Heater To Buy — What Size Water

To choose the right size water heater, you first need to decide between a (sized by gallons) or a tankless unit (sized by flow rate). The "perfect" size isn't just about the number of people; it’s about your peak hour demand —the busiest 60 minutes of hot water use in your home, such as a morning where multiple people shower while the dishwasher runs. 1. Traditional Tank Sizing

Look at the EnergyGuide label on a new unit; its FHR should match or exceed your calculated peak-hour usage. 2. Tankless (On-Demand) Sizing Sizing a New Water Heater | Department of Energy what size water heater to buy

Start with a 20-gallon base and add 10 gallons for every additional person in the home. To choose the right size water heater, you