For this job, the customer was explaining to me when the children taking a shower, they would have no hot water, and the water pressure would be low. So I proceeded to check the gas valve coming in and found it a little low so I adjusted up to 12.5 wc. Propane. Then I had flush the tankless water heater. The customer also told me that they just put in a new well and the company that did it said to get the mud out of the line they need to flush it 3 times a day for 2hrs in a Week. So I went to check the house filter to find that clog. I also noticed that when they would flush the system out, they would leave the main shut off valve open to the house, while They are flushing the well. So I have to replacing the filter, I went upstairs to the bathroom to find both shower and sink had sand in it. My recommendation for the customer is to continue flushing the well out, but closing the main shut off valve to the house. That would prevent Mud and sand going into all the appliances. I als