Humidifier pump

[Fruitfilledevil]

Hello everyone
I have an Aprilair 500 installed on my furnace. The excess water drains into the AC condensate pump and pumps it outside via a 3/8 or 1/2 clear tube. The problem I'm having is in winter, it freezes. The tube is cut flush with the hose so no excess sticks out.
I do not have a basement floor drain, and my laundry tub is on a different level of the house. I don't know what to do. I have a sump pit that is sealed for radon purposes. Any suggestions/help would be appreciated.

 

[Fitter30]

If the hole can be made larger the make self regulated heat trace. 3 ft would more than enough.

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