Here you will want to make as many notes about the home as possible. Make sure and test the plumbing, run the faucets, and showers, and flush the toilets. Also be sure to turn on the hot water and time how long it takes to get warm, a long wait on hot water is a great way to measure the condition of your potential new water heater. Flipping switches on / off and opening & closing windows can also give you a good idea of the heating situation as well as your new home’s electrical system.