7+ Best Tankless Water Heater For The Large Homes With The Family Of 3/4/6 Reviews 2020!

A lot of individuals own large houses with 3 or 4 bathrooms, and then in the morning, they face trouble when they don’t have enough hot water to fulfill the hot water demand. The tankless water heater can really resolve the issue/ you simply have to get the one with a large water flow rate and best performance so that all of your family members can enjoy taking a hot water bath.

To make your decision making easy, we have compiled a list of some of the best tankless water heater for large homes reviews. Read these reviews and then decide which one is best for you and can really fulfill your hot water demands.

Top 7+ Best Tankless Water Heaters For Large Homes:

 

IMAGEPRODUCTDimensionsWeight
Electric
Stiebel Eltron Tempra Plus 24 kW
Stiebel Eltron Tempra Plus 24 kW 21.7 x 20.1 x 9.6 inches16.1 poundsCHECK ON AMAZON
Gas
Rinnai RUC98iN Ultra Series 2020
Rinnai RUC98iN Ultra Series 10 x 18.5 x 26 inches82 poundsCHECK ON AMAZON
Propane
Rinnai RL94eP 2020
Rinnai RL94eP14 x 10 x 23 inches44.3 poundsCHECK ON AMAZON
Gas
Rheem RTG-95XLN Outdoor Whole HOuse Tankless Water Heater Low NOx 9.5 GPM 2020
Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor14 x 10 x 26 inches54 poundsCHECK ON AMAZON
Gas

Takagi T-K4-IN-NG

Takagi T-K4-IN-NG 8.5 x 13.8 x 20.5 inches43 poundsCHECK ON AMAZON
Gas
Takagi T-H3-DV-N 2020
Takagi T-H3-DV-N11.2 x 17.8 x 24.9 inches0.16 ouncesCHECK ON AMAZON
Gas
top Noritz NR981-SV-NG Indoor-Outdoor Tankless Water Heater reviews 2020
Noritz NR981-SV-NG Indoor-Outdoor17 x 13 x 29 inches54 poundsCHECK ON AMAZON

Best Tankless Water Heaters For Large Homes:

Check out the following reviews of the best tankless water heating units for the big houses:

1. Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater:

Stiebel Eltron Tempra Plus 24 kW

Key Features:

  • Five GPM Water Flow Rate:

Five GPM flow rate may not be that much high, but still, it can supply hot water for 2 or 3 bathrooms in a big house. This water heating device can work great in the places where the supplied water is under forty-five degrees Fahrenheit.

  • Flow Control System:

This device comes with an advanced flow control system. It can really control the temperature of the water automatically when multiple bathrooms are being used all at the same time. It is helpful to make certain that the water temp doesn’t drop even a little. Thus this machine is suitable for individuals who need hot water occasionally.

  • Flow Control Modulation:

This unit also can support full power modulation. The built-in advanced water flow control modulates are utilized for regulating the pressure of the water automatically. It can really raise the water temperature by fifty-four degrees Fahrenheit at three gallons per minute.

Pros:

  • Reliable cover and high-level electronic parts
  • Compact shape, easy to fit anywhere in the house
  • High energy-efficient, it’s said to get ninety-nine percent of thermal efficiency
  • Quiet working performance
  • Powerful machine
  • Technologically advanced electronic water heater

Cons:

  • Hard to install, requires heavy-duty wiring and 240V power
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2. Rinnai RUC98iN Ultra Series Tankless Water Heater:

Rinnai RUC98iN Ultra Series 2020
Best Tankless Water Heater For The Large Homes

Key Features:

  • Energy Efficient:

The power requirement of this tankless water heating machine ranges from 15200-199000 British Thermal Units per hour, which is powerful adequate to supply constant hot water. But you require jus two watts for keeping the device up and running.

  • Large Water Flow Rate:

The water flow rate of this water heating device can reach as high as 9.8 GPM; thus, it’s an ideal tankless unit for the large houses, particularly for a family with 3 or 4 bathrooms. Natural gas is the main power source of this unit, which makes it even more powerful.

  • High Temp Range:

For residential use, the temp range of this device is from ninety-eight degrees Fahrenheit to one hundred and forty degrees Fahrenheit. If you are going to use it for commercial use, then its range can go as high as one hundred and eighty-five degrees Fahrenheit. The high energy efficiency rating of this device is 0.95, which can save you a lot of money. It will provide you constant and stable hot water when utilized for large houses.

Pros:

  • Less waiting time for the heated water just takes about twenty seconds
  • Provide two venting options, twin-pipe and concentric PVC, so you can pick one that’s simple to be installed
  • Powerful enough for serving for 3 or 4 bathrooms use at the same time
  • Quiet working condition
  • A powerful device with a high water flow rate
  • Residential and Commercial use accessible

Cons:

  • Has to be fitted by a professional
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3. Rinnai RL94eP Propane Tankless Water Heater:

Rinnai RL94eP 2020

Key Features:

  • High Water Flow Rate:

The water flow rate of this unit is 9 GPM. It also has a powerful internal design and can supply hot water for 3 or 4 bathrooms at the same time for the southern areas and in cold regions, two bathrooms.

  • High Temp Range:

Just like the one we have mentioned earlier, this tankless water heater is capable of providing water temp up to one hundred and eighty-five degrees Fahrenheit. It means that you can use this tankless water heater in the commercial areas as well.

  • Simple Operation:

The dial of this device is very simple to make use of. The required water temp can also be adjusted easily. It shows the error codes and the temperature of the water on the screen. It also comes with the self-modulating technology, which enables this device to switch on just when you require some hot water.

Pros:

  • Delicate design for the stable water temp
  • Save much cash for the heating costs in the utility usage
  • Simple to get the temp you desire
  • Energy efficient
  • Ideal for the large family usage with a powerful supply of water
  • Residential and Commercial use

Cons:

  • Waiting time is a little long
  • Hard to install, you would better get a professional to do the job
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4. Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor Tankless Natural Gas Water Heater:

Best Rheem RTG-95XLN Outdoor Low NOx Natural Tankless gas water heater Reviews 2020

Key Features:

  • Outdoor Installation:

The company boasts this particular product as the outdoor installation unit. But still, it can install indoors if you want. Both natural gas and propane are available. The thermal efficiency of this tankless device can reach as high as ninety-four percent, which denotes hardly ever energy is wasted.

  • Large Water Flow Rate:

This tankless water heater provides 9.5 gallons per minute of the water flow rate. With this much water flow rate, this device can supply hot water for 3 or 4 bathrooms at the same time easily in the warmer regions. When you make use of this unit in the colder areas, then the water flow rate can drop two to three gallons per minute. But still, it can fulfill your demand for hot water for two bathrooms at the same time.

  • Remote Control:

This tankless device is also equipped with the EcoNet smart home tech for controlling the device remotely using an application. The dual venting system of the device offers you even more options when the demand for hot water is high.

Pros:

  • Stainless steel heating exchanger
  • High energy efficient
  • Both natural gas and propane accessible
  • The large water flow rate
  • Supports three or four bathrooms use simultaneously
  • Outdoor usage requires no venting

Cons:

  • High installation price
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5. Takagi T-K4-IN-NG Tankless Water Heater:

Takagi T-K4-IN-NG
Takagi T-K4-IN-NG Tankless Water Heater

Key Features:

  • Powerful Device:

This device’s power range is from 11000-190000 British Thermal Units per hour, and the thermal efficiency of the device is 0.83. The company says that the climate does not affect the output of hot water, which denotes that the hot water supply is constant and stable no matter in which region or which weather it is being used.

  • 8 Gallons Per Minute Of Water Flow Rate:

The water flow rate of this device is quite low as compared to the other recommended best tankless water heaters for the big houses. But still, this unit can supply hot water to two or three bathrooms simultaneously, and the flow of the water stays stable all the time.

  • Smart Technology Inserted:

This tankless unit also comes with a self- diagnostic technology. The error codes and the temperature of the water is displayed on the console panel. If you are going to use this device in the colder region, then don’t worry because it has an internal freeze protection system, which will keep it away from being frozen. If utilized in the commercial areas, then the temperature of the water can be raised to 167 degrees Fahrenheit.

Pros:

  • Residential and Commercial use accessible
  • You’re free to fit it horizontally or vertically
  • Both outdoor and indoor installation
  • Freeze protection system
  • Self-diagnostic for the protection
  • Constant and stable supply of hot water

Cons:

  • Purchasing and installing a separate remote control is an extra expense
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6. Takagi T-H3-DV-N Natural Gas Indoor Tankless Water Heater:

Takagi T-H3-DV-N 2020

Key Features:

  • Pretty Powerful For Supplying Hot Water Constantly:

For providing the best performance, this tankless water heater demands 199000 British Thermal Units. Natural gas is the main power source of this unit. It is capable enough to supply constant hot water. It is a lightweight device even though with powerful performance and a large water flow rate. It can be installed anywhere you want.

  • Super Huge Water Flow Rate:

This tankless water heater provides ten gallons per minute of water flow rate. It is a perfect device for the big houses with 3 or 4 bathrooms and multiple faucets. The temperatures of the hot water can reach up to one hundred and eighty-five degrees Fahrenheit, which makes it possible to use it for commercial use as well.

  • Remote Control:

It can also be controlled using a remote controller. If you live in a large house or have multiple bathrooms, then the wait for hot water can be a little longer, which can be about one minute.

Pros:

  • Support constantly heated water for multiple bathrooms usage
  • Set up easily by appending numerous gas line
  • Remote control accessible
  • Big powerful machine
  • Dual venting options
  • Weight light

Cons:

  • Waiting time can be a little long
  • The water flow rate will be lowered when utilized in colder areas.
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7. Naiven NPE-240-A Tankless Gas Water Heater:

Naiven NPE-240-A
Naiven NPE-240-A

Key Features:

  • Powerful And Large Water Flow Rate:

The water flow rate of this device is nine gallons per minute. This unit is good at keeping the temperature of water-stable, even when multiple bathrooms are being used at the same time. It will still provide constant and stable hot water. When the temperature of the water drops suddenly, this device will correct it quickly to the original level.

  • Built-In Hot Buffer Tank & Recirculation Pump:

This tankless water heater has a built-in recirculation pump and hot buffer tank for eliminating cold water sandwich and saving on the water bills by decreasing the time to get the heated water. You would also not have to purchase an additional pump for getting the constant hot water, which will save your money.

  • Condensing Technology For Save Energy:

The condensing stainless steel heat exchanger that comes with this unit can recover the extra heat that’s not utilized for decreasing carbon dioxide emissions and energy consumption. It offers up to 0.97 Uniform Energy Factor; thus, it is very energy efficient.

Pros:

  • Clear installation and using directions
  • Highly technological
  • Smart preheating system
  • Short waiting time
  • Stable water temp
  • Simple operated external interface

Cons:

  • Waiting time can be a little long
  • The water flow rate will be lowered when utilized in colder areas.
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8. Noritz NR981-SV-NG Indoor-Outdoor Tankless Water Heater:

Noritz NR981-SV-NG Indoor-Outdoor

Key Features:

  • Large Power:

The gas consumption requirement of this tankless water heater is between 16000 and 199900 British Thermal Units. The low NOx system of this unit assists in reducing the carbon dioxide and greenhouse gas emissions. This tankless device is powerful enough for supplying constant hot water as it utilizes natural gas as the main power source.

  • Large Water Flow Rate:

The water flow rate of this device ranges from 0.5 gallons per minute to 9.8 GPM/ it is capable of supplying hot water for 3 or 4 bathrooms when utilized in the southern region. It can supply hot water for two bathrooms in the northern area. The temp range of the device is between 100-140 degrees Fahrenheit.

  • Elevation Adjustment:

This device comes with nine heating options and allows the remote control. The elevation of the unit is adjustable so that you can make use of it in altitude simply. The heating device is well developed and adopts the commercial-grade copper wall that is twenty-five percent thicker than the normal units, thus has a longer service life.

Pros:

  • Able to support several bathrooms to use
  • Endless supply of hot water
  • High efficient
  • High water flow rate
  • Elevation adjustment for the altitude
  • Remote control enabled, but you have to get an extra one

Cons:

  • Takes some time for hot water flow
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Best Electric Tankless Water Heater For The Large Houses:

The majority of electric tankless water heating units are utilized for travel or tiny home use, and that is because of the small power range they come with. But there is also one top electric tankless water heating device for the large houses we’d want to suggest to all those who are looking to buy the best tankless water heater:

Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater:

Stiebel Eltron Tempra Tankless Water Heater 2020

This tankless water heating machine is mainly powered by electricity. This unit is always listed as the best-selling electric tankless water heating device in the market of 2019. The Tempra Plus series is the improvement of the Eltron heating system; this series is more even powerful with a higher water flow rate and temp range. The smart technology like the water flow control regulation is also appended for regulating the pressure of the water when the demand for hot water becomes even high all of a sudden. Therefore, it can be highly suggested electric tankless water heater types for you. If you have any interest in this tankless machine, then check out for more on Amazon.

Top Tankless Water Heater For Large Homes Features:

For every diverse kind of tankless water heating system, the water flow rates and applications vary a lot. A few are utilized for small tiny houses. A few of these are utilized as commercial or even the industrial units, while a few are utilized for the large houses. When utilized for the large homes, we usually denote there’re several faucets and bathrooms, and they have to be utilized at the same time for everyday use.

features of tankless water heaters 2020

In such a case, there’s something you have to contemplate while selecting, so here we have mentioned some of the best features of the top tankless water heating systems for the large houses or buying instructions for you.

  1. Large Water Flow Rate:

The tankless water heaters with a large water flow rate can meet the demand of several uses. You’ll have a nonstop supply of hot water and enjoy fulfilling bathing.

  1. Whole House Type:

The majority of the tankless water heating systems for the large houses are the whole house types. They have to be capable of supporting multiple kitchen faucets, or bathrooms use. If you want to acquire a point of use type, then you might have to get numerous of them and fit right near the fixtures, which is highly expensive and takes up a lot of space by appending several water heating units at home.

  1. Large Power:

For supporting the constant supply of hot water for several bathrooms, the power range of such models has to be large enough. A few tankless water heating systems have a large water flow rate, but they still can’t be utilized for the whole house, particularly for the large houses use because of the small power they come with.

  1. Smart Functions:

A few of the top electric tankless water heating machines for the large homes are equipped with technological design or smart devices, like the self-modulating system, for adjusting and maintaining the pressure and temperature of the water and when the hot water demand is very high. With such smart functions, you’re capable of enjoying a stable flow of hot water.

  1. Energy Efficient:

Because of the large power requirement of these systems, the heating devices for large family use are usually propane or gas types. Therefore, the high energy-efficient tankless water heating system can’t just assist in saving cash but also useful in decreasing the greenhouse gas and carbon dioxide emissions.

Pay Attention:

Unlike the point of use tankless water heater, heating devices for the large houses have to move and supply hot water for several spots. Therefore in fitting, you have to contemplate the waiting time, in simple words, the distance between taps and your heating unit. Pick a place that’s appropriate for every spot of the heated water use.

Tankless Water Heaters For Large Homes Types:

Altogether there’re three types of tankless water heating units based on their power source; they’re propane type, electric type, and gas types.

Tankless Water Heaters For Large Homes Types

These tankless water heating systems are quite the same as the natural gas ones. The power, energy efficiency, and also the greenhouse gas emissions of these units are quite familiar as the gas ones.

These types are usually regarded as less powerful than the natural gas and propane type, therefore, the majority of them are created as the point of use types, or you can take them for use while camping or traveling. Therefore, the majority of the suggested systems in our reviews are propane and gas types.

The natural gas types are more powerful than the other ones, and using and heating charges for the long term is quite inexpensive. The majority of the whole house or families with three or four bathrooms are recommended to buy a natural gas tankless water heating devices for fulfilling the hot water demands constantly.

If you want to know more and the comparison of the three tankless water heating machines, then you can simply check them out freely in the reviews we have mentioned above.

Our Pick Is:

Among all the tankless water heaters types, we’d want to recommend the Rinnai RUC98iN Ultra Series Tankless Water Heater.

Rinnai RUC98iN Ultra Series:

Rinnai RUC98iN Ultra Series 2020

It provides 9.8 gallons per minute of the water flow rate, which enables to supply the constant hot water for you. The high power consumption requirement of this device is between 15200-199000 British Thermal Units per hour, which makes it to be the best tankless water heating system for three bathrooms or even more bathrooms. This device is powerful enough for supporting multiple users and still keeping the temperature of the water stable.

The natural gas power requirement and dual venting options assist in decreasing greenhouse gas emissions and also reduce the heating charges as much as possible. If you want to purchase such a product and want to know even more about it, then feel free to check out Amazon.