2004 Dodge Neon ?

Son has a 2004 Dodge Neon that is losing coolant. Just took a look at it and there is a drain hose coming thru the firewall on passenger side with coolant leaking from it. My guess is the heater core but I'm curious if they have some kind of drain pan for the heater core in case it does leak and then it will not drain onto the passenger floor? Any suggestions or knowledge would be helpful. Thanks............kevin