Takagi Vs Rinnai

Takagi is well-known for its modern technology and high efficiency. It comes with high-quality residential and commercial tankless water heaters with varying features. The company offers eco-friendly products.

Rinnai is a leading tankless water heater brand on the global market. It is perfect for the whole house and commercial. It is also capable enough to support multiple bathroom use. This water heater is more durable and lasts longer.

Our article will help you to find the correct item for your house or other needs.

What is a Tankless Water Heater

A tankless water heater doesn’t come with a storage tank like traditional water heaters. They can’t make hot water and store it until needed. Water isn’t heated until a hot-water tap or appliance using hot water as a dishwasher or clothes washer is turned on.

Is a tankless water heater budget-friendly?

Buying a tankless water heater is higher, but it is more efficient than a storage-tank water heater. The tankless water heater uses less energy and saves you up to $100 on energy costs on average annually. So a tankless water heater is worth it.

Takagi T-H3-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater

Takagi High-Efficiency Natural Gas Indoor Tankless Water Heater can produce around 10 gallons of hot water per minute. This item is ideal for large households where multiple faucets and appliances are being used simultaneously. It comes with unique and advanced condensing technology that allows for highly silent operation.

This tankless water heater includes a self-modulating heating mechanism that gives you a bang for your buck. It features an energy factor of 0.95 for natural gas, making it one of the best energy-saving tankless water heaters.

This water heater requires a special venting and pipe system as well as professional installation. It is designed for both residential and commercial use. It also comes with several handy safety features.

Key Features

  • It comes with High efficient condensing technology
  • Offers enhanced safety features
  • Low NOx Emissions
  • High energy and thermal efficiency


  • Compact and Space-saving
  • Suitable for residential and commercial applications
  • Low gas usage
  • Very quiet unit


  • Expensive
  • Indoor use only

Rinnai V65IN Tankless Water Heater

Rinnai V65IN Tankless Water Heater can handle high capacity and Heats water quickly. The company is widely known for producing tankless water heaters using advanced technology. It is well-known for producing kitchen appliances, heating appliances, rice cookers, flyers, and home appliances.

This water heater is suitable for both indoors and outdoors and is easy to install. It is equipped with Wi-Fi and remote controls. So, it offers you the luxury of controlling the unit from anywhere in the house.

This item comes with efficiency from 82-98% efficiency and has 120,000 to 199,000 BTUs. Its compact design allows for installation in non-traditional spaces. It is ideal for small to medium homes or remodels.

Key Features

  • Flow rate up to Up to 6.5 GPM
  • 10 years Residential Factory Warrant
  • It uses 40% less energy than traditional tanks
  • It can easily replace a 50-gallon tank


  • Save Valuable Space
  • Durable heat exchanger
  • Easy to install and use
  • Innovative features


  • Expensive

Features to consider Takagi vs Rinnai


Takagi water heater provides a 15-year heat exchanger warranty. The company average for heat exchangers is 12 years on heat exchangers.

Rinnai heater provides a five-year contract covering all the aspects of their models. It offers a 10-12 years warranty for its product.


Takagi uses UEF for efficiency. Many brands use the outdated rating of EF for efficiency. It provides indoor and outdoor water heaters that have the same efficiency. Both brands offer high efficiency.


Rinnai tankless water heater is energy-efficient and saves up to 40% more energy than other heaters with the tank. This tankless water heater reduces CO2 emissions. So if you’re worried about environmental health and sustenance, these tankless water heaters can be a good choice.


Buying a Takagi heater can last you a long time because its heat exchangers are made of stainless steel. Both offer higher durability and reliability. You can use these water heaters for at least 12-15 years.


Both brands make the most high-efficient products on the market. Takagi heaters are highly energy-efficient. It comes with modern technology and sturdy materials.

Rinnai offers the tech to heat water only when you need it. This tankless water heater saves your money by reducing electricity bills.


The Takagi water heater is suitable for households. It provides an equal and impressive volume of hot water. Rinnai company provides compact water heaters. It is ideal for small apartments.


Both Tankless Water Heater offers many advantages and a few disadvantages too. Rinnai is widely known for its higher efficiency, higher output flow, and advanced features. If you’re going to an affordable model with excellent quality, Takagi is perfect for you. It comes with good performance, and its features are relatively more straightforward.