Do I need to count this in the maximum snow depth?

mattmia2 · February 21

epmiller · February 21

Haha, I've seen several of those ice stalagmites this winter. We've had a much longer than normal spell of temperatures below freezing around here. My neighbor had a pretty thick one right up to the PVC. His boiler isn't running in the condensing range very often. I was about to go warn him and then we had temps above freezing. I even had a tiny one starting and my boiler never goes over 130° stack temperature except when running the indirect HWH.

dabrakeman · February 21

Yes my sons furnace integrated humidifier drain line froze up with a huge 6" diameter stalagmite. Wish I had gotten a picture. Water all over the basement floor underneath the furnace, Line runs through crawl space and out the back as pictured. He had to pull the tube out of the PVC drain pipe and drain into a pan for a couple weeks till things thawed out. The stalagmite was too robust to try to melt or or break away. Trying to think of preventative measures for him. Insulating the PVC in the crawl space?

mattmia2 · February 21

https://forum.heatinghelp.com/discussion/comment/1888993#Comment_1888993

i did't take a picture of it a week later just before it started warming up and it melted, but the heat from the boiler melts the end so it stays that far from the vent, it was much fatter at the top from the top of it melting from the boiler exhaust and refreezing on the sides that it was when i took this picture.