure drop is the difference in air pressure between the ductwork on one side of the filter and the ductwork on the other side.

What does CFM mean in HVAC?

The feet are per minute.

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