I believe our domestic hot water line is partially plugged. Plenty of pressure on the cold tap, very poor pressure on the hot water tap. The DHW is made by an oil-fired boiler. It also provides the main back-up heat (oil-fired hot water circulated to radiators). I'm pretty handy, but don't know a lot about furnace systems. Is it possible to flush the line out?
The reason why I think its plugged in the first place:
Our tap water source was an old dug well or a pond (depending on the season) pumped into the house by a jet pump. Both sources have pretty hard water. Last year we drilled a well, and ever since, we've had sand and grit coming out of the hot water line, but not the cold tap. My theory is that over years of the other water source, minerals were deposited on the inside of the pipes. Now, the water chemistry has changed somewhat and this stuff is now coming off. I suspect a chunk of it came out and is partially blocking the line. I'm open to other interpretations, but that's the best I can do!
The reason why I think its plugged in the first place:
Our tap water source was an old dug well or a pond (depending on the season) pumped into the house by a jet pump. Both sources have pretty hard water. Last year we drilled a well, and ever since, we've had sand and grit coming out of the hot water line, but not the cold tap. My theory is that over years of the other water source, minerals were deposited on the inside of the pipes. Now, the water chemistry has changed somewhat and this stuff is now coming off. I suspect a chunk of it came out and is partially blocking the line. I'm open to other interpretations, but that's the best I can do!