Like me, you own large homes with 3 to 4 bathrooms, and someone in the family doesn’t like bathing with cold water in the morning frequently. The tankless water heater can solve this problem easilt, you simply need to install a large flow rate and a powerful one at that, then your family gets to enjoy frequent hot water baths in each room. In order to help you select the most suitable one, we compiled the best tankless water heater for large homes reviews for you to follow:
Table of Contents
Top 9 Best Tankless Water Heaters for Large Homes
| Products | Name | Ratings |
  |
Stiebel Eltron Tempra Plus 24 | 4.8 |
  |
Rinnai RUC98iN Ultra Series | 4.8 |
  |
Rinnai RL94eP Propane | 4.7 |
  |
Rheem RTG-95XLN | 4.8 |
  |
Takagi T-K4-IN-NG | 4.2 |
  |
Takagi T-H3-DV-N | 4.5 |
  |
Naiven NPE-240-A | 4.6 |
  |
Noritz NR981-SV-NG Indoor-Outdoor | 4.2 |
Best Tankless Water Heaters For Large Homes
Features:
- Flow Control System
It boasts of an advanced flow control system, when various bathrooms are using it at the same time, the system will automatically control water temperature, to ensure it does not drop. So, it is suitable for people who love hot running water frequently or occasionally.
- 5 gallons per minute of water flow
I know, 5 gallons per minute water flow rate maybe not a super hivh rate, but it is still capable enough on providing hot water for 2 or 3 bathrooms in large homes. It works best in an area where water supplied is under 45 degrees F.
- Flow control modulation
It supports complete power modulation, and built-in advanced flow control modulates are meant to regulate the water pressure automatically. It is able to raise the water by 54 degrees F at 3 GPM.
Pros:
- Powerful machine
- It works quietly
- Outstandingly the most technologically advanced electric water heater
- High-level electronic parts and reliable cover
- Compact shape, convenient to install anywhere at home
- High energy-efficient, it is said to get 99% thermal efficiency
Cons:
Hard to install, and needs 240v power with heavy-duty wiring
best tankless gas water heater for large homes
Features:
- Large flow rate
The flow rate of this unit goes as high as 9.8 gallons per minute, so it is a perfect tankless water heater for large homes, especially for a family with 3 to 4 bathrooms. It uses natural gas as a power source which makes it more powerful than other types.
- Energy efficient
The power requirement of it ranges from 15200 to 199000 BTU per hour, which is powerful enough to provide constant hot water for you.
Want to know the best part?
You only need 2 watts to keep the machine up and running.
- High-temperature range
The temperature range for residential use begins at 98 degrees F to 140 degrees F, if for commercial use; it goes as high as 185 degrees F. 0.95 high energy efficient rating saves much money for you. When used for large homes, it is more than capable to provide stable water flow for you.
Pros:
- Powerful machine with a high flow rate
- Quiet working condition
- It takes only 20 seconds to get warm water. So, it has a short waiting time
- Comes with 2 venting options, twin-pipe and concentric PVC, so you can select one that is simple to be installed
- Residential and commercial use available.
Cons:
Installation needs to be carried out by a professional
Tankless water heater for 3 bathrooms
Features:
- High-temperature range
Like the RUC98IN series we recommended above, this unit can also 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 more than able to support 9 gallons of water per minute for you, and because of its strong internal design, it can give you constant hot water supply for various bathrooms such as 3 or 4 bathrooms use at the same time in southern regions, and also 2 bathrooms in cold regions.
- Easy operation
The buttons are simple to use and the temperature can be adjusted with ease, error codes and water temperature are displayed on the screen.
Self-modulating technology allows it to come on ONLY when you need hot water.
Pros:
- It is energy sufficient
- Simple to get the temperature you want
- Residential and commercial use
- Save much money for heating costs in utility use
- Delicate internal design for stable water temperature
- Perfect for large family use with powerful water supply
Cons:
- Hard to install, you’d better seek a professional for help
- Waiting time for hot water is a bit long
Best tankless water heater for large homes
Features:
- Large flow rate
With its 9.5 GPM high flow rate, this heating machine supports constant hot water for 3-4 bathrooms easily in warm areas. When used in cold areas, the flow rate falls 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 armed with EcoNet smart home technology that allows you control the machine remotely via the app. Double venting provides you with more options when water demand is high.
Pros:
- Both natural and propane gas available
- The large flow rate of water
- Supports 3 to 4 bathrooms use at the same time.
- High energy efficient
- Stainless steel heat exchanger equipped
- Outdoor use, requiring no venting
Cons:
High installation cost
best tankless water heaters for large homes
Features:
- Powerful machine
Armed with a power range of 11000 to 190000 BTU per hour, and thermal efficiency of 0.83, Takagi is one hot water output that is not affected by climate. It constantly supplies you stable warm water no matter the region or weather.
- 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 comes with a self-diagnostic system, the led light with error codes and water temperature show off on the console panel. Internal freeze protection system DOES NOT ALLOW the machine gets frozen. Remote control raises the water temperature to 167 degrees F for commercial use.
Pros:
- Freeze protection system
- Constant and stable hot water supply
- Residential and commercial use available
- Both indoor and outdoor installation
- You can install horizontally or vertically
- Self-diagnostic system for self-protection
Cons:
Buying and installing remote control are at different costs causing you to spend more
best tankless water heater for 3 bathrooms
Features:
- Super huge flow rate
The flow rate of this unit goes as high as 10 GPM, a perfect one for a large family of 2-4 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
To get the best performance, It requires 199000 BTU per hour, along with the natural gas power source, it is able to constantly provide 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
It can be integrated with remote control and you get to control it in other rooms. But for large home use or various bathrooms use, the waiting time for hot water may be a bit longer, takes about 1 minute approximately.
Pros:
- Light weighted
- Has a remote control
- Large powerful machine
- Set up simply by adding several gas line
- Support constantly hot water for many bathrooms use
- Double venting options
Cons:
- When used in cold regions, the flow rate is lowered.
- The waiting time for the water to become hot can be a bit long
best tankless water heater for large homes
Features:
- Built-in recirculation pump and hot buffer tank
This unit has a built-in recirculation pump and buffer tank to eliminate cold water sandwich and save water bills by beating down time to get hot water. It also saves much money on purchasing extra pump for frequent hot water.
- Powerful and large flow rate
The flow rate of this unit goes as high as 9 GPM, it is good to keep water temperature, even when you begin using various bathrooms the same time you can still get stable and constant hot water. When the water temperature drops without notice, 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 carbon dioxide emissions and energy consumption rate. It provides up to 0.97 UEF, thus is highly energy efficient.
Pros:
- Gives stable water temperature
- Smart pre-heating system
- Installation instructions are clear
- Short waiting time for hot water
- Easy operated external interface
Cons:
- Gives off a small working noise
- It lacks a remote controller
best tankless water heater for a large family
Features:
- Large flow rate
The Noritz flow rate of this unit ranges from 0.5 GPM to 9.8 gallons each minute, and can continuously churn out hot water for 3 to 4 bathrooms used In the southern area, and 2 bathrooms in the northern part. Temperature range falls between 100-140 degrees F.
- Large power
The gas consumption needed is between 16000 BTU and 199900 BTU per hour, low NOx design aids reduction of emissions of greenhouse carbon dioxide and gas. Together with natural gas power, this unit is powerful enough on providing frequent hot water for you.
- Elevation adjustment
It has 9 heating options and enables remote control. The elevation can be adjusted, 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:
- High efficient
- Continuous hot water provided
- Highly efficient
- Has an high flow rate
- Capable of supporting multiple bathrooms use
- Remote control enabled, but you need to get an extra remote controller
- Elevation adjustment for altitude
Cons:
For the hot water to flow out, it needs time
Best Electric Tankless Water Heater For Large Homes
Most electric tankless water heaters are used for travel or tiny home, because of their little power range. However, there are is one best electric tankless water heater for large homes we would lobe to recommend to you:
This machine runs on electricity, and is always listed amongst the top-rated electric tankles water heater on the market of 2020. Tempra Plus series is a better version of Eltron heater, this series has proven to be more powerful and well equipped with higher temperature and flow rate.
Smart technology such as flow control regulation has been added to regulate water pressure when water demand rises suddenly. So, these are 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 tankless water heaters types, flow rates and applications vary a lot. Some are used for small tiny homes, some are used for large homes, and others are used for industrial or even commercial heaters.
When used for large homes, we often mean there are various faucets and bathrooms and they need to be used at the same time for day-to-day use. In such occasion, there is something you need to consider choosing, so here we offer the factors that determines the best tankless water heater for large homes or buying guide for you.
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Whole house type
A big number of tankless water heaters meant for large homes are whole house types, they need to be able to support various bathrooms or kitchen faucets use. If you intend to get a point of use one, then you may need to get many of them and install right near the application fixture, which is highly costly and occupies much space by adding many heaters at home.
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Large flow rate
Large flow rate tankless water heaters can fit multiple uses, you will have endless hot water and enjoy satisfying bathing.
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Large power
The power range of the unit must be large enough to support continuous hot water for many bathrooms. But, some tankless water heaters have a large flow rate, but they still cannot be used for whole house especially for large homes use because of their small power.
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Energy efficient
Because of the large power requirement, the heating machines built for large family use are normally propane or gas types. So, a high energy-efficient tankless water heater can not only help save money but also helpful in reducing greenhouse gas emission and carbon dioxide.
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Smart functions
Some of the best electric tankless water heaters for big homes are armed with technological design or smart devices, such as self-modulating system, in order to adjust and maintain water pressure and temperature when the demand of water is high. With smart functions like that, you are able to enjoy stable water flow.
best electric tankless water heater for large homes
Attention:
Unlike point of use tankless water heater, heating machines for large families need to move and offer support hot water for multiple spots. So in installation, you need to consider the waiting time, in other words, the distance between the taps and heating machine. Pick a place that is best for each spot of hot water use.
Types Of Tankless Water Heaters For Large Homes
In totality, there are 3 types of tankless water heaters based on the power source; they are electric type, gas type and propane types.
These are typically considered as being less powerful than natural gas and propane types, so, most of them are designed as a point of use types, or you can carry it fro use in camping and traveling. So, most of the heaters we recommend are propane and gas types.
These are quite the same as natural gas, the energy and power efficiency, and also greenhouse gas emissions.
Being more powerful than other gas types, and using heating costs for long term which is quite cheaper in the long run, most family with 3-4 bathrooms are advised to get a natural gas type to support hot supply of water 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 tankless water heater for large homes
Other Faq
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Are tankless water heaters good for large homes?
Yes, a tankless water heater is more efficient and uses less energy than a conventional water heater, providing a $25 to $107 in annual savings. If your hot water use is low (less than 41 gallons per day), a tankless water heater will be 24% to 34% more efficient.
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What size of tankless water heater do I need?
You need to raise the incoming water temperature from 40 degrees to 105. You’ll need to be able to heat at least 5.2 gallons of water. So you want a tankless water heater that can churn out at least a 60 degree rise in temperature at 5.2 gallons per minute.
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What is the best tankless water heater for my home?
| Best Gas Series for Mid-Sized Homes | Best Gas Series for Large Homes | Best Electric Series for Mid-Sized Homes |
| Takagi K4 | Rheem Professional Prestige Series | Stiebel Eltron Tempra Plus |
| Check price | Check price | Check price |
| Read review | Read review | Read review |
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What size water heater do I need for a family of 5?
A family of 5 will need at least 30-gallon tank water heater to enjoy comfortable hot water.
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What is the best water heater for a large family?
Here are the Best Water Heaters for a large family
| Name | Ratings |
| Stiebel Eltron Tempra Plus 24 | 4.8 |
| Rinnai RUC98iN Ultra Series | 4.8 |
| Rinnai RL94eP Propane | 4.7 |
| Rheem RTG-95XLN | 4.8 |
What We Pick Is…
Among all to rated tankless water heaters types, we would love to recommend the Rinnai RUC98iN Ultra Series Tankless Water Heater for you, 9.8 GPM high flow rate that allows you to enjoy constant 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 strong, durable, sturdy and powerful enough to support more than 2 users and still keep water temperature stable.
Double venting options and natural gas power are needed to help cut down 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, You can browse them freely on Amazon.
best tankless water heater large family
We hope our review of the best tankless water heater for large homes prove helpful for you. See you next week!
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