Fill system with vinegar to get rid of calcium deposits?
I took the recently removed pressure relief valve from the H2O heater, which was completely encrusted in calcium, and soaked it for 24 hours in vinegar. I was amazed at how it dissolved almost 100% of the calcium. I tried to post pix, but it would not upload them, even after I shrunk them to the required file size?!?
Considering how it cleaned off almost all of the calcium buildup, I'm wondering if: 1) all of the water lines and valves have calcium buildup, and 2) if filling the system with vinegar and letting it sit for a day would clean it all up, or cause harm?