I’m in the Pacific Northwest at about a thousand feet elevation so the ground does freeze here. I have an idea where it comes into the crawl so maybe outside that area?
Mine comes in in our crawl space but I can’t get to where it comes in becasue of a sewer line that runs the width of the crawl and I can’t fit past it.
Mine was built in the 80s. I spent the morning crawling around my crawl space. There may be one down there but I can’t find it or it’s beind the sewer line I can’t get past, which just means I don’t have one. There is a knob in my garage which I have no idea what it goes it. I have turned it till it won’t turn both ways any nothing has happened that I could find.