Question: What size tankless water heater do I need for a family of 2?

What is the equivalent of a 50 gallon tankless water heater?

To replace a 50-gallon water heater, you would, roughly speaking, need: 10 GPM gas tankless heater or at least a 27 kW electric tankless water heater if you live in the northern part of the USA. 7 GPM gas tankless heater or at least an 18 kW electric tankless water heater if you live in the southern part of the USA.

Do I need 1 or 2 tankless water heaters?

For larger households that typically use more than 85 gallons per day, two tankless systems, or the largest available model, are likely needed. For smaller households that use under 40 gallons per day, one unit should suffice. They are miniature tankless water heaters designed for use at one outlet, such as a sink.

How many BTU tankless water heater do I need?

In order to get the water to a sufficient temperature, the units use a high volume of gas, typically between 150,000 and 200,000 BTUs, which in most homes requires the upsizing of a gas line.

How do I choose the right size tankless water heater?

How to Select the Right Size Tankless Water HeaterDetermine the maximum number of devices you want to run and their total flow rate. Then, add up their flow rates (gallons per minute). Determine required temperature rise. Sizing Example: An average shower will be between 104–106° and uses 2.6 gallons of water.

What size navien do I need?

For a shower or bath - around 20 gallons. Showers with the energy efficient shower head - 2.5-3 gal/min. Automatic dishwasher needs around 14 gallons or 1.5 GPM. Washing machine needs 32 gallons to wash the clothes or 2 GPM.

What size water heater do I need for a family of 4?

For 1 to 2 people: 30-40 gallons. For 2 to 3 people: 40-50 gallons. For 3 to 4 people: 50-60 gallons. For 5+ people: 60-80 gallons.

What brand of tankless water heater is the most reliable?

Best tankless water heatersBest overall: Rinnai RUR160iN Water Heater. Courtesy of Amazon. Editors pick: Rinnai RU130iN. Courtesy of Amazon. Best for low prices: EcoSmart Eco 18 Electric Tankless Water Heater. Courtesy of Amazon. Best electric tankless water heater: Rheem RTEX-24. Best point-of-use heater: Bosch Tronic 3000.18 Feb 2021

Is it bad to oversize a tankless water heater?

As suggested when selecting a tank-type heater, you dont want to buy an oversized or undersized tankless water heater, as it will result in unnecessary issues such as the rising upfront price, operating costs and wasted water and energy - affecting your budget and time.

Can you get too big of a tankless water heater?

Tankless water heaters provide endless hot water on demand. However, tankless water heaters are limited by how much water they can heat at any given time. Choose too small of a system and it wont have the capacity to provide enough hot water to meet your household needs. Go too big and you will overpay.

Is a 50 gallon hot water heater enough for a family of 4?

The answer to this question will vary depending on the total number of kids you have. For example, a family of 3 to 4 people should purchase a 50 – 60 gallon water heater. On the other hand, a household with 5 – 7 people may require a water heater with a 60 – 80 gallon water tank.

What size tankless water heater do I need for a family of 4?

Sizing Guide for Residential Tankless Water heaterHousehold OccupantsUsageCapacity Required (Measured in Gallon)3-4 peopleRegular/Low40High50-755+ peopleRegular/Low506 more rows

Is a 50 gallon water heater enough for a family of 5?

The answer to this question will vary depending on the total number of kids you have. For example, a family of 3 to 4 people should purchase a 50 – 60 gallon water heater. On the other hand, a household with 5 – 7 people may require a water heater with a 60 – 80 gallon water tank.

What is the right size water heater for a family of four?

Water Heater Sizes For example, a family of 3 to 4 people should purchase a 50 – 60 gallon water heater. On the other hand, a household with 5 – 7 people may require a water heater with a 60 – 80 gallon water tank.

Do I need 40 or 50 gallon water heater?

Typically, the rule-of-thumb is that you want a 40 gallon tank for 1 to 4 people, a 50 gallon tank for 4 to 6 people, and a 50 gallon high recovery or 75 gallon tank for 6 to 8 people. Energy consumption for 40 and 50 gallon standard water heaters is quite comparable.

What size point of water heater do I need for a shower?

The average American shower consumes 14.8 gallons of water. From our research, the average storage tank size for a point of use is 2.5 gallons. We could not find any point of use tanks larger than 7 gallons. A typical shower has a flow rate of 1.5 gallons per minute.

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