I was hired to install a new water heater in a customer's home. The customer had already purchased the water heater and provided me with the necessary information, including the model number and installation instructions. I arrived at the customer's home and began the installation process. I connected the water heater to the gas line and the electrical supply, and then I secured it in place with brackets and screws. I also installed a pressure relief valve and a temperature and pressure gauge to ensure that the water heater was operating safely. After the installation was complete, I tested the water heater to make sure it was working properly. The customer was very pleased with the work and paid me with a credit card.