Waterworks was one of two quotes we sought for installation of a tankless water heater. Although they have a predetermined price sheet for their jobs - a feature I appreciate, based on a previous job they did for us - they dropped to meet the competing quote, which was about 2/3d their listed price. Unfortunately, the original plan for the placement of the water heater was not possible due to the air intake/exhaust pipe placements and the job appears to have been more complicated than was initially thought. In the end, the job was completed without an air intake pipe, the necessity of which appears to be a point of debate. The installation was professionally done and Alex & Mike were thorough. I am satisfied with the work that was completed. Due to the initial incorrect spec of the job and the lack of an air intake pipe as part of the work, I would be unlikely to recommend Waterworks and would only use them again if I had competing quotes for the project.