Quick Answer: For A Family Of 2 In A 1485 Sq Home How Big Of A Tankless Water Heater?

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

Sizing Guide for Residential Tankless Water heater
Household Occupants Usage Capacity Required (Measured in Gallon)
1- 2 people High 40-50
2 -3 people Regular/Low 40
High 50

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

What Size Tankless Water Heater Do I Need For A Family Of 2, 3, 4, 5, Or 6?

Number Of Family Members: Gas Tankless Heater Size ( GPM ) Electric Tankless Heater Size (kW)
What size tankless water heater do I need for a family of 3? 7-9 GPM 15-23 kW
What size tankless water heater do I need for a family of 4? 8-10 GPM 20-28 kW

Is a tankless water heater good for a large family?

On average, tankless water heaters can provide 2 to 5 gallons of hot water per minute. For those with large families who go through a lot of hot water, installing more than one tankless water heater is common. This will ensure there is always enough hot water available for showers, laundry and the dishwasher.

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How many tankless water heaters do I need in my house?

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.

What is the downside of a tankless water heater?

Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters.

Can a tankless water heater fill a tub?

A small tankless water heater can take a long time to fill a large tub. Two smaller water heaters can do the job of one big water heater.

Can you run out of hot water with a tankless water heater?

Endless Supply of Hot Water A tankless water heater heats up water as you need it, and it brings hot water to your appliances quickly—and never runs out.

How often should a tankless water heater be flushed?

Just like a tank unit, tankless water heaters need to be flushed once per year. Homeowners with hard water should consider flushing and cleaning the unit even more frequently, perhaps every six to nine months because of the excess amounts of magnesium and calcium found in hard water supplies.

How do I know what size tankless water heater I need?

How to Select the Right Size Tankless Water Heater

  1. Determine the maximum number of devices you want to run and their total flow rate. Then, add up their flow rates (gallons per minute).
  2. Determine required temperature rise.
  3. Sizing Example: An average shower will be between 104–106° and uses 2.6 gallons of water.
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Can a tankless water heater work for the whole house?

Built with scale-reduction technology, both electric tankless and gas tankless whole – house water heaters perform with high efficiency and are built to serve a wide range of applications. A whole – house tankless water heater is built to provide continuous hot water whenever you need it.

What is the best tankless water heater for large family?

Our Top Picks

  • BEST OVERALL: Rinnai RU160iN. The capabilities of the Rinnai RU160iN are impressive.
  • RUNNER UP: Rheem 240V Tankless Water Heater.
  • BEST ELECTRIC: Stiebel Eltron Tempra 36 Plus Tankless Water Heater.
  • BEST PORTABLE: Hike Crew Portable Propane Water Heater.
  • BEST POINT OF USE: ECOTOUCH Tankless Water Heater.

How hard is it to switch to a tankless water heater?

Tankless water heaters cost more than traditional tank water heaters; typically about twice the price for the unit alone, depending on what flow rate is needed. They’re also more difficult to install, as they have special venting requirements and often need larger gas lines because of the higher BTU rating.

Can you have 2 tankless water heaters?

It is possible to connect two tankless heaters to run parallel to each other, providing a larger amount of hot water on-demand. You could also get a larger tankless unit that can provide a higher flow rate.

How long does a tankless water heater last?

Most tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that extend their life by many more years. In contrast, storage water heaters last 10–15 years.

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Is 200 amp service enough for tankless water heater?

A: Electric Tankless water heaters usually require substantial and expensive upgrades in your system. This extra load requires at least 120 amps. The average home has a total capacity of 200 amps, which means an upgrade would be needed.

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