Description
Highlights of the EcoSmart ECO 27 Tankless Water Heater
The EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW has several features that stand out on the spec sheet. The digital temperature display is a genuine differentiator, setting the water temperature in 1-degree increments, which means precise control over hot water output. Its self-modulating flow sensor technology adjusts the energy used based on demand, so it does not overheat or waste electricity. This results in a stated 99.8% energy efficiency rating, which is where the difference against an older tank heater shows up on a utility bill. The unit’s size is compact at 17 x 17 x 3.5 inches, which saves considerable wall space, an absolute boon for tight utility rooms. The heater is rated to deliver between 2.7 to 6.5 gallons per minute, depending on the incoming water temperature, which 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 worth flagging. 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 is not plug-and-play; it involves professional wiring and, in many homes, upgrades to the existing 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 is specified particularly for cold climates or setups where water temperature can drop below 45°F. Its patented self-modulating technology is rated to deliver consistent hot water even at inlet temps as low as 37°F, which is the figure that matters on chilly mornings. The copper heat exchanger and brass-topped Emerson heating elements minimize corrosion and electrolysis, which makes the unit durable under demanding conditions. The published spec of a steady output temperature within 1 degree of the set point is no small feat for electric models. With multiple fixtures in use, the heater holds a decent flow rate without large dips in temperature, although pushing beyond 6 gallons per minute is where owner reports note slight temperature drops.
Installation and Space Efficiency
The wall-mounted design is notable because it is roughly 90% smaller than traditional tank water heaters. That reclaims a good chunk of space in a utility area 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 is essential. The pipe fitting is a standard 3/4 inch NPT, which makes 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
Competitors worth weighing include the Stiebel Eltron Tempra Plus and the Rheem RTEX series, which are also electric tankless heaters. The EcoSmart ECO 27 rates ahead of many on 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 distinguishing 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
The practical appeal of an on-demand unit is that hot water does not run out, which removes the queue for the shower in a busy household. The digital temperature display means anyone can dial in a preferred warmth without guesswork. Running the dishwasher and a shower simultaneously stays within the rated capacity, though owner reports note that pushing the limits causes a slight temperature dip. Its cold-inlet rating is the specification that carries the load in colder regions, where efficiency usually falls off. The automatic resettable thermostat is the overheating safeguard, adding a layer of safety that matters on a 27-kW appliance.
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 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.
