How to Size a Tankless Water Heater

Choosing the right size tankless water heater is crucial for ensuring you have enough hot water to meet your household’s needs. Unlike traditional water heaters that store and heat a set amount of water, tankless models heat water on demand. This means the size of the heater directly impacts how effectively it can meet hot water demand when needed. Use our step-by-step guide to help you size a tankless water heater for your home.