There are a multitude of reasons why this could be. Low refrigerant, too much refrigerant and/or PAG, blockage in the system, bad orifice, bad accumulator or receiver-drier (which you have depends on what type of AC system you have), blockage or damage to the condenser fins, faulty low pressure switch.. all are possible reasons why.
As far as I know, there is no such thing as an airconditioner filter.
How can you reset an ECU on a Kia Sedona
Purg The Air Out of the Cooling system
Where is the banck 1 kia sedona 2004
The 2012 Kia Sedona has a V6 engine.
The 2005 Kia Sedona has 24 valves.
The 2007 Kia Sedona has 24 valves.
The 2009 Kia Sedona has 24 valves.
The 2008 Kia Sedona has 24 valves.
The 2010 Kia Sedona has 24 valves.
The 2006 Kia Sedona has 24 valves.
The 2014 Kia Sedona has 24 valves.