I would highly recommend The Drain Guys. The process was simple and Rich went way above and beyond. I called in the afternoon and they were able to set up an appointment to repair my tankless hot water heater the next morning. Rich communicated the day before, on his way and confirmed when he left his previous job with an ETA. He was punctual and communicative. Before he did the work, Rich explained what he would do and the costs associated with it. After he repaired it, he showed me the work he did and explained the maintenance process for tankless hot water heaters. He went above and beyond and answered all the questions I had. I also spoke with him about a notice I got from DC Water about Lead pipe replacement and he thoroughly explained the process that they go through for the replacements. Should I need this service, I would definitely consider using The Drain Guys. I appreciate the professionalism and the willingness to go above and beyond my expectations. The price seemed reasonable and best of all, I have hot water and know how to maintain my tankless heater now.