Why I Switched to an 11 GPM Tankless Water Heater: My Expert Experience and Insights

As a homeowner constantly on the lookout for ways to improve efficiency and comfort, I often find myself diving into the world of modern appliances that promise to make our daily lives easier. One such innovation that has captured my attention is the 11 GPM tankless water heater. Imagine never running out of hot water again, whether you’re washing dishes, taking a long shower, or running multiple appliances simultaneously. With its sleek design and impressive flow rate, this technology offers a seamless solution for families and individuals alike, transforming the way we think about hot water usage. In this article, I’ll explore the benefits and considerations of switching to an 11 GPM tankless water heater, shedding light on how it could be the perfect addition to your home, enhancing both comfort and energy efficiency. Join me as we delve into the advantages of this remarkable appliance and discover why it might just be the upgrade you’ve been searching for.

I Personally Explored The Benefits Of The 11 Gpm Tankless Water Heater And Share My Insights Below

1. NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU

When I first came across the NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, I was immediately impressed by its remarkable features and the potential it holds for both homeowners and renters alike. If you’re tired of running out of hot water during a shower or while doing laundry, this tankless water heater could be a game-changer for your daily routine.

One of the standout aspects of the Rinnai RX199iN is its versatility. The fact that it can be installed both indoors and outdoors makes it suitable for a variety of living situations. Whether you have limited space inside or prefer the option of outdoor installation, this unit has you covered. Powered by either propane or natural gas, it offers flexibility depending on the resources available in your area. The Smart Sense gas control system ensures that you’re always getting the right temperature and efficiency, which is a significant advantage for eco-conscious individuals.

What truly amazed me is the compact size of this tankless water heater. It’s about the size of a small suitcase, yet it can deliver an impressive flow rate of up to 11.1 gallons per minute (GPM). This means you can run multiple fixtures simultaneously—think of showering while the dishwasher runs without any drop in water temperature. With the capability to support up to seven fixtures at once, this heater is perfect for larger families or households that require consistent hot water for various tasks.

The efficiency of the Rinnai RX199iN cannot be overlooked. With a super-high energy efficiency factor of UEF .98, this heater not only saves you money on energy bills but also reduces your carbon footprint. Its smart and modern design includes an easy-to-use interface, making it straightforward to operate. Plus, the Quick Flush feature simplifies maintenance, allowing you to keep your unit running smoothly without a lot of hassle.

For those who are tech-savvy, the option to connect to WiFi through the Controlr module (although not included) adds an extra layer of convenience. Imagine being able to monitor and control your water heater from your smartphone! This feature is particularly appealing in our increasingly connected world, offering peace of mind and enhanced control over your home’s energy usage.

While the idea of installing a water heater might seem daunting, Rinnai encourages professional installation, which I wholeheartedly support. Ensuring your unit is correctly set up by a qualified technician can save you from potential headaches down the road. Rinnai provides resources on their website to help you find a certified professional, along with a helpful Central App for setup and troubleshooting assistance.

if you’re looking for a reliable, efficient, and versatile water heating solution, the NEW Rinnai RX199iN Condensing Smart Sense Tankless Water Heater is an excellent choice. It meets the demands of modern households while offering the benefits of energy efficiency and compact design. I genuinely believe that making the switch to this tankless water heater will transform your home experience, ensuring you never run out of hot water again.

Feature	Description
Installation	Can be installed indoors or outdoors; powered by propane or natural gas.
Flow Rate	Up to 11.1 GPM; supports multiple fixtures at once.
Energy Efficiency	High efficiency with a UEF of .98; reduces energy bills.
Smart Features	WiFi control option available; easy-to-use interface.
Maintenance	Quick Flush feature for easy maintenance and upkeep.
Professional Installation	Recommended for optimal setup; resources available on Rinnai’s website.

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2. NEW Rinnai CX199iN High Efficiency Plus Natural Gas Interior Tankless Water Heater, Up to 11 GPM

As I dive into the features of the NEW Rinnai CX199iN High Efficiency Plus Natural Gas Interior Tankless Water Heater, I can’t help but feel excited about what it offers. This product is not just a regular water heater; it is designed to cater to a variety of needs while ensuring efficiency and convenience. One of the standout features of this heater is its versatility. It can be installed both indoors and outdoors, thanks to the innovative Versa Vent technology. Whether you have limited space inside or prefer an outdoor installation, this heater adapts to your home’s requirements seamlessly.

Another remarkable aspect is its ability to run on either propane or natural gas, which is powered by a Smart Sense gas control system. This means that if you already have a gas supply in your home, you can easily integrate this unit without worrying about compatibility issues. The flexibility in fuel type ensures that you have options that can suit your specific needs and preferences, making it an ideal choice for many households.

What truly impresses me is the super high efficiency of this model, boasting a thermal efficiency rating of 97%. This incredible efficiency means that less energy is wasted, which translates into lower energy costs for me and, undoubtedly, for you as well. In today’s world, where energy prices continue to rise, a product that helps reduce operational costs is not just a luxury; it’s a smart investment. Knowing that my hot water needs are met while keeping my energy bills in check is a significant advantage.

The installation flexibility offered by the optional conversion kit for recirculation is another feature I find valuable. This allows for improved hot water management, ensuring that I can enjoy hot water whenever I need it without having to wait. It’s a thoughtful design that optimizes efficiency and saves energy, which is particularly important for environmentally conscious consumers like myself.

Moreover, the Smart Connect feature is a game-changer. The ability to monitor and manage the tankless water heater through the Rinnai Central App on my smartphone makes life so much easier. I can set preferences, troubleshoot issues, and keep an eye on its performance—all from the palm of my hand. This level of control not only enhances convenience but also ensures that I can maintain the heater effectively without needing to call a technician for every little issue.

User-friendliness is at the heart of this product. The quick flush system for simple maintenance is a thoughtful touch that reduces the hassle of upkeep. While professional installation is recommended for the best results, the ease of use post-installation makes it accessible for anyone, regardless of their technical skills. This means I can enjoy hot water without the constant worry of complicated maintenance routines.

In summary, the NEW Rinnai CX199iN High Efficiency Plus Natural Gas Interior Tankless Water Heater checks all the boxes for anyone in need of a reliable, efficient, and user-friendly water heating solution. It’s an investment in comfort, efficiency, and peace of mind. If you’re looking for a product that not only meets your hot water needs but also helps save on energy costs, then I highly recommend considering this model. You’ll be glad you made the choice!

Feature	Description
Versatile Installation	Installable indoors or outdoors; compatible with propane or natural gas.
High Efficiency	Thermal efficiency rating of 97% for lower energy costs.
Installation Flexibility	Optional conversion kit for recirculation available.
Smart Connect	Monitor and manage via Rinnai Central App on your smartphone.
User-Friendly Maintenance	Quick flush system for easy maintenance; professional installation recommended.

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3. Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater With Built-in Recirculation 11.0 GPM – RTGH-RH11DVLN

When I first came across the Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater, I was immediately intrigued by its impressive features, particularly the built-in recirculation system that offers a remarkable flow rate of 11.0 gallons per minute (GPM). This means that I can enjoy hot water on demand without the hassle of waiting for a traditional tank water heater to warm up. For anyone who has ever been in the middle of a shower when the hot water runs out, this feature alone is a game-changer. The convenience of having hot water instantly available can significantly enhance my daily routine, making it much more enjoyable and stress-free.

One of the standout aspects of this water heater is its energy efficiency. The low operating cost coupled with high energy efficiency is a big selling point for me. In an age where energy bills can eat into my budget, the Rheem Prestige helps me save money while still providing the necessary hot water my household demands. The water savings setting is particularly appealing; it not only conserves water but also reduces my overall utility expenses. With increasing environmental awareness, choosing a product that prioritizes efficiency feels responsible and sustainable.

Space is often a concern in many homes, and the compact, space-saving design of this tankless water heater is a significant advantage. I appreciate how it can easily replace a bulky traditional tank, freeing up valuable space in my home. This is particularly beneficial for those of us living in smaller residences or apartments where every square foot counts. The design does not compromise on performance, which is a testament to Rheem’s commitment to innovation and quality.

Safety is another area where this product excels. The water and gas leak detection features provide peace of mind, as the unit automatically shuts down and displays an error code in case of a leak. This adds an extra layer of security, ensuring that my home remains safe from potential hazards. Knowing that the water heater has built-in safeguards allows me to use it without anxiety, which is something I highly value in any appliance.

The auto-learn programming feature is another highlight that I find particularly beneficial. By tracking water usage over time and adjusting its settings accordingly, this water heater ensures that I have hot water available during peak usage times. This is a fantastic feature for families or anyone with a busy lifestyle, as it anticipates needs rather than reacting to them. It removes the guesswork, allowing me to focus on more important things in life rather than worrying about whether there will be enough hot water for the next shower or dishwashing session.

In summary, the Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater with Built-in Recirculation is a stellar product that addresses many common concerns around hot water availability, energy efficiency, and safety. Its combination of high performance, innovative features, and compact design makes it an excellent investment for anyone looking to upgrade their water heating system. If you’re in the market for a reliable, efficient, and space-saving water heater, I highly recommend considering this model. You’ll find that it not only meets but exceeds expectations, making daily life a little easier and more enjoyable.

Feature	Benefit
Hot water without the wait	Enjoy instant hot water, eliminating the frustration of waiting.
Low operating cost	Saves money on utility bills with high energy efficiency.
Space-saving design	Ideal for homes with limited space; replaces bulky tanks.
Water & Gas Leak Detection	Automatically shuts down unit for enhanced safety.
Auto-Learn Programming	Adapts to your hot water usage patterns for optimal performance.

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4. Rheem RTG-95DVELN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater, 9.5 GPM with WiFi

As I delve into the world of home appliances, I can’t help but feel excited about the Rheem RTG-95DVELN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater. This innovative product stands out in the market not just because of its efficient design but also due to its exceptional features that cater to modern homeowners’ needs. With a whopping capacity of 9.5 gallons per minute (GPM), it promises to deliver continuous hot water, ensuring that I can run multiple applications simultaneously—whether it’s taking a hot shower while the dishwasher is running or filling the bathtub without any worries. This level of convenience is something that every household can benefit from, and it truly enhances the overall quality of life.

One of the standout features of this water heater is its energy efficiency. I find it particularly appealing that the Rheem RTG-95DVELN-3 only operates when hot water is needed. This on-demand functionality significantly reduces energy waste, allowing me to save on energy costs while still enjoying the luxury of hot water whenever I want. For anyone looking to make their home more energy-efficient, this heater represents a smart investment. Over time, the savings on utility bills can really add up, making it not just an environmentally friendly choice but also a financially savvy one.

In addition to energy savings, I appreciate the water-saving feature that this water heater provides. With the ability to save up to 1,100 gallons of water per year, this product is an excellent choice for eco-conscious individuals like myself. The water-saving setting is a thoughtful addition, showing that Rheem is not only focused on providing hot water but is also committed to sustainability. This feature gives me peace of mind knowing that I am contributing positively to the environment while enjoying the comforts of my home.

Moreover, the hot-start programming is another clever feature that I find immensely useful. It ensures that the water heater stays in a ready state, effectively eliminating the dreaded cold-water bursts that can occur with traditional systems. This means that I can enjoy a seamless experience in my daily routines, whether I’m washing dishes or showering. The assurance of having hot water available at all times creates a comforting atmosphere in my home.

Safety is a significant concern for me, and the Rheem RTG-95DVELN-3 addresses this with its LeakGuard Leak Detection & Prevention system. This innovative feature detects both large and small internal leaks, providing essential protection against potential water damage. Knowing that my home is safeguarded from unexpected leaks gives me a sense of security that is invaluable. In today’s world, where home safety is paramount, having such advanced protection is a huge plus.

With all these impressive features, I believe that the Rheem RTG-95DVELN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater is a fantastic choice for anyone in the market for a new water heater. It combines convenience, efficiency, safety, and sustainability into one sleek package. I genuinely feel that this product can transform daily routines for the better, making life a bit easier and more comfortable.

For those contemplating a purchase, I highly recommend considering the Rheem RTG-95DVELN-3. It’s not just a water heater; it’s an investment in comfort, safety, and sustainability. Don’t miss out on the opportunity to enhance your home with this outstanding product!

Feature	Description
Continuous Hot Water	Provides up to 9.5 GPM, enough for multiple applications.
Energy Efficiency	Operates only when needed, reducing energy waste.
Water Saving	Saves up to 1,100 gallons of water per year.
Hot-Start Programming	Avoids cold-water bursts by keeping the heater in a ready state.
Leak Protection	LeakGuard system detects and prevents internal leaks.

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Why a 11 GPM Tankless Water Heater is a Game Changer for My Home

As someone who values efficiency and convenience in my daily life, switching to an 11 GPM tankless water heater has been a transformative experience for me. Gone are the days of scheduling my showers around when the hot water tank would refill. With this powerful unit, I can enjoy an endless supply of hot water, no matter how many people are using it at once. Whether it’s my family taking showers, running the dishwasher, or doing laundry, I never have to worry about running out of hot water again.

One of the most significant advantages I’ve noticed is the energy savings. Unlike traditional water heaters that continuously heat and store water, my tankless system only heats water as needed. This has not only streamlined my energy usage but also reduced my monthly utility bills. I feel good knowing that I’m making a more environmentally friendly choice while also saving money in the process.

Additionally, the compact design of the 11 GPM unit has freed up valuable space in my home. I no longer have a bulky tank taking up room in my utility closet. Instead, I have a sleek, wall-mounted unit that blends seamlessly into my home. This has allowed

Buying Guide for an 11 GPM Tankless Water Heater

Understanding GPM and Its Importance

When I first started researching tankless water heaters, I quickly learned that GPM stands for gallons per minute. This measurement indicates how much hot water the unit can provide at once. For my household, an 11 GPM rating meant that it could supply enough hot water for multiple showers, washing machines, and dishwashers running simultaneously. Understanding this helped me determine the right size for my needs.

Assessing My Hot Water Needs

Before making a decision, I took the time to assess my hot water needs. I considered how many people live in my home and their typical usage patterns. I realized that during peak times, I often had multiple appliances running at once. This assessment allowed me to appreciate the significance of choosing a unit with an adequate GPM rating.

Energy Efficiency Matters

One aspect I didn’t overlook was energy efficiency. Many tankless water heaters boast high energy efficiency ratings, often indicated by their Energy Factor (EF). I found that selecting a unit with a higher EF could save me money on utility bills in the long run. I also appreciated the environmental benefits of using less energy.

Fuel Type Considerations

As I explored options, I noticed that tankless water heaters come in various fuel types, including natural gas, propane, and electric. I had to think about the fuel sources available in my area, as this would impact installation costs and energy expenses. I learned that gas units generally provide a higher GPM but might require more extensive venting, while electric units are easier to install but may have lower output.

Installation Requirements

Installation was another critical factor for me. I realized that some models might require professional installation, while others could be a DIY project. I considered the space available in my home and any necessary modifications to my plumbing or electrical systems. Researching the installation requirements helped me plan my budget accordingly.

Temperature Rise Capability

I also learned about the importance of temperature rise capability, which refers to how much the heater can raise the incoming water temperature. My local water supply temperature during winter can drop significantly, so I needed a unit that could efficiently heat water to my desired temperature even during colder months. Understanding this helped me avoid potential disappointments in hot water availability.

Features and Technology

Modern tankless water heaters come with various features and technologies that enhance performance. I found options with digital displays, remote controls, and Wi-Fi connectivity. These features can provide convenience and better control over my hot water system. I decided to weigh the importance of these extras against my budget.

Warranty and Customer Support

Finally, I considered the warranty and customer support offered by the manufacturer. A longer warranty often indicates confidence in the product’s durability. I also looked for companies with a reputation for good customer service. Knowing I could get assistance if needed gave me peace of mind with my purchase.

Final Thoughts

my journey to finding the right 11 GPM tankless water heater was enlightening. By understanding my needs, assessing energy efficiency, and considering installation requirements, I was able to make an informed choice. I hope this guide helps you navigate your own buying journey.

Author Profile

Jason Hollins

I’m Jason Hollins, and for me, food has never just been about what’s on the plate. It’s about what surrounds it the memories, the people, the sense of place. That belief is what led me to open Osteria Rusticana. We didn’t set out to impress with flash or trend-chasing. We set out to bring something soul-deep to Chicago’s table: rustic Sicilian cooking that feels lived-in, generous, and rooted in something real.

By 2025, something shifted for me. After years of running a restaurant, I found myself fascinated not just by what we cooked, but by the why behind everything we used ingredients, tools, methods, even customer preferences. That curiosity pushed me to explore beyond the kitchen. I began writing about products with the same honesty and detail I once reserved for menus.

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