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Rinnai V65 Hot Water Heater: Full Review

This is a type of water heater that is designed to provide the homeowner with hot water without the need for a large storage tank. 

With this type of hot water heater it will only heat water when necessary instead of like the traditional water heater. 

The traditional one heats the water and stores it in a tank. 

Because tankless hot water heater heats water as you need it, they do not need a reserve tank to store it in. 

When you need hot water you will turn on the hot water tap, the cold water flows through the hot water heater. 

The heater senses the water so it will either activate an electric element or a gas burner in the unit. 

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The water is heated as it passes through the unit and when it gets to you it will be just as hot as if it was coming from a regular hot water heater.

Turn off the tap and the water stops flowing through the heat and the element automatically shuts off.

The Rinnai V65 series is the right combination of value, high efficiency, and comfort in a propane gas tankless water heater. 

The heater is available at Amazon here, but read on for some more information about it, including the pros and cons.

The features of Rinnai V65 Water Heater

The measurement of this tankless water heater is 13.9” x 8.8” x 23.6” and weighs 49.6 pounds. 

Rinnai is the number one top selling company of tankless water heaters in North America so when you buy from them you can do it with confidence. 

Rinnai uses smart technology like WiFi monitoring so they can monitor the efficiency of your product and address any issues that could happen before they do so that you will never experience an interruption in service.

When you purchase a Rinnai tankless water heater, if something go wrong the components of this product can easily be swapped for a new part so you do not have to purchase a brand new tankless water heater. 

The life expectancy for this tankless product is twenty years where as a traditional tank only lasts for eight to ten years. 

Buy with confidence and know that you will not only save money but worry in the long run.


  • Produces two to five gallons of hot water per minute
  • Perfect for indoor locations
  • Ideal for medium or small homes with one to two and a half bathrooms
  • Delivers up to 6.6 gallons per minute
  • Ultra compact
  • Consistent preset temperatures of 120 degrees but can be set up to 140 degrees by installer
  • Saves energy as it uses 40% less energy that a traditional tank
  • Saves 16 square feet of floor space and can be installed in a closet, attic, or crawl space or even on the wall.
  • Endless hot water so you never run out
  • Recirculates hot water through your pipes to get you hot water quicker
  • The CO2 emissions are cut
  • No chance of the tank exploding or leaking causing water damage
  • Lower risk of being exposed to toxic materials as the water is not stored in a tank
  • Mobile app feature has schedules and timers so you can put the system into vacation mode remotely


  • Needs a special vent system due to the high-powered burners, which is a sealed, dedicated vent system that have to be installed professionally.
  • If they are a natural gas burner you may need a larger diameter gas pipe.
  • If you do not install it yourself there are installation costs.
  • The product is higher than traditional hot water heaters
  • Cannot provide hot water if there is a power outage
  • Can be inconsistent water temperature if you are using multiple things such as a washer and shower at the same time
  • May need special wiring installed to handle the increased load
  • If you have a large family or large house you may need to install more than one tankless water heater.
  • The smaller units will generally only serve one faucet at a time so if you want to use hot water for more than one thing at a time you will need to get a bigger one.

In conclusion

Rinnai V Series HE Tankless Hot Water Heater Indoor Installation review

The Rinnai V65 tankless water heater, in the long run, is a good buy but you need to consider the number of appliances that will use the hot water, how many bathrooms, and how many people will be need hot water for showers to know the correct size. 

The main con is the upfront cost. 

For a tankless water heart they can cost $125 up to $1,000 for the electric model and from $500 to $2,000 or more for the ones that use propane gas. 

If you need to have them installed it can cost from $500 to $700 for the electric model and $600 to $1,500 for the gas model. 

Yes, the tankless water heater can save energy and money but is the higher price for them and the installation cost worth it? 

Do your research before making your purchase. 

As you look at the pros and cons for the Rinnai V65, you can see that there are more pros than cons, making to a worth-while investment plus they have the technology to monitor your tankless water heater and detect any issues so that it can be taken care of before it becomes a major issue. 

Their parts are also replaceable so you do not have to purchase a new tankless water heater if something goes wrong.

Rinnai is the number one seller of tankless water heaters in the United States.

The company has high standards for producing high quality products and all adhere to the standards of American National Standards Institute as they are manufactured in China. 

Every tankless water heater has gone through a series of rigorous testing so you know when you buy a Rinnai V65 tankless water heater you are getting the best for your money.

If you are going tankless, this would be the one to purchase. You can check it out at Amazon here.