Best Whole House Propane Tankless Water Heater

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 constantly hot water for you.

Whole house propane tankless water heater refers to the heaters that use propane as main power source. It is more energy efficient and eco-friendly than electric types. On choosing best whole house propane tankless water heater, we will give you some tips and reviews as follow:

Best Whole House Propane Tankless Water Heaters

There are many brands of whole house propane tankless water heaters, and each of them have their 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

whole house propane tankless water heater reviews
best whole house propane tankless 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 of whole house use perfectly.

  • Low NOx design

This water heater can be powered both by natural gas and propane. The low NOx design of it 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:

  1. Large flow range
  2. Most powerful one in full line of Rheem heaters
  3. Energy efficient
  4. Compact shape and light weight
  5. Installed outdoor
  6. Gas and propane available both

Cons:

Need to be installed by professionals


2. Navien NPE-180A Premium Condensing Tankless Gas Water Heater

whole house propane tankless water heater reviews
whole house propane tankless hot water heater

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 the same time in the warm areas. And you can also use kitchen faucets, no fluctuations occurs in the process.

  • Smart technology

ComfortFlow technology and ultra condensing system are both equipped on the heating machine. It has 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 of the professional knowledge on it, you can get a professional to help installing for you.

Pros:

  1. low NOx emissions
  2. ComfortFlow technology
  3. Ultra condensing system
  4. Smart digital control panel, showing temperature and error code
  5. Large water flow rate for whole house use.

Cons:

A bit expensive


3. Rinnai V65EP Outdoor Tankless Propane Water Heater

whole house propane tankless hot water heater
best whole house propane tankless water heater


Features:

  • 6.6 gallons per minute

Flow rate of this Rinnai tankless water heater is 6.6 gallons per minute, not so large as 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, many advanced technology such as temperature lock is equipped, in order to avoid the unintentionally 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. Maximum BTU is 150000.

Pros:

  1. Natural gas and propane available both
  2. Low NOx design
  3. Safe installation
  4. Remote control enabled
  5. Low working noise

Cons:

Water gets cold again once you turn the tap off


4. Rinnai RL94iP Propane Tankless Water Heater

whole house propane tankless water heater
whole house propane tankless hot 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

Temperature of water shows on the digital control panel, and error codes shows on when something wrong happens. The adjustment is easy 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 gets into the machine after it turns off. No disgusting smell because of the direct venting system.

Pros:

  1. High efficient
  2. Less fuel consumption
  3. No standing heat loss
  4. Constant hot water supply
  5. Easy operated digital control

Cons:

Cold water sandwich


5. Takagi T-KJr2-IN-LP Indoor Propane Tankless Water Heater

best whole house propane tankless water heater
whole house propane tankless water heater reviews

Features:

  • 6.6 gallons per minute flow rate

Flow rate of this Takagi tankless water heater reaches 6.6 gallons per minute, it is able to support one bathrooms and two kitchen faucets the same time, thus can be used for small or middle size family perfectly.

  • 150 degrees F temperature

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

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:

  1. Digital remote control
  2. Demand minimal maintenance
  3. Compact size
  4. High energy efficient
  5. 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, 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 tiny home, while some are much bigger to support large flow rate. Therefore, you should figure out the approximate size that you want.

2. Flow rate

The flow rate of whole house propane tankless water heater needs to be large enough, or it is not capable enough to provide constantly 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

Energy efficient tankless water heater is able to save much money for you on heating bills. Besides, it is more environmental friendly. For some best whole house propane tankless water heaters, the thermal efficiency reach as high as 0.95.

4. Waiting time

For whole house propane tankless water heater, the biggest problem may be the long waiting time, hot water flows through long pipe and then transferred to destination. For different whole house tankless water heaters, the waiting time can be differ a lot, various from 5 seconds to 1 minute. The longer waiting time is, the more water is wasted.

whole house propane tankless hot water heater
best whole house propane tankless water heater

Features Of Whole House Propane Tankless Water Heater

1. Large flow rate

Average flow rate of whole house propane tankless water heater is 6-8 gallons per minute, some are even 9 gallons per minute. High flow rate enables to constantly hot water for you.

2. Eco-friendly

Whole house propane tankless water heater adopts propane as major power source, it is more clean and do 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 tank water heater, it is also compact and occupies little space.

5. Large temperature range

Temperature range of whole house propane tankless water heater is normally between 90 and 140 degrees F. It is able to meet the demand of basic needs for daily life.

Attention:

There are two methods of installation, one is indoor installation, while the other is outdoor installation. For outdoor tankless water heaters, they should be installed on the outer wall of bathroom for fast hot water supply.

whole house propane tankless water heater reviews
whole house propane tankless water heater

Last Words On Best Whole House Propane Tankless Water Heater

The using life and working performance of whole house tankless water heater is related to the installation to some extent, if installed in wrong way, it may easily get broken. Therefore, if you lack of enough knowledge on tankless heater installation, you can get a professional to help you.

Here we selected top 3 best whole house propane tankless water heaters for you:

Tankless Water Heater Best Type
Rheem RTG-95XLP Outdoor Tankless Propane Water Heater Best large flow rate type
Navien NPE-180A Premium Condensing Tankless Gas Water Heater Best energy efficient type
Takagi T-KJr2-IN-LP Indoor Propane Tankless Water Heater Best one for middle or small family use

If you still have trouble in finding the best whole house propane tankless water heater, or want to get more information about each products recommended before, please feel free to check it on Amazon. Besides, there will always be large discount on Amazon, which will help you save large amount of money for you.