Top 9 Non-Condensing Tankless Water Heaters of 2024

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

Steve Donaldson Master HVAC technician
Steve Donaldson
Master HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

As a specialist in the field of tankless water heaters, I'm excited to present to you the top 9 non-condensing tankless water heaters of 2024. In this roundup post, we will explore the best options available on the market that offer exceptional performance and efficiency. Whether you're looking to upgrade your current water heating system or simply curious about the latest advancements in technology, this article will provide you with valuable insights and expert recommendations. So, let's dive right in and discover the top non-condensing tankless water heaters that you should consider for your home.

1
Rinnai V65iN Tankless Water Heater
✯ Top-notch choice ✯
BUY NOW Amazon.com
9.1
2
Rinnai RE140iP Propane Tankless Water Heater
8.9
3
Rheem RTG-70XLP-3 Tankless Propane Water Heater
Conclusion: Reliable and efficient
BUY NOW Amazon.com
8.7
6
Rheem Tankless Gas Water Heater, High Efficiency
Final Verdict: Efficient & Costly
BUY NOW Amazon.com
8.9
1

Rinnai V65iN Tankless Water Heater

 in stock
Amazon.com
9.1
Top-notch choice
The Rinnai V65iN Non-Condensing Natural Gas Tankless Water Heater is an excellent choice for those looking for a space-saving and energy-efficient water heating solution. With its smart features and high water flow rate of 6.5 GPM, it provides endless hot water and reliable performance. The only downsides are the lack of included extension and power cables, as well as potential issues with shipping and customer service when purchasing from efaucets.
Efficient and Convenient
  • Space-saving design
  • Smart features
  • Indoor installation
  • High water flow rate (6.5 GPM)
  • Efficient and reliable performance
  • Easy to connect with gas, inlet, and outlet pipes
  • Provides hot water quickly once it's running
Common Complaints
  • Drawbacks:
  • The package does not include an extension cable for the control pad and a power cable, which may require additional purchases
  • Some customers have reported slow shipping and unhelpful customer service from efaucets, so it may be better to purchase directly from Rinnai for a smoother buying experience

The Rinnai V65iN Non-Condensing Natural Gas Tankless Water Heater is the ultimate solution for energy-conscious homeowners seeking a smart, compact, and efficient water heating system. With advanced features and a durable design, this tankless water heater provides an endless supply of hot water for households of all sizes. Its space-saving design conserves energy by heating water only when necessary, ensuring optimal energy efficiency. With a high-performance 6.5 GPM hot water flow rate, you can enjoy a powerful and uninterrupted stream of hot water throughout your home. The unit also comes with a guaranteed warranty, offering peace of mind. For added convenience, Wi-Fi monitoring is available with the Controlr module (not included), allowing you to monitor and control your water heater from anywhere. Rinnai's non-condensing tankless water heater models offer advanced technology in water heating, providing a longer lifespan for the elements compared to traditional tank heaters.

Efficient and reliable water heating
  • Endless hot water flow
  • Space-saving design
  • Indoor installation
  • Energy efficient
  • Durable construction
  • Smart features
2

Rinnai RE140iP Propane Tankless Water Heater

$805.70  in stock
Amazon.com
as of March 13, 2025 9:17 pm
8.9
The Rinnai RE140iP Non-Condensing Propane Tankless Water Heater is an easy-to-install, energy-efficient option that provides hot water on demand. It is affordable compared to other high-end water heaters and works well in climates that don't get extremely cold. However, it could benefit from clearer installation requirements and does not come with an exhaust pipe, which requires an additional purchase.
Efficient and Reliable
  • Easy to install, even for DIYers
  • Provides hot water on demand
  • Affordable compared to other high-end conventional water heaters
  • Works better than previous expensive water heater
  • Suitable for climates that don't get extremely cold
Drawbacks
  • Installation requirements could have been more clearly explained beforehand
  • Does not come with exhaust pipe, requiring an additional purchase

The Rinnai RE140iP Non-Condensing Propane Tankless Water Heater is a smart and efficient solution for your hot water needs. With its improved design, this water heater only heats water when necessary, conserving energy and saving you money. The LED display provides helpful service reminders and error codes, making it easier to maintain. Installation is made faster and easier with the cleaner internal layout and sliding bracket. While it may require some modifications and the use of Rinnai exhaust pipe, customers have found that it is manageable for a DIY project. Overall, this tankless water heater delivers hot water on demand and is a great option for those looking for a reliable and affordable solution.

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Efficient and Compact Solution
  • Smart design conserves energy
  • Speedy installation and enhanced serviceability
  • LED screen for service reminders and error codes
  • Endless supply of hot water
3

Rheem RTG-70XLP-3 Tankless Propane Water Heater

$804.00
$683.60
 in stock
Amazon.com
as of March 13, 2025 9:17 pm
8.7
Conclusion: Reliable and efficient
The Rheem RTG-70XLP-3 is a high efficiency tankless water heater that provides a continuous supply of hot water, making it perfect for outdoor installation. While it offers excellent performance, the limited warranty coverage and the need for professional installation may be a downside.
Efficient and Compact
  • Continuous hot water supply
  • High efficiency operation
  • Outdoor installation capability
Cons
  • Limited warranty coverage
  • Requires professional installation

The Rheem RTG-70XLP-3 High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water Heater is the perfect solution for continuous hot water in your home. With a maximum flow rate of 7 gallons per minute, it provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher. The compact size and wall mount design allow for installation in small spaces, saving valuable floor space. Plus, with its high efficiency, the water heater only runs when needed, helping you save on energy costs. Enjoy efficient, continuous, no-wait hot water with the Rheem RTG-70XLP-3.

Top-of-the-line Propane Water Heater Features
  • Continuous hot water supply
  • High efficiency operation
  • Non-condensing design
  • Outdoor installation capability
  • Liquid propane fuel option
  • 7.0 GPM water flow rate
$683.60
$804.00
in stock
as of March 13, 2025 9:17 pm
Amazon.com
4

Rheem Tankless Gas Water Heater, High Efficiency, Outdoor

$804.00
$700.20
 in stock
Amazon.com
as of March 13, 2025 9:17 pm
8.5
In conclusion
The Rheem RTG-70XLN-3 is a highly efficient and convenient tankless water heater that offers a continuous supply of hot water, making it perfect for outdoor installation. However, its limited capacity and non-condensing technology may be drawbacks for some users.
Efficient and Convenient
  • Continuous hot water supply
  • High energy efficiency
  • Outdoor installation capability
Limitations
  • Limited capacity (7.0 GPM)
  • Non-condensing technology

The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater is the perfect solution for continuous hot water in your home. With a maximum flow rate of 7 gallons per minute, it provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher. The compact size and wall mount design allow for installation in small spaces, saving valuable floor space. Plus, with its high efficiency, the water heater only runs when needed, saving you energy costs. Enjoy efficient, continuous, no-wait hot water with Rheem's RTG-70XLN-3.

Efficient Outdoor Water Heating
  • Continuous hot water supply
  • High energy efficiency
  • Outdoor installation capability
  • Non-condensing design
  • Natural gas powered
  • Water-saving technology
5

Rheem RTG-70DVLN-3 Tankless Gas Water Heater

$804.00  in stock
Amazon.com
as of March 13, 2025 9:17 pm
8.1
The Rheem RTG-70DVLN-3 is a highly efficient indoor tankless water heater that provides a continuous supply of hot water and can be used for various applications. Its water-saving technology is a great feature, although the limited water flow rate and the need for professional installation may be drawbacks to consider.
Efficient and Reliable
  • Continuous hot water supply
  • High energy efficiency
  • Multiple application usage
Common Issues
  • Limited water flow rate
  • Requires professional installation

The Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater is an excellent choice for those looking for continuous hot water without any wait. With a maximum flow rate of 7 gallons per minute, it provides enough hot water for your entire home, even when multiple applications are being used simultaneously. Its compact size and wall mount feature allow for easy installation in small spaces, saving valuable floor space. This high-efficiency water heater only runs when needed, helping you save on energy costs. Additionally, it features exclusive Hot Start Programming to eliminate cold water bursts and LeakGuard Leak Detection and Prevention for peace of mind. Enjoy efficient, continuous hot water with the Rheem RTG-70DVLN-3.

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Efficient and Reliable Performance
  • Continuous hot water supply
  • High energy efficiency
  • Multiple application usage
  • Water-saving technology
6

Rheem Tankless Gas Water Heater, High Efficiency

$953.00
$844.56
 in stock
Amazon.com
as of March 13, 2025 9:17 pm
8.1
Final Verdict: Efficient & Costly
The Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater provides continuous hot water supply for the entire house, with high energy efficiency and on-demand operation. However, it has a limited availability of spare parts and a higher initial cost compared to traditional water heaters.
Efficient and Reliable
  • Continuous hot water supply
  • High energy efficiency
  • On-demand operation
Cons
  • Limited availability of spare parts
  • Higher initial cost compared to traditional water heaters

The Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater is designed to provide continuous hot water with minimal wait time, saving you time, energy, and water. With its exclusive Hot Start Programming, the water heater stays in a ready state, eliminating cold water bursts with back-to-back uses. You can enjoy efficient, continuous, and no-wait hot water throughout your entire home. The compact size and wall mount feature allow for installation in small spaces, saving valuable floor space. This high efficient water heater only runs when needed, helping you save on energy costs. Additionally, it provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher. With the Rheem RTG-84XLN-3, you can have continuous hot water and comfort whenever you need it.

Efficient and Reliable Heating Solution
  • Continuous hot water supply for the entire house
  • High energy efficiency to save on energy costs
  • Only runs when hot water is needed to save energy
  • Water-saving feature to conserve water
7

Rheem Tankless Gas Water Heater: High Efficiency, Indoor, 9.5 GPM

$854.10  in stock
Amazon.com
as of March 13, 2025 9:17 pm
8
The Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater is a great choice for those looking for a continuous hot water supply and energy-saving features. It provides hot water for multiple applications simultaneously, although it does come with a higher initial cost and limited warranty coverage.
Efficient and Reliable
  • Continuous hot water supply
  • High efficiency and energy-saving
  • Provides hot water for multiple applications simultaneously
Drawbacks
  • Limited warranty coverage
  • Higher initial cost

The Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater is a compact and efficient solution for providing continuous hot water in your home. With a maximum flow rate of 9.5 gallons per minute, this water heater can easily handle multiple applications such as showers and dishwashers, ensuring that you never run out of hot water. The high efficiency design only runs when needed, helping to save on energy costs. Additionally, the included Hot Start Programming eliminates cold water bursts, while the Overheat Film Wrap provides heat exchanger overheat protection. With its small size and wall mount installation, this water heater saves valuable floor space. Enjoy efficient, continuous, and no-wait hot water throughout your entire home with the Rheem RTG-95DVLN-3.

Powerful and Energy-Efficient
  • Continuous hot water supply for the entire house
  • High efficiency and energy-saving
  • Non-condensing indoor tankless design
  • Natural gas powered
  • Provides hot water for multiple applications simultaneously
  • Water-saving feature to reduce water consumption
8

Rheem Tankless Propane Water Heater

$919.71  in stock
Amazon.com
as of March 13, 2025 9:17 pm
7.9
Overall
The Rheem RTG-84DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater provides a continuous hot water supply for the entire house, while also offering high efficiency and energy cost savings. However, it has a limited capacity and requires professional installation.
Efficient and Reliable
  • Continuous hot water supply
  • High efficiency
  • Energy cost savings
Drawbacks
  • Limited capacity
  • Requires professional installation

The Rheem RTG-84DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater is a compact and efficient solution for continuous hot water in your home. With a maximum flow rate of 8.4 gallons per minute, it provides enough hot water for your entire house, even when multiple applications are being used simultaneously. The Hot Start Programming feature eliminates cold water bursts, ensuring a comfortable and uninterrupted hot water experience. This water heater is energy-efficient, running only when needed, which helps you save on energy costs. It also comes with LeakGuard Leak Detection and Prevention, giving you peace of mind by monitoring for potential leaks. With its wall-mount design and small size, it saves valuable floor space and can be easily installed in small spaces. Made by Rheem, a trusted manufacturer known for their quality products, this tankless water heater is a reliable choice for efficient and continuous hot water.

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Efficient and Eco-Friendly Heating Solution
  • Continuous hot water supply for the entire house
  • High efficiency, saving energy costs
  • Only operates when hot water is needed
  • Water-saving technology
$919.71
in stock
as of March 13, 2025 9:17 pm
Amazon.com
9

Rheem RTG-95XLN-3 Gas Tankless Water Heater

$1,219.98  in stock
Amazon.com
as of March 13, 2025 9:17 pm
7.9
Great choice!
The Rheem RTG-95XLN-3 is a high-efficiency tankless water heater that provides a continuous hot water supply and can be installed outdoors. It is a great choice for those looking for energy efficiency and convenience, although it may have limited installation options and a higher upfront cost compared to traditional water heaters.
Efficient and Reliable
  • Continuous hot water supply
  • High efficiency
  • Outdoor installation capability
Drawbacks
  • Limited outdoor installation options
  • Higher upfront cost compared to traditional water heaters

The Rheem RTG-95XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater is the perfect solution for continuous hot water in your home. With a maximum flow rate of 9.5 gallons per minute and a maximum temperature of 140 degrees Fahrenheit, this water heater provides enough hot water for your entire house, even when using multiple applications such as a shower and dishwasher. Its high efficiency design only runs when needed, helping you save on energy costs. The compact size and wall mount installation allow for easy placement, saving valuable floor space. With Rheem's exclusive Hot Start Programming and Overheat Film Wrap, you can enjoy efficient, continuous, and no-wait hot water while having peace of mind.

Efficient and Eco-Friendly
  • Continuous hot water supply
  • High efficiency
  • Non-condensing
  • Outdoor installation capability
  • Uses natural gas as fuel
  • Provides 9.5 gallons per minute flow rate

Comparing Tankless Water Heater Options

Steve Donaldson Master HVAC technician
Steve DonaldsonMaster HVAC technician at Quality Comfort Home Services

I am Steve Donaldson, a Master HVAC technician with a rich background in addressing heating issues, especially when it comes to various types of water heaters. Leveraging my extensive expertise, I offer insights and advice to help individuals maintain a warm and secure home environment. Reach out to me at steve.donaldson@tedreviews.com for valuable tips from a seasoned professional in the industry.

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8 Comments
Show all Most Helpful Highest Rating Lowest Rating Add your review
  1. I’m curious about the pricing and overall value of these tankless water heaters. Are they more cost-effective compared to traditional tank water heaters?

  2. Based on your research, which specific tankless water heaters would you recommend for a household with 3-4 members? Any particular brand or model that stands out?

  3. I recently installed the Rheem RTG-70DVLN-3 tankless gas water heater and I’m really impressed with its performance. Highly recommended!

    • Thank you for sharing your experience! It’s great to hear that you’re satisfied with the Rheem RTG-70DVLN-3 tankless gas water heater. It’s definitely a reliable choice.

  4. Do you have any tips or suggestions for selecting the best non-condensing tankless water heater? What factors should I consider before making a purchase?

  5. Have you considered reviewing the latest models of these tankless water heaters? It would be interesting to know if there are any notable improvements or new features.

  6. Can you provide more details about the features and specifications of each water heater? I’m particularly interested in the flow rate and energy efficiency.

  7. I would personally recommend the Rinnai V65iN tankless water heater. It’s a trusted brand and has been performing exceptionally well in my home.

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