In a large family, most people may have the occasion of using multiple bathrooms, or intend to wash dishes or do laundry with hot water when somewhere else is taking a bath. In such conditions, you need a whole house tankless water heater to help provide constant hot water for you.
Whole house propane tankless water heater refers to the heaters that use propane as the main power source. It is more energy-efficient and eco-friendly than electric types. On choosing the best whole house propane tankless water heater, we will give you some tips and reviews as follow:
5 Top Rated Whole House Propane Tankless Water Heaters
Best Whole House Propane Tankless Water Heaters
There are many brands of whole house propane tankless water heaters, and each of them has its own features and advantages, some of which suit you best, but some may have no use for you. Therefore, here we picked 5 best whole house propane tankless water heaters for you and made a review, you can compare the features or advantages of them and choose the most suitable one.
1. Rheem RTG-95XLP Outdoor Tankless Propane Water Heater
Features:
- 9.5 gallons per minute
The flow rate of the unit reaches as high as 9.5 gallons per minute, which is quite high and can be used as commercial tankless water heaters even after cascading. Therefore, it is able to meet the demand for whole-house use perfectly.
- Low NOx design
This water heater can be powered both by natural gas and propane. The low NOx design enables less greenhouse gas emissions. It works on power ranging from 11,000 to 199,900 BTU per hour.
- 120 degrees F maximum temperature
The maximum temperature of the unit reaches 120 degrees F, however, it enables remote control, and maximum temperature can be up to 140 degrees F with remote control. But you need to buy it separately.
Pros:
- Large flow range
- Most powerful one in full line of Rheem heaters
- Energy efficient
- Compact shape and lightweight
- Installed outdoor
- Gas and propane available both
Cons:
Need to be installed by professionals
Features:
- 8.4 gallons per minute
8.4 gallons per minute flow rate of this whole house propane tankless water heater enables to support two bathrooms at the same time in the warm areas. And you can also use kitchen faucets, no fluctuations occur in the process.
- Smart technology
ComfortFlow technology and ultra condensing system are both equipped on the heating machine. It has a built-in buffer tank and re-circulation pump to help eliminate cold water sandwich, and meanwhile, fasten the heating time of the heater.
- Both indoor and outdoor installation
This Navien tankless water heater can be installed both indoor and outdoor, if you lack the professional knowledge on it, you can get a professional to help to install for you.
Pros:
- low NOx emissions
- ComfortFlow technology
- Ultra condensing system
- Smart digital control panel, showing temperature and error code
- Large water flow rate for whole-house use.
Cons:
A bit expensive
3. Rinnai V65EP Outdoor Tankless Propane Water Heater
Features:
- 6.6 gallons per minute
The flow rate of this Rinnai tankless water heater is 6.6 gallons per minute, not so large as the other two recommended tankless water heaters, but is still able to meet the demand of one bathroom and two kitchen faucets use.
- Temperature lock
It is a relatively smart tankless water heater, much-advanced technology such as temperature lock is equipped, in order to avoid the unintentional touch. Besides, it is remote control enabled.
- 0.82 energy efficient
Thermal efficiency reaches 0.82, which is on the average level. So this is also an energy-efficient tankless water heater. The maximum BTU is 150000.
Pros:
- Natural gas and propane available both
- Low NOx design
- Safe installation
- Remote control enabled
- Low working noise
Cons:
Water gets cold again once you turn the tap off
4. Rinnai RL94iP Propane Tankless Water Heater
Feature:
- 9.4 gallons per minute
This is another high flow rate whole house propane tankless water heater, the maximum flow rate reaches 9.4 gallons per minute. It is able to support three or four bathrooms in warm areas and two bathrooms in cold areas.
- Easy digital control
The temperature of water shows on the digital control panel, and error codes show on when something wrong happens. The adjustment is easily operated, and you can change the temperature 1 degrees increment one time.
- Direct power vent
It adopts direct power vent, the closed system enables no outer cold air to get into the machine after it turns off. No disgusting smell because of the direct venting system.
Pros:
- High efficient
- Less fuel consumption
- No standing heat loss
- Constant hot water supply
- Easy operated digital control
Cons:
Coldwater sandwich
5. Takagi T-KJr2-IN-LP Indoor Propane Tankless Water Heater
Features:
- 6.6 gallons per minute flow rate
The flow rate of this Takagi tankless water heater reaches 6.6 gallons per minute, it is able to support one bathroom and two kitchen faucets at the same time, thus can be used for small or middle size family perfectly.
- 150 degrees F temperature
The maximum temperature of this unit is 150 degrees F, it meets the demand of basic home use, the gas consumption is up to 140000 BTU and the energy-efficient reaches 0.81.
- Self-modulating device
The self-modulating device of this unit is used to monitor and adjust water temperature all the time, it is able to reduce water fluctuation smartly.
Pros:
- Digital remote control
- Demand minimal maintenance
- Compact size
- High energy efficient
- Support multiple bathrooms and sinks use the same time
Cons:
Working noise is pretty loud
How To Choose Best Whole House Propane Tankless Water Heater
1. Size
Compared with portable propane tankless water heater, the size of whole house types are bigger and occupy much more space. But of course, they are far smaller than tank water heaters. You have more options, some are designed small enough for a tiny home, while some are much bigger to support a large flow rate. Therefore, you should figure out the approximate size that you want.
2. Flow rate
The flow rate of the whole house propane tankless water heater needs to be large enough, or it is not capable enough to provide constant hot water when multiple bathrooms or faucets are used. So the flow rate should be large enough, reaching at least 6 gallons per minute, so it is able to support one bathroom and kitchen faucet easily.
3. Energy efficient
The energy-efficient tankless water heater is able to save much money for you on heating bills. Besides, it is more environmentally friendly. For some best whole house propane tankless water heaters, the thermal efficiency reaches as high as 0.95.
4. Waiting time
For the whole house propane tankless water heater, the biggest problem may be the long waiting time, hot water flows through the long pipe, and then transferred to the destination. For different whole house tankless water heaters, the waiting time can differ a lot, various from 5 seconds to 1 minute. The longer waiting time is, the more water is wasted.
Features Of Whole House Propane Tankless Water Heater
1. Large flow rate
The average flow rate of the whole house propane tankless water heater is 6-8 gallons per minute, some are even 9 gallons per minute. High flow rate enables constantly hot water for you.
2. Eco-friendly
Whole house propane tankless water heater adopts propane as a major power source, it is cleaner and does little pollution to environmental, thus is helpful for environmental protection.
3. Meet multiple needs
For many people especially large families, there are multiple bathrooms or kitchen faucets, one whole house propane tankless water heater is able to solve all the indoor needs.
4. Large size
Compared with portable tankless water heater, the size of which is large. But when comparing it with a tank water heater, it is also compact and occupies little space.
5. Large temperature range
The temperature range of the whole house propane tankless water heater is normally between 90 and 140 degrees F. It is able to meet the demand for basic needs for daily life.
Attention:
There are two methods of installation, one is an indoor installation, while the other is an outdoor installation. For outdoor tankless water heaters, they should be installed on the outer wall of the bathroom for fast hot water supply.
Last Words on Best Whole House Propane Tankless Water Heater
The using life and working performance of whole house tankless water heater are related to the installation to some extent, if installed in the wrong way, it may easily get broken. Therefore, if you lack enough knowledge of tankless heater installation, you can get a professional to help you.
Here we selected the top 3 best whole house propane tankless water heaters for you:
| Tankless Water Heater | Best Type |
| Best large flow rate type | Rheem RTG-95XLP Outdoor Tankless Propane Water Heater |
| Best energy efficient type | Navien NPE-180A Premium Condensing Tankless Gas Water Heater |
| Best one for middle or small family use | Takagi T-KJr2-IN-LP Indoor Propane Tankless Water Heater |
If you still have trouble in finding the best whole house propane tankless water heater, or want to get more information about each product recommended before, please feel free to check it on Amazon. Besides, there will always be a large discount on Amazon, which will help you save a large amount of money for you.