FAQ: How Large A Tankless Water Heater Does A Family Of 3 Need?

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What size tankless water heater do I need for a family of 3?

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 much space does a tankless water heater need?

As a general rule of thumb any gas tankless water heater that uses internal combustion air musts have at least 10,000 cu. ft. of space around the unit. Confined areas (such as a closet) may require air ducts or additional air inlets.

How many BTU do I need for tankless water heater?

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.

Dishwasher 0.5 – 1.0 GPM
Bath tub 2.5 –.0 GPM
Jacuzzi/Hot tub 4.0 – 5.0 GPM

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.

What size tankless water heater is needed for family of 4?

Sizing Guide for Residential Tankless Water heater
Household Occupants Usage Capacity Required (Measured in Gallon)
2-3 people High 40-50
3- 4 people Regular/Low 40
High 50-75

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.

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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.

Where should a tankless water heater be installed?

The ideal location for your water heater is inside the home. Most installations are small and unobtrusive so they will easily fit in a pantry, under the stairs, or under your sink. If you must place the water heater outside, make sure it’s safe from direct sunlight, rain, and insects.

Where should a tankless electric water heater be installed?

And because we don’t have a storage tank we can choose a location where a tank-based unit may not fit – think small bathroom or even under sinks. Just keep in mind that most electric tankless water heaters must be installed vertically with the power and water supply connections pointing downward.

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.

Are electric tankless water heaters worth it?

Both rate Good for energy efficiency. Tankless: Gas and electric tankless water heaters run more efficiently than the conventional water heaters of the same fuel type. We rated the annual energy consumption cost Excellent for a gas model but only Fair for an electric, but both rate Very Good for energy efficiency.

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What is the best electric tankless water heater?

The 10 Best Electric Tankless Water Heaters

  • Stiebel Eltron Tempra 12 Plus Tankless Water Heater – Best Overall.
  • Titan SCR2 N-120 Electric Tankless Water Heater – Best Value.
  • Sio Green SIO18 Electric Tankless Water Heater – Premium Choice.
  • Ecosmart ECO 18 Electric Tankless Water Heater.

Does a tankless water heater need a dedicated gas line?

In many cases, there’s no need to run gas line all the way around your home to reach a tankless water heater. By installing the tankless unit on an exterior wall or even outside, builders can allow for shorter gas line runs and easier venting.

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