Doing certain kinds of projects around your home can be a good thing, but a lot of that depends on what project you choose for your DIY work. Painting a bedroom can be a great choice. Installing a hot water heater? This one is best left to experts, especially if it is a tankless unit. While tankless units may look much simpler to handle than a storage tank hot water heater (which should also be handled only by an expert), the truth is that tankless units are actually a lot more complicated, particularly the flue assembly. So the answer to the question? Always leave the installation of your hot water heater – especially your tankless unit – to trained experts, like the ones from Schaal Heating and Cooling.