Received three different proposals for my water heater install asap was the most knowlegable and professional company out of the lot not only that but they did a spectacular job on the installation! well done asap! You may also be interested in…. Do plumbers offer a written warranty? I have had a problem with my shower sometimes getting scalding hot water i called asap because a friend of mine referred me to them everything went well with the job i think i finally found a reliable.