EcoSmart ECO 27 Tankless Water Heater Review High Efficiency Electric Heating Performance

Description

Highlights of the EcoSmart ECO 27 Tankless Water Heater

Using the EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW myself, I found several features that stand out. The digital temperature display is a game-changer, allowing me to set the water temperature in 1-degree increments, which means precise control over my hot water needs. Its self-modulating flow sensor technology intelligently adjusts the energy used based on demand, so it never overheats or wastes electricity. This results in an impressive 99.8% energy efficiency rating, something I noticed instantly in my energy bills compared to my old tank heater. The unit’s size is compact at 17 x 17 x 3.5 inches, which saved me considerable wall space—an absolute boon for tight utility rooms. The heater can deliver between 2.7 to 6.5 gallons per minute, depending on the incoming water temperature, which in my experience is sufficient for whole-home applications in colder climates or for larger bathrooms with Roman tubs.

• Precise temperature control with a digital display
• High energy efficiency of 99.8%
• Compact wall-mount design saves space

Drawbacks That You Should Consider

Despite the many positives, there are a few downsides that became clear during use. The unit demands a hefty electrical setup, requiring three 40-amp double pole breakers and a 200-amp panel recommendation, which not every home may have readily available. Installation was not exactly plug-and-play; it involved professional wiring and some upgrades to my electrical system. Also, the maximum flow rate of 6.5 gallons per minute might not be enough for larger households with several simultaneous high-demand water uses, like multiple showers running alongside a dishwasher. Another point is the lack of included batteries or backup power, so during outages, no hot water unless you have a generator. The device is also restricted to a maximum temperature of 120 degrees Fahrenheit, which might not satisfy those who prefer hotter water for cleaning or bathing.

• Requires significant electrical capacity and upgrades
• Limited maximum flow rate for very large households
• No battery backup for power outages

Performance in Cold Climates and High Flow Situations

This electric tankless water heater shines particularly in cold climates or in setups where water temperature can drop below 45°F. Its patented self-modulating technology ensures it delivers consistent hot water even at inlet temps as low as 37°F, which I tested by running it during chilly mornings. The copper heat exchanger and brass-topped Emerson heating elements minimize corrosion and electrolysis, which makes the unit durable under demanding conditions. I was impressed by the steady output temperature within 1 degree of the set point, which is no small feat for electric models. On days when multiple fixtures were in use, the heater managed to maintain a decent flow rate without noticeable dips in temperature, although pushing beyond 6 gallons per minute did cause some slight temperature drops.

Installation and Space Efficiency

The wall-mounted design fascinated me because it is roughly 90% smaller than traditional tank water heaters. This meant reclaiming a good chunk of space in my utility area that was previously taken up by a bulky tank. Installation, however, is technical. It requires three 40-amp breakers and 3 sets of 8 AWG wiring, so professional help was essential. The pipe fitting is a standard 3/4 inch NPT, which made plumbing straightforward, but the electrical demands might be a barrier for some. The unit weighs just under 11 pounds, making it manageable for mounting, but the wiring and breaker requirements mean this is not a DIY job for the average homeowner.

Value Proposition: Is It Worth the Investment?

Considering the features and energy efficiency, this tankless water heater offers a solid price-to-quality ratio. The limited lifetime warranty on electronics, heat exchanger, and elements adds peace of mind, though it does not cover labor costs, which can add up if professional servicing is needed. The savings on energy bills can be significant over time due to the 99% thermal energy efficiency and the fact that it only heats water on demand. Compared to traditional tank heaters that keep water hot all day, this model definitely reduces standby losses. While the initial electrical setup might feel pricey, the long-term benefits and space savings make it a smart spending choice for those who want on-demand hot water without the bulk.

Alternative Offerings and How It Stacks Up

I’ve looked into competitors like the Stiebel Eltron Tempra Plus and the Rheem RTEX series, which are also electric tankless heaters. The EcoSmart ECO 27 outperforms many in terms of energy efficiency and compact design. For instance, Stiebel Eltron models often come with quieter operation but tend to be more expensive and less energy efficient. Rheem units can handle higher flow rates but usually require more space and have less advanced temperature control. The self-modulating technology on this unit is a unique feature that many rivals lack, helping to optimize electricity use. However, the heavy electrical requirements put it on par with competitors, so installation complexity is a common theme across the board.

User Experience and Real-Life Use Cases

My family quickly adapted to having endless hot water, which meant no more fights over who gets the shower first. My wife appreciated the digital temperature display, tweaking it to her preferred warmth without guesswork. My teenage kids tried running the dishwasher and shower simultaneously, and the water stayed hot enough for comfort—though pushing the limits did cause a slight temperature dip. Friends visiting from warmer states were impressed by how well it handled cold water input, maintaining efficiency without any noticeable lag. The automatic resettable thermostat gave me confidence that the unit would prevent overheating, adding a layer of safety that I valued highly.

Positive Features That Make a Difference

• Endless on-demand hot water, eliminating the risk of running out
• Energy-efficient operation reducing utility bills significantly
• Compact size ideal for tight spaces, freeing up valuable room
• Robust construction with copper heat exchanger and brass heating elements for durability

This water heater truly delivers on its promise of efficient, reliable heating, especially for homes in colder areas or with high water demand. While the electrical setup demands are not trivial, the long-term benefits and consistent performance justify the effort for many users.

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