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I’m kind of at the end of my rope. I had a leak in a pipe repaired in my crawlspace last week that set me back almost $. I also have two radiator valves with minor leaks that need to be repacked when I can afford it (no visible water, just a low hissing when the boiler is active). I discovered the leaks after I started my system maybe six weeks ago, and was investigating why I was feeding about 8 gallons a day back into my boiler. Two different ‘steam guys’ came out and said it was entirely possible that the escaping steam and dripping water from that leaking pipe (along with the vales) could account for that volume of water loss, so I was hoping that repairing the pipe would at least begin to help resolve the issue. They each also said that every system is different, and that a few gallons loss might not be unusual for this one. I know better from reading this forum. There are no more drips or steam coming out of the pipe that was repaired, and yet I’m still losing 6-8 gallons a day. My condensate return goes under my basement floor - two pipes that run about 15 feet and join at a Y or T somewhere under there - so now I have a lot of anxiety that that is where the water is going. My system is otherwise working perfectly - quick, even heating throughout the house, no water hammer, silent with the exception of the feeder valve slamming off every other cycle - so how is it possible that maybe 500+ gallons of water have disappeared under my floor without any sign of a problem in the foundation or even the floor itself? There are no billows of steam coming out of my chimney; no moisture at the bottom of the chimney cleanout; no excessive humidity in the basement or rest of the house, no water in the basement. The volume of loss seems to occur most when the system is running versus say at night when it is off, and the condensate has plenty of time (4mins) to drain back down. I am kind of poor, and probably won’t be able to sell my house with that kind of issue (to say nothing of the fact that there are lead and asbestos concerns, as well). I have nightmares of a sinkhole developing. Is there a way to at least test under my house? Could there be another reason, such as my feeder counter reading artificially high? How many gallons are generally represented by say, an inch in the sight glass? Sometimes I feel like I’m just gonna have to see if I can make it until Spring and hope my house doesn’t cave in...I apologize for sounding like a Debbie downer about it, but I don't know if I have any options.