ATX Plumbing Company

My house burned to the slab 18 months ago. I hired a GC who hired this plumber. It seemed to go very well at first. Chris was personable and met our timelines. We found out approximately 2 months after moving in that our tankless water heater was not installed properly. It stopped working and Chris refused to come back out and fix it- he stated he had not been paid in full by the GC, he was still owed 6,800 and he doesnt work for free, warranties do not apply until he is paid in full. I paid the GC in full per our agreement,sadly- this is not the only subcontractor that did not get paid by this GC. All others have returned in good faith to complete thier work but ATX Plumbing. I contacted the water heater manufacturer Renai, and am filing a claim through them as well as the plumber board. Renia says they teach every plumber how to install thier units and this one is WRONG. The water heater was installed directly under a dryer vent so it sucks in lint and was not vented properly. I have been without hot water more with hot water for 4 months. When the house was almost finished, Chris handed me his business card and said to contact him if we needed anything. When I didn almost 2 months later he refused to return.