Top 7 Picks for the Best 10 GPM Tankless Water Heater

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.

Hey there! Looking for the best tankless water heater that delivers a whopping 10 gallons per minute (GPM)? Well, you're in luck! In this post, I've rounded up the best 10 picks for the most efficient and reliable tankless water heaters out there. Whether you're upgrading your home or looking to improve your commercial space, these options are sure to keep the hot water flowing. So, let's dive right in and find the perfect 10 GPM tankless water heater for you!

1
Rinnai RU180iP Tankless Water Heater
✯ Reliable and Efficient ✯
BUY NOW Amazon.com
8.9
3
Rinnai RU199iN Tankless Water Heater
Reliable and efficient
BUY NOW Amazon.com
8.9
6
Rheem Tankless Gas Water Heater - RTGH-RH10DVLN
Overall, a solid choice
BUY NOW Amazon.com
8
7
Takagi Tankless Water Heater
7.8
1

Rinnai RU180iP Tankless Water Heater

 in stock
Amazon.com
8.9
Reliable and Efficient
The Rinnai RU180iP Condensing Tankless Hot Water Heater delivers endless hot water flow with easy installation and efficient performance. While some users experienced a slightly longer delay for hot water on cold startup and missing parts during purchase, overall, the unit operates quietly and provides stable hot water output without any issues.
Advantages of RU180iP
  • Easy installation
  • Zero issues with the unit
  • Quiet operation
  • Efficient performance
  • Stable hot water output
Weaknesses
  • Slightly longer delay for hot water on cold startup
  • Missing parts in some units during purchase

The Rinnai RU180iP Condensing Tankless Hot Water Heater is a compact and durable unit that offers endless hot water flow throughout the house. With its super high-efficiency plus condensing technology, this indoor installation model ensures optimal water pressure and conserves energy by heating only when necessary. Featuring advanced SENSEI technology, this tankless water heater has a longer lifespan as water runs continuously through the pipes, preventing accumulation of rusty sediments. It is easy to install, but professional installation is recommended for best results.

Efficient and reliable hot water
  • Endless hot water flow
  • Compact and durable design
  • Easy installation
  • Energy-saving and space-efficient design
  • Optimal water pressure
2

Rinnai V53DeP Tankless Water Heater – Propane, Outdoor

$669.71  in stock
Amazon.com
as of January 17, 2025 11:31 pm
8.9
The Rinnai V53DeP Tankless Hot Water Heater is a compact and durable propane-powered unit that provides endless hot water flow and optimal water pressure. It is easy to install and offers quick heating of water, making it a reliable and efficient option for various applications. However, some users may experience initial confusion with the electrical connections and it does not come with a temperature controller.
Efficient and Convenient
  • Easy installation
  • Reliable performance
  • Quick heating of water
  • Compact size
  • Versatile for different applications
Potential Drawbacks
  • Initial confusion with electrical connections
  • Does not come with a temperature controller

The Rinnai V53DeP Tankless Hot Water Heater is a compact and durable outdoor installation unit that provides endless hot water flow throughout the house. With its high-efficiency technology, this tankless water heater conserves energy by heating water only when necessary. It comes with a professional installation recommendation for optimal performance. Customers have praised its long lifespan, ease of installation, and the ability to handle multiple fixtures simultaneously. Whether you're looking to replace a tank unit or need hot water for a tiny house or outdoor shower, the Rinnai V53DeP is a reliable and efficient choice.

Efficient and Weatherproof
  • Energy-efficient and space-saving design
  • Compact and durable
  • Easy to install
  • Energy efficient and space-saving design
  • Optimal water pressure
3

Rinnai RU199iN Tankless Water Heater

 in stock
Amazon.com
8.9
Reliable and efficient
The Rinnai RU199iN Condensing Tankless Hot Water Heater is a compact and durable unit that provides endless hot water flow and optimal water pressure. It offers excellent performance and efficiency, operates quietly, and delivers a stable hot water output. While there may be a slightly longer delay for hot water on cold startup and some initial missing parts, overall it is a reliable and DIY-friendly option for energy-efficient heating.
Weaknesses
  • Slightly longer delay for hot water on cold startup
  • Missing parts in initial purchase, requiring repair and replacement

The Rinnai RU199iN Condensing Tankless Hot Water Heater is a compact and durable unit that offers endless hot water flow throughout the house. With its super high-efficiency plus condensing technology, it conserves energy by heating only when necessary. The installation is straightforward and manageable, making it a great option for DIY enthusiasts. The unit is praised for its stable hot water output and minimal noise, providing consistent performance and solid dependability. Overall, the Rinnai RU199iN is a top-notch appliance that delivers on functionality and ease of use.

Efficient and Reliable Hot Water
  • Endless hot water flow
  • Compact and durable design
  • Easy installation
  • Energy-efficient heating system
  • Space-saving design
  • Optimal water pressure
4

Rinnai RL94IN Gas Tankless Water Heater

 in stock
Amazon.com
8.7
Great choice!
The Rinnai RL94IN Tankless Hot Water Heater is a reliable and efficient option for indoor installations. With a high water flow rate and the ability to handle multiple showers and laundry simultaneously, it ensures you never run out of hot water. While there may be occasional interruptions in the hot water flow and a maximum temperature limit of 120 degrees Fahrenheit, the overall performance and ease of installation make it a great choice.
Efficient and Reliable
  • Quick delivery
  • Easy installation
  • Reliable performance
  • Able to handle multiple showers and laundry simultaneously
  • Energy efficient
  • No issues reported with rust or damage from salty well water
Drawbacks
  • Occasional midstream interruptions in hot water flow
  • Maximum temperature limited to 120 degrees Fahrenheit

The Rinnai RL94IN Tankless Hot Water Heater is a compact and efficient solution for your home's hot water needs. It's designed to be incredibly space-saving, taking up only as much room as a small suitcase. With its advanced technology, you can enjoy clean and reliable hot water at a consistent temperature. Plus, you'll save energy and precious floor space in your home. Although there may be a slight delay in hot water heating up, it provides plenty of hot water for multiple showers and laundry loads even in the dead of winter. It's easy to install and can be made even smarter with a Rinnai Controlr for WiFi connectivity. Overall, it's a great choice for those looking for a high-efficiency tankless hot water heater.

Hot Water on Demand
  • Tankless hot water heater
  • Circ-Logic technology
  • Natural gas powered
  • Indoor installation
  • High water flow rate of 9.8 GPM
  • Never run out of hot water
5

Rheem Liquid Propane Tankless Water Heater – RTGH-RH10DVLP

$1,152.08
$1,001.57
 in stock
Amazon.com
as of January 17, 2025 11:31 pm
8.7
Excellent choice
The Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater with Built-in Recirculation 10.0 GPM is a great option for those looking for instant hot water without the wait. Its high energy efficiency and compact design make it a space-saving choice, and its built-in safety features provide peace of mind. However, it is important to note that the initial cost is higher and professional installation is required.
Efficient and Reliable
  • Built-in recirculation for instant hot water
  • High energy efficiency and water savings
  • Compact and space-saving design
  • Water and gas leak detection for safety
Possible Weaknesses
  • Higher initial cost
  • Requires professional installation

The Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater with Built-in Recirculation 10.0 GPM – RTGH-RH10DVLP is a high efficiency and space-saving solution for continuous hot water in your home. With its built-in recirculation pump and auto-learning programing, you'll have instant hot water only when you need it. This tankless water heater also features industry leading low flow activation, ensuring that you have hot water even at low flow rates. Plus, with its ultra low NOx burner, this water heater meets safety requirements for low emissions. It's also equipped with a range of safety features, including flame sensor, overheat cut off switch, gas and water leak detectors, and exhaust and water temperature sensors. With venting options of up to 100′ with 3″ PVC or up to 50′ with 2″ PVC pipe, this water heater is versatile and can be used with up to 5 bathrooms depending on the inlet temperature. It has a high efficiency rating of .94UEF (.96EF Canada) and a 199,000BTU efficiency. Please note that professional installation is required to honor the warranty. With a 12-year heat exchanger warranty, 5-year parts warranty, and 1-year labor warranty, you can trust in the quality and reliability of this Rheem water heater. Hot water without the wait, low operating cost, and space-saving design make this product a great choice for your home.

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Efficient and Reliable Water Heating
  • Built-in recirculation for hot water without the wait
  • High energy efficiency and water savings setting for low operating costs
  • Compact and space-saving design, perfect for tank replacement
  • Water and gas leak detection for safety and error prevention
6

Rheem Tankless Gas Water Heater – RTGH-RH10DVLN

 in stock
Amazon.com
8.2
Overall, a solid choice
The Rheem Prestige Condensing Tankless Gas Water Heater is a highly efficient and compact unit that comes with a convenient built-in recirculation system. It offers professional installation, adjustable water temperature, and effective water and gas leak detection. However, it lacks installation instructions and requires an additional purchase for wifi connectivity.
Benefits of Rheem Tankless Gas Water Heater
  • Professional installation
  • Ability to adjust water temperature
  • Built-in recirculation feature
Potential Weaknesses
  • No installation instructions included
  • Additional purchase required for wifi connectivity

The Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation 10.0 GPM – RTGH-RH10DVLN is a high-efficiency condensing tankless water heater designed to provide continuous hot water. With its built-in recirculation pump and auto-learning programming, it offers instant hot water when needed, saving both time and energy. This water heater also features industry-leading low flow activation, ensuring hot water even at low flow rates. With additional safety features such as flame and water leak detectors, it provides peace of mind. The compact design makes it a great choice for replacing traditional tanks, and it can be used with up to 5 bathrooms depending on the inlet temperature. Professional installation is required for warranty coverage.

Efficient and Reliable Performance
  • Built-in recirculation system
  • High energy efficiency
  • Compact design
  • Water and gas leak detection
7

Takagi Tankless Water Heater

$1,385.00  in stock
Amazon.com
as of January 17, 2025 11:31 pm
7.8
Excellent Choice
The Takagi T-H3-DV-N Condensing High-Efficiency Natural Gas Indoor Tankless Water Heater is a highly recommended product with its endless hot water supply and on-demand usage. It has a high flow rate of 10 gallons per minute and a compact design, making it a space-saving option. The condensing unit improves efficiency and the option to use PVC tubing for ventilation instead of stainless steel is a plus. However, there may be concerns about the packaging and the need for a nearby drain for the condensing feature. Overall, it is a great choice for those looking for a reliable and efficient water heater.
Benefits of Takagi
  • High flow rate of 10 gallons per minute
  • Condensing unit for improved efficiency
  • Lower vent temperature compared to other units
  • Can use PVC tubing for ventilation instead of stainless steel
  • Can be installed with additional filters for improved water quality
  • Highly recommended by users
  • Nice and cool appearance
Drawbacks
  • The unit may arrive in a damaged box due to poor packaging
  • The condensing feature requires a drain nearby, which may be a problem if one is not readily available

The Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater is a versatile and reliable option for both residential and commercial applications. With its commercial grade copper alloy heat exchanger tubing, it can handle heavier usage such as space heating or domestic recirculation systems. It is also compliant with Ultra-Low NOx regulations, ensuring it meets high safety and environmental standards. With a gas input of 199,000 BTU and a flow rate of 10 gallons per minute, it can provide endless hot water for multiple bathrooms. With its compact and space-saving design, computerized safety features, and energy conservation capabilities, this water heater is a great investment for any property.

Efficient and Reliable Hot Water
  • Endless hot water
  • On-demand usage
  • Compact, space-saving design
  • Energy conservation
  • Computerized safety features
  • No pilot light to worry about
$1,385.00
in stock
as of January 17, 2025 11:31 pm
Amazon.com

My Ultimate Guide to the Top Tankless Gas Water Heaters in 2023 (Natural Gas and Propane) ????

Making the Right Choice: Your Buyer Guide to Finding the Perfect 10 GPM Tankless Water Heater

  • Flow Rate: One of the most important factors to consider is the flow rate. A 10 GPM (gallons per minute) tankless water heater is designed to provide hot water at a rate of 10 gallons per minute, which is ideal for larger households or commercial use. Make sure the water heater you choose delivers the desired flow rate to meet your household's demands
  • Energy Efficiency: Another crucial aspect is the energy efficiency of the water heater. Look for models that are Energy Star certified, as they are designed to consume less energy while still providing efficient hot water. This not only helps to reduce your energy bills but also benefits the environment by reducing carbon emissions
  • Size and Installation: Consider the size and installation requirements of the tankless water heater. These units are typically compact and space-saving compared to traditional tank water heaters. However, it's important to ensure that you have enough space to accommodate the unit and that it can be properly installed in your desired location. Additionally, check if the water heater requires any specific venting or electrical requirements for hassle-free installation
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Affordable and Efficient: Find the Perfect Price for Your 10 GPM Tankless Water Heater

  • $500 to $800: These water heaters are typically the mid-range options in terms of price. They offer good performance and efficiency, with features like digital controls and multiple heating elements
  • $800 to $1200: In this range, you can find higher-end tankless water heaters with advanced technology and additional features. These models may have built-in Wi-Fi connectivity, self-cleaning mechanisms, and enhanced energy-saving options
  • $1200 and above: At this price point, you can expect top-of-the-line tankless water heaters that provide excellent performance and durability. They often come with premium features like smart home integration, precise temperature control, and corrosion-resistant materials
  • It's important to note that these price ranges can vary depending on the brand, model, and any additional features included. It's always a good idea to compare different options and consider your specific requirements before making a purchase
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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