Buying a water heater can feel confusing because there are many options, from instant to storage models, each with different capacities and power usage. The right choice depends on your daily hot water needs, home size, and electricity consumption. This guide explains the difference between instant and storage water heaters, helps you understand capacity requirements, power consumption, and smart features, and makes it easier to choose a water heater that offers comfort, efficiency, and long-term value without unnecessary complexity.