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What Size Water Heater Do I Really Need?
When it comes to selecting a new water heater, there are plenty of important factors to consider… but few matter more than unit sizing. Right-sizing your water heater ensures optimal performance, keeps energy bills in check and contributes to a longer system lifespan. Meanwhile, installing a water heater that’s either too small or too large can lead to significant problems: a unit that’s too large usually leads to higher energy bills due to standby heat loss and frequent cycling, while an undersized unit will struggle to keep up with household demand.
So, what’s the ideal size for a household water heater? It’s not as simple as choosing a 40-gallon water heater vs 50-gallon water heater, or identifying a single size water heater for a family of five. Sizing will vary from one home to the next based on a handful of different factors.
Key consideration for water heater sizing
To ensure correct sizing, the first step is assessing the size of your household and your daily activity patterns. A family with six kids is naturally going to use more hot water each day than a single person who lives alone.
It’s not just about how big the household is, but also day-to-day usage patterns. That’s where peak demand comes into play. This term denotes the maximum amount of hot water your home might need during a particularly busy hour or extended period of the day. For example, for some households, this might be first thing in the morning, when everyone in the family is showering, making breakfast and preparing for their day.
A professional installer can walk you through different options for both traditional tank and tankless units, ultimately helping you select the option best-aligned with your needs. This recommendation should take into account metrics like the first-hour rating (how many gallons of hot water the unit can supply in an hour when fully heated) and recovery rate (how quickly the unit can reheat water after it’s been used). Bradford White also provides a range of industry-leading tools for professional installers to ensure proper sizing.
Ready to learn more about right-sizing your next water heater? Check out our directory to find a licensed Bradford White professional in your neck of the woods.