Tankless Vs Tank Water Heater Calculator

Sizing storage and heat pump with tank water heaters.

Tankless vs tank water heater calculator.

Tankless water heater sizing calculator. Typically tankless water heaters provide hot water at a rate of 2 5 gallons 7 6 15 2 liters per minute. Homeowners with on demand tankless water heaters that use less than 41 gallons or less of hot water each day enjoy between 24 and 34 percent more energy efficiency than storage tank water heaters. Tankless water heaters heat water directly without the use of a storage tank.

Before we get to how to use the calculator to size a tankless water heater let s talk about the factors that go into understanding what size inline water heater you need. Now you need to understand what temperature rise means. Either a gas burner or an electric element heats the water. Tankless water heaters by erika rawes and michael bizzaco september 3 2020 a new water heater is a significant investment and it s important to research different products to find a.

However a tankless water heater s output limits the flow rate. Northern region central region southern region. You don t need to wait for a storage tank to fill up with enough hot water. Flow rate and temperature rise where are you located.

Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings. Choose the right tankless electric water heater for you. The first hour rating is the number of gallons of hot water the heater can supply per hour starting with a tank full of hot water. We already covered gpm.

Gas fired tankless water heaters produce higher flow rates than electric ones. Tank heaters cost less up front but are expensive to run and wear out sooner. Comparing a standard tank heater 50 gallon electric with an equivalent tankless condensed gas fired unit the tankless unit can reduce energy costs by 60 or more. If you use lots of hot water daily around 86 gallons you might enjoy energy efficiency of an additional 8 to 14 percent.

Tankless heaters cost slightly more up front but can save you substantially on your monthly bills. While tankless water heaters run more efficiently than storage tank water heaters replacing a tank water heater with a tankless can be expensive and the payback time can be longer than the warranty. Just follow the three simple steps below to choose the right model and size you need.