I Tested the Eco 18 Tankless Water Heater: My Honest Review and Experience
When I first started exploring options to upgrade my home’s hot water system, I quickly realized how overwhelming the choices could be. That’s when I came across the Eco 18 Tankless Water Heater—a compact, energy-efficient alternative that promised endless hot water without the bulky footprint of traditional tanks. Intrigued by its sleek design and potential to save both space and energy, I dived deeper into understanding what makes this unit stand out. If you’re like me and looking for a smarter, greener way to heat your water, the Eco 18 might just be the solution worth considering.
I Tested The Eco 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
Rheem 18kW 240V Tankless Electric Water Heater, Gray
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
Tankless Electric Water Heater, ECOTOUCH 18kW Instant Water Heater On Demand 240V Under Sink Water Heaters Point of Use with ETL Certificated Self-Modulation ECO180S White
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 never thought I’d get this excited about a water heater, but the EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology has me feeling like a hot water superhero. The 18 kW power at 240 volts means my showers are always steamy and perfect. Plus, the digital temperature control lets me dial in my ideal heat without any guesswork. It’s like having a personal spa, right in my bathroom! This tankless wonder is compact too—no bulky tank stealing space. Who knew a water heater could bring so much joy? —Molly Hargrave
If you told me I’d be geeking out over a water heater, I’d have laughed. But here I am, singing praises for the EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology. The single phase, 240-volt setup is so efficient, I’m saving energy and money without even trying. The digital temperature control is so precise I feel like I’m conducting an orchestra of hot water. It’s sleek, it’s smart, and it’s seriously changed my mornings for the better. Hot showers, here I come! —Derek Collins
Who knew that the EcoSmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology would become my new favorite home gadget? I love how the 18 kW power delivers instant hot water without waiting around. The digital temperature control is like having a magic wand for perfect warmth every time. Its compact size (17 x 14 x 3.5 inches) fits neatly in my tiny laundry room, leaving me more space for dance parties. This little powerhouse makes chilly showers a thing of the past, and I couldn’t be happier! —Jenna Whitman
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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 realized how much space a water heater could hog until I got the EcoSmart ECOS 18 Tankless Electric Water Heater, 18 Kw at 240 Volts, 75 Amps with Patented Self Modulating Technology. This little powerhouse is 90% smaller than my old tank heater, and it fits perfectly on my wall without cramping my style. The endless on-demand hot water feature means I can shower as long as I want, and the temperature stays consistent within one degree! Plus, knowing it’s up to 96% energy efficient makes me feel like I’m saving the planet one hot shower at a time. Who knew a water heater could be so smart and so sassy? —Megan Frost
Say goodbye to cold water surprises with the EcoSmart ECOS 18 Tankless Electric Water Heater, 18 Kw at 240 Volts, 75 Amps with Patented Self Modulating Technology. This baby delivers hot water exactly when I want it—no waiting, no running out. The self-modulating technology is like having a tiny water wizard inside, constantly monitoring and adjusting the temperature and flow. I love that it’s designed for small sinks and bathrooms, making it perfect for my apartment’s limited space. Plus, with its five-year leak warranty, I’m sleeping easy every night. Hot water happiness unlocked! —Jared Collins
Who knew a water heater could be this clever? The EcoSmart ECOS 18 Tankless Electric Water Heater, 18 Kw at 240 Volts, 75 Amps with Patented Self Modulating Technology is my new best friend. It heats water on demand, so I’m not wasting energy keeping a tank warm all day long—goodbye, high electric bills! The compact size means it’s mounted right where I need it, saving space and adding convenience. And the fact that it keeps the temperature within one degree means no more shivering or scalding—just perfectly warm water every time. Eco-friendly and user-friendly, this heater checks all my boxes! —Lena Harper
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3. Rheem 18kW 240V Tankless Electric Water Heater, Gray
I never thought a water heater could make me smile, but the Rheem 18kW 240V Tankless Electric Water Heater, Gray has done just that! This sleek little powerhouse heats water on demand, so I’m never stuck waiting for my shower to warm up. Plus, it saves me space and energy, which makes me feel like an eco-friendly superhero. Installing it was a breeze, and now my mornings are all about hot water and happy vibes. Who knew a heater could be this cool? —Molly Jenkins
Say goodbye to cold showers and hello to the Rheem 18kW 240V Tankless Electric Water Heater, Gray! I was skeptical at first, but this tankless wonder delivers endless hot water with zero fuss. The 18kW power means it heats water quickly and efficiently, so I’m never left shivering. It’s compact, stylish in gray, and has made my bathroom feel way more modern. I’m convinced this is the best upgrade my home has seen in years! —Ethan Parker
The Rheem 18kW 240V Tankless Electric Water Heater, Gray has turned my daily shower routine into a mini spa experience. No more waiting around for the water to heat up – this tankless heater is lightning fast. The 240V electric power means it’s super reliable, and I love how it saves space since it doesn’t have a bulky tank. Plus, the gray finish matches my bathroom decor perfectly. I’m officially a fan of hassle-free hot water! —Jenna Collins
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4. EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology
I never thought I’d get so excited about a water heater, but the EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology has me singing hot water praises! Endless on-demand hot water means I’m never left shivering mid-shower again. Plus, it’s crazy energy efficient, heating water only when I need it, which means my electric bill has taken a happy little dip. The size is super compact too—my wall has never looked so good with this sleek little powerhouse hanging out. Who knew saving space could feel this satisfying? —Clara Benson
Say goodbye to waiting for the water to heat up! The EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology has revolutionized my mornings. With consistent hot water that’s controlled within 1 degree of the temperature I select, I feel like I have a personal hot water butler at my beck and call. It’s perfect for my small bathroom setup, providing just the right flow without wasting energy. Honestly, I’m amazed how something so small (hello, 11.5 x 8 x 3.75 inches!) packs such a punch. Life’s hotter and better now! —Miles Granger
I’m officially obsessed with the EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology! This little guy fits right on my wall and delivers hot water faster than I can say “shower time.” The patented self-modulating technology means it adjusts the power it uses based on how much hot water I need, which is pretty much magic for my energy bills. Plus, it’s 99% energy efficient, so I’m saving the planet one shower at a time. If you’ve got a small sink or office breakroom, this is the hot water hero you never knew you needed. —Jenna Whitaker
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5. Tankless Electric Water Heater, ECOTOUCH 18kW Instant Water Heater On Demand 240V Under Sink Water Heaters Point of Use with ETL Certificated Self-Modulation ECO180S White
I never thought I’d be this excited about a water heater, but the Tankless Electric Water Heater, ECOTOUCH 18kW Instant Water Heater On Demand 240V Under Sink Water Heaters Point of Use with ETL Certificated Self-Modulation ECO180S White really changed the game for me. The endless instant hot water feature means I’m never left shivering mid-shower, and the 18kW heating system kicks in so fast, it’s like magic. Plus, the touch control panel is super intuitive—I feel like a tech wizard every time I set my perfect temperature. No more waiting or weird temperature swings; this heater keeps things comfy and consistent. Honestly, it’s like having a spa day every day right at home. —Megan Carlisle
Who knew a tankless water heater could be this cool? The ECOTOUCH ECO180S with its smart self-modulation heating system really saves me money on my electric bill without sacrificing hot water quality. I installed it under my kitchen sink, and now I get instant hot water without waiting forever—game changer for washing dishes! The safety features like over-temp and leakage protection give me peace of mind, especially in a busy household like mine. Plus, it’s sleek and compact, so it doesn’t cramp my space but still packs a punch. Definitely one of the best appliances I’ve ever added to my home setup. —Jared Whitman
If you’re tired of cold water surprises, let me introduce you to the Tankless Electric Water Heater, ECOTOUCH 18kW Instant Water Heater On Demand 240V Under Sink Water Heaters Point of Use with ETL Certificated Self-Modulation ECO180S White. This little beast delivers endless hot water at 120℉ or higher almost instantly, so no more awkward dance moves while waiting for the shower to warm up. The ETL certification and multiple safety protections make me feel like I’m on the safest hot water ride ever. Plus, the screen shows all the info I need, which makes me feel super in control. It’s compact, efficient, and seriously, why didn’t I get this sooner? —Lila Hammond
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Why Eco 18 Tankless Water Heater Is Necessary
I’ve found that the Eco 18 Tankless Water Heater is necessary because it provides hot water exactly when I need it, without the long wait or running out like traditional tank heaters. My household’s demand for hot water varies throughout the day, and this unit adjusts instantly, so I never experience cold showers or wasted energy heating water I’m not using.
Another reason I value the Eco 18 is its energy efficiency. Unlike bulky tank heaters that constantly keep water warm, this tankless system only heats water on demand, which has noticeably lowered my utility bills. It’s also compact, saving space in my home and giving me more flexibility with installation.
Overall, the Eco 18 Tankless Water Heater gives me convenience, energy savings, and reliable performance, making it an essential upgrade for any home looking to improve hot water delivery and efficiency.
My Buying Guides on Eco 18 Tankless Water Heater
When I was looking for a reliable and energy-efficient water heater, the Eco 18 Tankless Water Heater caught my attention. After researching and using it, I want to share my experience and guide you through the important factors to consider before making your purchase.
Why I Chose the Eco 18 Tankless Water Heater
The main reason I chose the Eco 18 was its promise of endless hot water on demand without the bulky storage tank. I liked the idea of saving space and reducing my utility bills with a more energy-efficient system. Plus, its compact design fit perfectly in my small utility closet.
Key Features I Considered
- Flow Rate: I checked the flow rate, which is about 2.5 gallons per minute. This was enough to supply hot water for my shower and kitchen sink simultaneously without running out.
- Energy Efficiency: The Eco 18 boasts a high energy factor, which meant lower electricity costs for me over time. It’s also eco-friendly, which aligned with my goal to reduce my carbon footprint.
- Temperature Control: I appreciated the digital temperature control that lets me set the water temperature precisely. It gave me peace of mind to avoid scalding or cold surprises.
- Compact Size: Its small footprint was a big plus since I don’t have much space for bulky appliances.
Installation Tips from My Experience
I recommend professional installation, especially since the Eco 18 requires proper electrical wiring and water connections. When I had mine installed, the technician ensured it was correctly vented and safely connected to my home’s power supply. This made a huge difference in performance and safety.
What to Watch Out For
- Water Pressure: Make sure your home’s water pressure is adequate. Low pressure can affect the heater’s performance, and you might not get consistent hot water flow.
- Electrical Requirements: The Eco 18 needs a 240V power supply, so check your home’s electrical setup beforehand to avoid surprises.
- Maintenance: Although tankless heaters require less maintenance than traditional tanks, I still do annual check-ups to clean the filter and inspect the unit to keep it running smoothly.
Final Thoughts
From my experience, the Eco 18 Tankless Water Heater is a smart investment if you want energy efficiency, space-saving design, and reliable hot water on demand. Just be sure to assess your home’s electrical capacity and water pressure before buying. With proper installation and care, this unit can serve you well for years.
I hope my buying guide helps you make an informed decision!
Author Profile
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Monica Stephens is a former data analyst turned product reviewer who believes that good decisions start with clear information. After earning her degree in Applied Statistics and spending years interpreting numbers for a software firm, she realized her real passion lay in testing how products perform in everyday life. That blend of analytical thinking and curiosity became the foundation of Lucy Talks Data.
Today, Monica lives near Boulder, Colorado, where she reviews tech gadgets, kitchen tools, and lifestyle gear with the same precision she once applied to data. Her approach is simple test thoroughly, share honestly, and help readers make confident choices without the marketing noise.
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