Customer recently had a tankless water heater. Relocated and installed by us. The gas flex line was slowly leaking at the union. For the drip tee. I tightened down and tested by spraying bubbles on not only that fitting, but every fitting on the.Recent job. Afterwards I asked the customer if they had any other plumbing issues, they would like for me to look at and we replaced a dishwasher drain line that had been leaking underneath the cabinet of the kitchen sink. Thank you for choosing and trusting t e with your plumbing needs