8 Best Tankless Water Heater For Large Homes Reviews with Family of 3/4/6

Many people own large homes with three or four bathrooms, then in the morning, you must get trouble in lacking enough hot water for bathing the same time frequently. The tankless water heater can solve the problem easily, you just need to install a large flow rate and powerful one, then you can enjoy constantly hot water in each room. In order to help you choose the most suitable one, we made the best tankless water heater for large homes reviews for you as follow:

Top 9 Best Tankless Water Heaters for Large Homes

ProductsNameRatings
Stiebel Eltron Tempra Plus 244.8
best tankless water heater for family of 4Rinnai RUC98iN Ultra Series4.8
best tankless water heater for 3 bathroomsRinnai RL94eP Propane4.7
best electric tankless water heater for large homesRheem RTG-95XLN4.8
best electric tankless water heater for large homesTakagi T-K4-IN-NG4.2
best tankless water heater for family of 6Takagi T-H3-DV-N4.5
condensing tankless water heater reviewsNaiven NPE-240-A4.6
are tankless water heaters good for large familiesNoritz NR981-SV-NG Indoor-Outdoor4.2

Best Tankless Water Heaters For Large Homes

1. Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater

 

 

Features:

  • Flow Control System

It is equipped with the advanced flow control system, when multiple bathrooms are using the same time, the system will automatically control water temperature, to make sure it does not drop. Thus it is suitable for people in demand of occasional hot water, too.

  • 5 gallons per minute of water flow

5 gallons per minute water flow rate maybe not a super high rate, but it is still capable enough on providing hot water for two or three bathrooms in large homes. It works best in an area where supplied water is under 45 degrees F.

  • Flow control modulation

It supports full power modulation, and built-in advanced flow control modulates are used to regulate the water pressure automatically. It is able to raise the water by 54 degrees F at 3 GPM.

Pros:

  1. Compact shape, convenient to install anywhere at home
  2. High-level electronic parts and reliable cover
  3. Quiet working performance
  4. High energy-efficient, it is said to get 99% thermal efficiency
  5. The most technologically advanced electric water heater
  6. Powerful machine

Cons:

Difficult to install, needs 240v power and heavy-duty wiring


2. Rinnai RUC98iN Ultra Series Tankless Water Heater

best tankless water heater for family of 4
best tankless gas water heater for large homes

 

 

Features:

  • Large flow rate

The flow rate of this unit reaches as high as 9.8 gallons per minute, thus it is a perfect tankless water heater for large homes, especially for a family with three or four bathrooms. And natural gas as a power source makes it a much more powerful other types.

  • Energy efficient

The power requirement of it ranges from 15200 to 199000 BTU per hour, which is powerful enough to provide constantly hot water for you. But you need only 2 watts to keep the machine up and running.

  • High-temperature range

The temperature range for residential use is from 98 degrees F to 140 degrees F, if for commercial use, it reaches as high as 185 degrees F. 0.95 high energy efficient rating saves much money for you. When used for large homes, it is able to provide stable water flow for you.

Pros:

  1. Offer 2 venting options, concentric PVC and twin-pipe, so you can choose one that is easy to be installed
  2. Short waiting time for hot water, only takes about 20 seconds
  3. Quiet working condition
  4. Powerful enough to serve for three or four bathrooms use simultaneously
  5. Commercial and residential use available
  6. High flow rate and powerful machine

Cons:

Needs to be installed by professional


3. Rinnai RL94eP Propane Tankless Water Heater

best tankless water heater for 3 bathrooms
tankless water heater for 3 bathrooms

 

 

Features:

  • High-temperature range

Like the above RUC98iN series we recommended, this unit is also able to support water temperature up to 185 degrees F. It means it can be used as a commercial tankless water heater too.

  • High flow rate

It is capable of supporting 9 gallons of water per minute for you, and because of its powerful internal design, it can provide constantly hot water for multiple bathrooms such as three or four bathrooms use the same time for southern areas, and also two bathrooms in cold regions.

  • Easy operation

The dial is easy to use and you can adjust the needed temperature easily, water temperature and error codes show on the screen. Self-modulating technology enables it to turn on only when you need hot water.

Pros:

  1. Save much money for heating costs in utility use
  2. Delicate internal design for stable water temperature
  3. Energy efficient
  4. Easy to get the temperature you want
  5. Commercial and residential use
  6. Perfect for large family use with powerful water supply

Cons:

  1. Difficult to install, you’d better get a professional for help
  2. Waiting time for hot water is a bit long


4. Rheem RTG-95XLN 9.5 GPM Low NOx Outdoor Tankless Natural Gas Water Heater

best electric tankless water heater for large homes
best tankless water heater for large homes

 

 

Features:

  • Large flow rate

9.5 GPM high flow rate heating machine of this supports constantly hot water for three or bathrooms easily in warm areas. When used in cold regions, the flow rate drops 2-3 GPM, but still able to meet the demand of two bathrooms use the same time.

  • Outdoor installation

It is said to be an outdoor installation unit, but you can still install it indoor. Both propane and natural gas are available and the thermal efficiency reaches as high as 94%, which means seldom energy is wasted.

  • Remote control

It is equipped with EcoNet smart home technology to control the machine remotely through the app. Dual venting gives you more options when water demand is high.

Pros:

  1. High energy efficient
  2. Stainless steel heat exchanger equipped
  3. The large flow rate of water
  4. Both propane and natural gas available
  5. Outdoor use, requiring no venting
  6. Supports 3 or 4 bathrooms use the same time

Cons:

High installation cost


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

best tankless water heater large family
best tankless water heaters for large homes

 

 

Features:

  • Powerful machine

The power range of the machine is from 11000 to 190000 BTU per hour, thermal efficiency is 0.83. Takagi boasts that the hot water output is not affected by the climate, it means it keeps stable and constant no matter for the weather or for the regions.

  • 8gpm flow rate

Compared with other recommended best tankless water heaters for large homes, the flow rate of this one is quite low, but it is still able to support 2 or 3 bathrooms use the same time and the water flow stays stable all the time.

  • Smart technology inserted

It is equipped with a self- diagnostic system, the led light with water temperature and error codes show off on the console panel. Internal freeze protection system prevents the machine from being frozen. Remote control raises the water temperature to 167 degrees F for commercial use.

Pros:

  1. You are free to install it vertically or horizontally
  2. Commercial and residential use available
  3. Freeze protection system
  4. Both indoor and outdoor installation
  5. Stable and constant hot water supply
  6. Self-diagnostic system for self-protection

Cons:

Buying and installing remote control is an extra cost


6. Takagi T-H3-DV-N Natural Gas Indoor Tankless Water Heater

best tankless water heater for 2 bathroom homes
best tankless water heater for 3 bathrooms

 

 

Features:

  • Super huge flow rate

The flow rate of this unit reaches as high as 10 GPM, a perfect one for a large family with three or four bathrooms and multiple faucets use the same time. The released hot water temperature reaches up to 185 degrees F. So you can also use it for commercial use.

  • Pretty powerful for constantly hot water

It demands 199000 BTU per hour to perform in its best performance, along with the natural gas power source, it is capable enough on providing constantly hot water for you. Though with large flow rate and powerful performance, it weights light and you can install it anywhere you want.

  • Remote control

You can integrity it with remote controller and control it in other rooms. But for large home use or multiple bathrooms use, the waiting time for hot water may be a bit longer, takes about 1 minute approximately.

Pros:

  1. Set up simply by adding several gas line
  2. Support constantly hot water for multiple bathrooms use
  3. Large powerful machine
  4. Remote control available
  5. Weight light
  6. Dual venting options

Cons:

  1. The flow rate will be lowered when used in cold regions.
  2. Waiting time for hot water can be a bit long


7. Naiven NPE-240-A Tankless Gas Water Heater

best tankless water heater for 4 bathrooms
best tankless water heater for large homes

 

 

Features:

  • Built-in recirculation pump and hot buffer tank

This unit has a built-in hot buffer tank and recirculation pump to eliminate cold water sandwich and save water bills by reducing time to get hot water. It also saves much money on buying an extra pump for constant hot water.

  • Powerful and large flow rate

The flow rate of this unit reaches around 9 GPM, it is good at keep water temperature, even when you start using multiple bathrooms the same time, you can still get stable and constant hot water. When the water temperature drops suddenly, it will quickly correct to the original level.

  • Condensing technology to save energy

The condensing stainless steel heat exchanger recovers extra heat that is not used to reduce energy consumption and carbon dioxide emissions. It provides up to 0.97 UEF, thus is highly energy efficient.

Pros:

  1. Highly technological machine
  2. Clear installation and using instructions
  3. Short waiting time for hot water
  4. Intelligent preheating system
  5. Easy operated external interface
  6. Stable water temperature

Cons:

  1. Slight working noise
  2. Do not come with a remote controller


8. Noritz NR981-SV-NG Indoor-Outdoor Tankless Water Heater

are tankless water heaters good for large families
best tankless water heater for a large family

 

 

Features:

  • Large flow rate

Flow rate range of this unit is from 0.5 GPM to 9.8 gallons per minute, capable of offering hot water for three or four bathrooms used in the southern area, and two bathrooms in the northern part. Temperature range is between 100 to 140 degrees F.

  • Large power

The gas consumption requirement is between 16000 BTU and 199900 BTU per hour, low NOx design helps reduce emissions of greenhouse gas and carbon dioxide. Together with natural gas power, this unit is powerful enough on providing constantly hot water for you.

  • Elevation adjustment

It has 9 heating options and enables remote control. The elevation is adjustable, so you can use it in altitude easily. The heating machine is well made, adopts commercial-grade copper wall that is 25% thicker than normal models, thus has a long service life.

Pros:

  1. Endless hot water provided
  2. Capable of supporting multiple bathrooms use
  3. High flow rate
  4. High efficient
  5. Remote control enabled, but you need to get an extra remote controller
  6. Elevation adjustment for altitude

Cons:

Takes a little time for hot water flowing out


Best Electric Tankless Water Heater For Large Homes

Most of the electric tankless water heaters are used for tiny home or travel, because of their small power range. But there are also one best electric tankless water heater for large homes we would like to suggest to you:

Stiebel Eltron Tempra Plus 24 kW Tankless Water Heater

This machine is powered by electric, and it is always listed as the top-selling electric tankless water heater on the market of 2019. Tempra Plus series is an improvement of Eltron heater, this series is more powerful and higher temperature range and flow rate.

Smart technology such as flow control regulation is also added to regulate water pressure when water demand becomes high suddenly. Therefore, this can be highly recommended electric types for you. Check out for more if you have an interest in the unit on Amazon.


Features Of Best Tankless Water Heater For Large Homes

For each different types of tankless water heaters, applications and flow rates differ a lot. Some are used for small tiny homes, some are used for commercial or even industrial heater, while some are used for large homes.

When used for large homes, we normally mean there are multiple bathrooms and faucets and they need to be used simultaneously for daily use. In such occasion, there is something you need to consider in choosing, so here we offer the features of best tankless water heater for large homes or buying tips for you.

1. Whole house type

Most of the tankless water heaters for large homes are whole house types, they need to be able to support multiple bathrooms or kitchen faucets use. If you intend to get a point of use one, then you may need to get several of them and install right near the application fixture, which is highly costly and occupies much space by adding multiple heaters at home.

2. Large flow rate

Large flow rate tankless water heaters can meet the demand of multiple uses, you will have endless hot water and enjoy satisfying bathing.

3. Large power

To support constantly hot water for multiple bathrooms, the power range of the unit must be large enough. Some tankless water heaters have a large flow rate, but they still can not be used for whole house especially for large homes use because of their small power.

4. Energy efficient

Because of the large power requirement, the heating machines for large family use are normally gas or propane types. Therefore, a high energy-efficient tankless water heater can not only help save money but also helpful in reducing carbon dioxide and other greenhouse gas emission.

5. Smart functions

Some of the best electric tankless water heaters for large homes are equipped with smart devices or technological design, such as self-modulating system, in order to adjust and maintain water temperature and pressure when the demand of water is high. With smart functions like that, you are able to enjoy stable water flow.

tankless water heater for 3 bathrooms
best electric tankless water heater for large homes

Attention:

Unlike point of use tankless water heater, heating machines for large families need to transfer and support hot water for multiple spots. Therefore in installation, you need to consider the waiting time, in other words, the distance between the heating machine and taps. Choose a place that is suitable for each spot of hot water use.

Types Of Tankless Water Heaters For Large Homes

Altogether there are three types of tankless water heaters based on the power source, they are electric type, propane type, and gas types.

Electric tankless water heaters are normally regarded less powerful than propane and natural gas type, therefore, most of them are designed as a point of use types, or you can carry it for use in traveling and camping. Therefore, most of the recommended heaters on our reviews are gas and propane types.

Propane tankless water heaters are quite the same as natural gas, the energy efficiency, power and also greenhouse gas emissions are quite familiar as gas do.

Natural gas tankless water heaters are more powerful than other types, and using heating costs for long term use is quite cheaper. Most of the whole house or family with 3 or 4 bathrooms are suggested to get a natural gas type to support hot waters constantly.

If you intend to get more information and the comparison of the three tankless water heaters, you can check out freely on our reviews.

best electric tankless water heater for large homes
best tankless water heater for large homes

What We Pick Is…

Among all the types of tankless water heaters, we would like to suggest Rinnai RUC98iN Ultra Series Tankless Water Heater for you, 9.8 GPM high flow rate enables to support constantly hot water for you, and high power consumption requirement between 15200 and 199000 BTU per hour enable it to be a best tankless water heater for 3 bathrooms or even more bathrooms. It is powerful enough to support multiple users and still keep water temperature stable.

Dual venting options and natural gas power required help reduce greenhouse gas emissions and also reduce your heating costs as much as possible. If you have any interest in such item or intend to get more information as well as price details, please check out freely on Amazon.

best tankless water heater for 3 bathrooms
best tankless water heater large family