Best tankless water heaters for a large home

Top 5 Best Tankless Water Heaters for a Large Home

  • We all know how important water heaters are. They’ve become an integral part of every household in the United States. This article explores the top 5 best tankless water heaters for a large home.

Some appliances have become so important that they are no longer considered luxury items but necessities. The water heater is one of those necessary appliances for every household nationwide. They’re so important that a report from Energy Star reveals that 7-7.8 million units of these appliances are replaced annually in the United States alone.

Another report from the United States Department of Energy reveals that water heating accounts for about 20% of the total energy consumption in the average household. 20% is a huge number, considering how much other appliances around the house use energy. This is why we’ve been preaching about tankless water heaters, which are way more energy-efficient than their traditional tank-style counterparts.

A tankless water heater should be your top priority for a large home that consumes about 41 gallons of hot water daily. It is about 24-34% more energy-efficient than when you’re using a traditional water heater. To help you save more money than you could imagine on your electricity bill, we’ll explore some of the best tankless water heaters for a large home in this article.

Top 5 Best Tankless Water Heaters for a Large Home

Rinnai RUC98iN Ultra Series Tankless Water Heater

The Rinnai RUC98iN is a powerful tankless water heater with a high hot water flow rate, making it ideal for large households. It is considered one of the best options for a large home because it offers efficient heating with condensing technology, ensuring energy savings. This Rinnai tankless water heater is everything a good water heater should be. Quality flow rate, easy installation, and durability are some of its strongest points. The unit has a compact design, allowing for flexible installation options. Key features include a digital controller for precise temperature control, multiple safety features, and a durable stainless steel heat exchanger.


  • Precise temperature control
  • Ultra-low NOx emissions
  • Energy Star certification
  • MC-91-2US controller
  • Twin-pipe model

Nortiz NRC66DVNG Condensing Direct Tankless Water Heater

The Noritz NRC66DVNG is a reliable tankless water heater suitable for large homes. It operates with natural gas and offers a high hot water flow rate. This condensing unit has efficient heating technology and can be installed indoors with its direct vent system. It features a user-friendly digital display for temperature adjustment and diagnostic codes for easy troubleshooting. If you ever run into any issues with the heater, you won’t have any problem troubleshooting it, thanks to the availability of diagnostic codes. Many people love this Noritz water heater, not because it’s a Noritz product, but because it gives other tankless water heaters in its class a run for their money.


  • Remote thermostat
  • Low Nox
  • High efficiency
  • Endless hot water

Rheem RTGH-95DVLN Natural Gas Tankless Water Heater

The Rheem RTGH-95DVLN is a high-performance tankless water heater for large residential applications. If you have a large family and want a tankless water heater to serve the whole house comfortably, this Rheem water heater is your best bet. It offers a continuous supply of hot water with a high flow rate. This unit features a self-diagnostic system for easy maintenance and a built-in condensate neutralizer to prevent acidic condensation. With its low NOx emissions, it is environmentally friendly. It’s also one of the few tankless water heaters worth more than they initially cost.


  • Intelligent electronic controls
  • Compact design
  • Continuous hot water

EcoSmart ECO 27 Tankless Water Heater

Ecosmart is one of the biggest names in the tankless water heater market, and the Ecosmart ECO 27 is an electric tankless water heater that has been doing justice to the brand’s core values. This water heater is perfect for large homes with large families. It provides endless hot water with its self-modulating technology, adjusting power consumption based on demand. This unit has a compact design and can be installed in various locations. It offers digital temperature control and is energy-efficient, saving up to 50% on water heating costs.


  • Monitored water temperature
  • Controlled flow rate
  • Consistent performance
  • Sleek design

Steibel Eltron Tempra 36 Plus Tankless Water Heater

With 36kW of power, the Steibel Eltron 36 Plus Tankless Water Heater is regarded as one of the most energy-efficient and powerful water heaters on the market. Besides being suitable for large households, this powerful tankless water heater is also suitable for commercial use. The Steibel 36 Plus features a constant flow of hot water with advanced flow control technology, which is one of its best features. This unit has a sleek and compact design, allowing for space-saving installation. It features a digital temperature display and can be used for residential and commercial applications.


  • Electronic switch for silent operation
  • Copper-sheathed heating element
  • Easy installation
  • Digital temperature controls
  • Advanced flow control

Final Thoughts

It is not debatable that when you have a large family, the best option is a tankless water heater that provides enough hot water for everyone in your household. However, we understand that getting your hands on the best tankless water heater for a large home can be daunting, especially with so many options. To help you avert that stress, we’ve reviewed some of the best tankless water heaters for a large home in this article. We hope you consider the necessary factors before deciding which is best for your household. Don’t forget to consider factors like size, price, energy efficiency, durability, and warranty before you make your final decision.

Frequently Asked Questions

Do tankless water heaters work well in large homes?

Yes, they work absolutely well! However, you must ensure you get your hands on the right product to avoid inconveniences. You may save money and resources by choosing the right tankless water heater. So, do your homework properly before making a decision.

What is the most reliable brand of tankless water heater?

While it’s hard to say which brand is the most reliable, some brands have proven reliable. Rheem, Noritz, Ecosmart, Bosch, and Rinnai are some of the best and most reliable brands of tankless water heaters.

Can you run out of hot water with a tankless water heater?

It’s hard to imagine running out of hot water with a tankless water heater, but it’s not impossible. In rare cases of malfunction or when the power supply goes off, you may have to look for alternate ways to get your hot water needs.

What is the downside of a tankless water heater?

The only major downside of a tankless water heater is that it could wear out if the demand for it is too much. This is why getting your hands on a quality tankless water heater that will last you a while is advisable.

Can you run two showers with a tankless water heater?

Yes, you can. Depending on the capacity, you can run as many showers as the tankless water heater can handle.