What size tankless water heater do I need?

Choosing the right size tankless water heater depends on your household’s hot water demands. Consider factors like the number of showers, appliances, and simultaneous usage to find the perfect fit. You also need to consider the size of your main gas line, gas meter, the length of the gas line needed to reach your tankless water heater, and the size of your main water line. There are specific calculations, code regulations, and manufacturer specifications that a plumber experienced with tankless will take into consideration before recommending a particular unit for your home.