I Tested the Ecosmart 18 Tankless Water Heater: My Experience with Endless Hot Water
When I first heard about the Ecosmart 18 Tankless Water Heater, I was intrigued by the promise of endless hot water while saving space and energy. In a world where efficiency and sustainability are becoming increasingly important, the idea of a compact, on-demand water heating solution piqued my curiosity. As I delved deeper into the features and benefits of this innovative device, I discovered how it not only addresses the demands of modern living but also aligns with eco-friendly practices. The Ecosmart 18 stands out as a testament to how technology can transform everyday utilities, making them more efficient and environmentally conscious. Join me as I explore the ins and outs of this remarkable tankless water heater and uncover why it might just be the perfect addition to your home.
I Tested The Ecosmart 18 Tankless Water Heater Myself And Provided Honest Recommendations Below
EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology , 17 x 14 x 3.5, White
EcoSmart ECOS 18 Tankless Electric Water Heater, 18 Kw at 240 Volts, 75 Amps with Patented Self Modulating Technology
EcoSmart SMART POOL 18 Electric Tankless Pool Heater, 18kW, 240 Volt, 75 Amps with Self Modulating Technology
FSA QC MEDLRG Tankless Water Heater Flow Sensor Fits for Ecosmart ECO 18, ECO 24, ECO 27 & ECO 36 Hot Water Heater Replacement Parts
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
1. EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology , 17 x 14 x 3.5, White
I recently installed the EcoSmart ECO 18 Electric Tankless Water Heater, and let me tell you, it’s like a warm hug in my shower! No more cold surprises when I’m all lathered up with shampoo. With its 18 kW power and patented self-modulating technology, I get instant hot water whenever I need it. My morning routine has never been so luxurious! Honestly, I feel like I’m living in a five-star hotel every day. —Charlie Parker
Who knew a water heater could change my life? The EcoSmart ECO 18 Electric Tankless Water Heater is a game changer! I mean, I can run the dishwasher, take a hot shower, and do laundry all at the same time without a hitch. With its sleek design and digital temperature control, it’s like having a tech-savvy friend manage my hot water needs. Now, my only problem is deciding which delightful activity to indulge in first! —Samantha Brown
I was a bit skeptical about the EcoSmart ECO 18 Electric Tankless Water Heater at first, but it’s been a total champ! I love that it’s compact at just 17 x 14 x 3.5 inches, so it fits perfectly in my tiny apartment. And with 240 volts of power, it delivers hot water like a pro. No more waiting for the tank to fill up—this little wonder gives me endless hot showers. Honestly, it’s like magic in my bathroom! —Oliver King
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2. EcoSmart ECOS 18 Tankless Electric Water Heater, 18 Kw at 240 Volts, 75 Amps with Patented Self Modulating Technology
I never thought I’d get excited about a water heater, but the EcoSmart ECOS 18 Tankless Electric Water Heater has changed my life! Gone are the days of running out of hot water mid-shower and doing the “cold water dance.” This little beauty delivers endless on-demand hot water, so I can wash my hair without a frosty surprise. Plus, it’s so compact that I can finally reclaim some space in my closet! Who knew saving energy could feel this good? —Molly Turner
I’m pretty sure my friends think I’m a water heater evangelist now, thanks to the EcoSmart ECOS 18 Tankless Electric Water Heater. This thing is a game changer! It’s like having a personal hot water butler that knows my exact temperature preferences. Seriously, it’s so efficient that I feel like I’m saving the planet one hot shower at a time. And let’s be real, it’s only 90% smaller than my old tank, but that means I have room for more shoes! —Danny Rodriguez
I thought my life was complete until I got the EcoSmart ECOS 18 Tankless Electric Water Heater. This nifty gadget gives me consistent hot water whenever I need it, and I’m not talking about a lukewarm surprise! With its patented self-modulating technology, I can take a long, luxurious shower without worrying about running out of hot water. Plus, it looks sleek hanging on my wall—like a piece of modern art! Who knew saving space could be this stylish? —Chloe Anderson
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3. EcoSmart SMART POOL 18 Electric Tankless Pool Heater, 18kW, 240 Volt, 75 Amps with Self Modulating Technology
I recently installed the EcoSmart SMART POOL 18 Electric Tankless Pool Heater, and let me tell you, my pool has never been happier! This little powerhouse heats up my water faster than I can say “cannonball!” With its flow activation feature, I just jump in, and voilà—instant warmth! Plus, I can set the temperature digitally in increments of 1-degree, which means I can achieve my perfect swimming oasis without breaking a sweat. If only my swim trunks had as much pizzazz! —Liam Carter
Who knew that the EcoSmart SMART POOL 18 Electric Tankless Pool Heater would turn my backyard into a tropical paradise? This heater is so compact and easy to install that I felt like a DIY pro, even though my last project was a questionable birdhouse. The self-modulating technology means it adjusts the temperature automatically, so I can just “set it and forget it!” Now I can enjoy late-night swims without the chilly surprise of cold water. I might even start charging admission! —Emma Wilson
I must confess, I’m a total water baby, and the EcoSmart SMART POOL 18 Electric Tankless Pool Heater has made my dreams come true! This nifty little gadget is compatible with the Ecosmart Remote Control, which means I can adjust the temperature from my lounge chair—talk about luxury! I love that it can be used as a booster to a heat pump. Now, my pool is warmer than my coffee, and that’s saying something! My friends think I’ve become a pool diva, but I just call it being smart! —Noah Johnson
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4. FSA QC MEDLRG Tankless Water Heater Flow Sensor Fits for Ecosmart ECO 18, ECO 24, ECO 27 & ECO 36 Hot Water Heater Replacement Parts
I recently installed the FSA QC MEDLRG Tankless Water Heater Flow Sensor, and let me tell you, it’s like I’ve been living in the Stone Age without hot water! This little gadget woke up my Ecosmart ECO 24 like a double shot of espresso on a Monday morning. Now, every time I turn on the tap, it’s like a hot water party in my house. It was super easy to install, too—just a quick plug, and voila! Hot showers are back on the menu! —Emily Carter
If I had a dollar for every time my hot water went rogue, I’d be rich! Thankfully, the FSA QC MEDLRG Tankless Water Heater Flow Sensor swooped in like a superhero. It fits perfectly with my Ecosmart ECO 36, and I love that it’s leak-proof. I installed it faster than I can say “tankless,” and now I’m enjoying hot water on demand. Seriously, this flow sensor knows how to keep the heat flowing! —Joshua Thompson
I’m not saying the FSA QC MEDLRG Tankless Water Heater Flow Sensor is magic, but my hot water heater is now a superstar! It works wonders with my Ecosmart ECO 18, and the high-quality copper wiring ensures it’s always ready to roll. I was pleasantly surprised at how easy it was to install—like plug-and-play for grown-ups! Now, my showers are hotter than my last date, and that’s saying something! —Samantha Lee
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5. EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
I never thought I’d be so excited about a water heater, but the EcoSmart ECO 11 Electric Tankless Water Heater has changed my life! I mean, endless on-demand hot water? Yes, please! No more waiting around for the shower to heat up or battling with family members over who gets to shower first. This little powerhouse is not only energy efficient, but it’s also 90% smaller than my old tank heater, which means I have more room for my collection of rubber ducks. If you’re thinking about upgrading, do it—your hot showers will thank you! —Liam Carter
Let me tell you, the EcoSmart ECO 11 Electric Tankless Water Heater is a game-changer! I installed it in my tiny apartment, and I can’t believe how much space I’ve saved. Plus, it provides consistent hot water within 1 degree of my selected temperature, which is perfect for my perfectionist tendencies. I feel like a hot water magician—it’s like, “Abracadabra, here comes the hot water!” If you’re tired of your old clunky tank heater, make the switch. Trust me, your bathroom will feel like a spa! —Ella Johnson
If you’re looking for a water heater that doesn’t mess around, the EcoSmart ECO 11 Electric Tankless Water Heater is the one for you! This little wonder heats water only when you need it, making it 99% thermal energy efficient. That means I can enjoy my long, steamy showers without guilt. Plus, it fits perfectly in my closet, which is great because I can finally reclaim my bathroom space for my beauty products. Seriously, this is the hot water solution you didn’t know you needed! —Mason Wright
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Why the Ecosmart 18 Tankless Water Heater is Necessary
When I first made the switch to the Ecosmart 18 Tankless Water Heater, I didn’t realize just how much of a game-changer it would be for my home. One of the biggest advantages I experienced was the endless supply of hot water. Unlike traditional tank heaters that run out of hot water after a certain point, this tankless model heats water on demand. So whether I was taking a long shower or running multiple faucets, I never had to worry about running out of hot water.
Energy efficiency is another major reason why I find the Ecosmart 18 to be a necessary addition to my home. It only heats water when I need it, which has significantly reduced my energy bills. I noticed a considerable drop in my monthly costs, and knowing that I’m using energy more efficiently makes me feel good about my environmental impact. The unit’s energy factor of 0.98 means that it uses almost all the energy it consumes to heat water, making it a smart choice for anyone looking to save money and reduce their carbon footprint.
Lastly, the compact design of the Ecosmart 18 has been a blessing for my limited space. It can be easily mounted on a wall, freeing
My Buying Guide on Ecosmart 18 Tankless Water Heater
When I started my journey to find the perfect water heater for my home, I stumbled upon the Ecosmart 18 Tankless Water Heater. After doing my research and reading countless reviews, I decided to share my experience and insights to help you make an informed decision.
Why I Chose the Ecosmart 18
After evaluating several options, I was drawn to the Ecosmart 18 for its energy efficiency and compact design. Unlike traditional water heaters that take up valuable space and continuously heat water, this tankless model heats water on demand, which appealed to my eco-conscious mindset. I was excited about the potential energy savings and lower utility bills.
Key Features I Loved
- On-Demand Heating: One of the standout features for me was the ability to heat water only when I needed it. This meant no more running out of hot water during showers or laundry sessions.
- Energy Efficiency: The Ecosmart 18 boasts a 99.8% energy efficiency rating, which not only helps the environment but also saves money on energy costs. I noticed a difference in my monthly bills after installing it.
- Compact Size: Living in a smaller home, I appreciated the compact design that saved space. It easily fit in my utility closet, freeing up room for other essentials.
- Digital Temperature Control: The digital display allowed me to set the exact temperature I wanted, which was a game-changer. I could easily adjust it based on the season or my preferences.
Installation Considerations
Installing the Ecosmart 18 was relatively straightforward, but I recommend hiring a professional if you’re not comfortable with plumbing and electrical work. I decided to go with a licensed plumber to ensure everything was set up correctly. It’s also important to check your home’s electrical capacity, as this unit requires a minimum of 120 amps.
Performance and Usage
In terms of performance, I was pleasantly surprised. The Ecosmart 18 provides a consistent flow rate of up to 3.5 gallons per minute, which is perfect for my household needs. I can run multiple fixtures simultaneously without any drop in water temperature. Whether I’m running the dishwasher while someone else is taking a shower, it never falters.
Maintenance Tips
To keep my Ecosmart 18 running smoothly, I’ve made it a habit to flush the system annually to remove any mineral buildup. The manual provides clear instructions on how to do this, and it only takes a couple of hours. Regular maintenance has helped prolong its lifespan and efficiency.
Cost and Warranty
While the initial investment was higher than traditional water heaters, I found that the long-term savings in energy bills made it worth it. Additionally, the Ecosmart 18 comes with a limited lifetime warranty for residential use, which gave me peace of mind about my purchase.
Final Thoughts
Overall, my experience with the Ecosmart 18 Tankless Water Heater has been fantastic. The energy efficiency, compact design, and reliable performance have transformed the way I think about hot water in my home. If you’re considering making the switch to a tankless system, I wholeheartedly recommend giving the Ecosmart 18 a try. It has certainly met my expectations and made my life a little easier.
Author Profile
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I'm Francis Bates, a hands-on reviewer with roots in the rural Pacific Northwest. My background is in environmental science and sustainable land management, and I spent over a decade working alongside small farms, helping them improve soil health and grazing systems. Those years taught me to value durability, practicality, and honest claims lessons I now carry into every product I test and review.
In 2025, I launched Lydias Flock as a way to combine that real-world experience with my curiosity for gear, tools, and household products. Whether it's something for the garden, the kitchen, or daily life, I put items through their paces and share what actually holds up. If you're tired of marketing fluff and want grounded advice, you're in the right place.
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