2003 T&C, freq. refill coolant d/t cold air when heater is running

[DrPowercat]

I have to intermittently refill coolant reservoir in the van when the heater is blowing cold air. This solves the problem for a little while.
I obviously have a coolant leak, but cannot find any evidence on the ground under the car and do not see any obvious leak. Is this a heater core problem or is there somewhere the coolant is leaking that I am not aware of?

[joeslip]

probably have a head gasket leak and you are burning it in one of the cylinders

[DrPowercat]

That matches with what another person told me. I am going to take it in and have a pro look at it, but can you give me a ballpark of what that might cost? Doesn't sound cheap.

[RIP]

Could head to an Autozone or the like, sign out or buy ($30) a coolant systems pressure tester and find the leak yourself.

A pro is going to charge you $60 - $100 to troubleshoot then add the cost of the fix which could cost $50 - $800 depending on what is leaking.