Eemax EEM24027 Review: the best Home Electric Water Heater?

Eemax EEM24027

Last updated on May 5th, 2024 at 03:53 am

Considering a tankless electric water heater for your home improvement project?

The Eemax EEM24027 has caught our attention for its ability to provide a consistent and endless hot water supply, catering to both residential and commercial needs.

This electric heater is designed to heat water instantaneously, so you’re never left waiting.

With a 27-kilowatt capacity, it’s capable of running a shower and two sinks simultaneously in cooler climates, and even more in warmer ones. Its compact design also means you won’t be losing precious storage space.

Buyers note it’s a practical choice for space-saving efficiency and appreciated the power it brings to a home’s hot water system.

While providing potent heating ability, the Eemax EEM24027 also boasts simple maintenance and a notable energy-saving aspect when compared to traditional water heaters.

Bottom Line

For those seeking the convenience of a tankless water heater, the Eemax EEM24027 stands out as a reliable option.

Its ability to provide instant and constant hot water, aligned with its energy efficiency and space-saving profile, are qualities that deserve a nod.

Curious to see if it’s the right fit for your needs? Check out the Eemax EEM24027 on Amazon and consider making the switch to a more efficient water heating solution.

Key Features of the Eemax EEM24027

With a sleek blue finish, the Eemax EEM24027 brings a splash of color to the electric tankless water heater market.

What sets this unit apart is its on-demand heating ability, ensuring that you’re not wasting energy heating unused water. It’s smart enough to heat only as much water as you need, a feature that could result in reduced energy bills.

The design is impressively compact, freeing up much-needed space in your home. Even with its small stature, it doesn’t sacrifice power, boasting a substantial 27-kilowatt output.

This power translates to a water flow of 5.3 gallons per minute, which means you can enjoy a steady stream of hot water for your needs.

Installation requires a specific electrical setup—three 40 AMP double pole breakers and 8 AWG wire gauge. Make sure your home is equipped to handle this before making the leap.

But once in place, the EEM24027 offers considerable heating capacity without the bulk of a traditional water heater, which may be just what you’re looking for.

Lastly, the warranty speaks volumes about the manufacturer’s confidence in their product. Five years of coverage for leaks and one year for parts allow you some peace of mind when it comes to longevity and reliability.

Performance and Efficiency

When looking at the Eemax EEM24027, you’ll find that its tankless design not only saves space but also offers a continuous access to hot water on demand.

Its energy efficiency can be noticed in how it solely heats water when necessary with its copper emerson heating elements, preventing the standby energy loss common with traditional tank heaters.

Customers see a reduction in their electric bills, which points to the unit’s ability to conserve energy when compared to older tankless models or tank types.

Although the initial setup might require an upgrade to your electric system, with the installation of triple 40 AMP breakers and significant wiring, the investment can pay off over time. You might be impressed by how quickly and reliably it provides enough hot water to your home.

Some users have found the installation process straightforward, but there are cases where technical difficulties arose, suggesting the importance of ensuring all components, like the flow sensor, are correctly connected during installation.

Overall, the feedback indicates this model could be a smart choice if you’re aiming to increase efficiency and enjoy instant hot water in your home. However, as with any appliance, there can be instances of malfunction, which is something to consider when making your decision.

Installation Process

For those of you looking at the Eemax EEM24027, it’s important to note that setting it up is more involved than plugging it in—this is a unit that requires thoughtful installation.

You’ll need to ensure that the electrical infrastructure in your home can support 3 x 40 AMP double pole breakers and that you have wires at 3 X 8 AWG, as the manufacturer suggests. Size-wise, its compact dimensions mean it won’t demand much space.

Now, the installation is doable by a seasoned DIY’er with a solid understanding of electrical systems; however, if you’re not comfortable with detailed electrical work, hiring a professional is recommended to get it up and running safely.

A correct install is crucial for optimal performance and adhering to the product warranty, which generously covers 5 years for leaks and 1 year for parts.

Given its technical requirements, the difficulty level leans towards challenging, but once installed, the promise of on-demand hot water in one shower and two sinks—or more, depending on your climate—is a tempting payoff.

Performance in Different Climates

When venturing into the realm of on-demand hot water with the Eemax heater, your location’s climate plays a notable role. The robust design of this model maintains efficiency in both warm and colder regions.

In warmer climates, the unit’s heating capability is optimized, providing a consistent flow of hot water with less energy required because of the already higher inlet water temperatures.

However, in colder regions, you might notice a higher power demand to reach your desired temperature, especially if you prefer a steamy hot shower. That’s not to say it falls short in performance.

The heater adjusts its output accordingly, working a bit harder to compensate for the cold. It adapts to ensure you aren’t left in the cold during those brisk mornings.

Remember, a drop in flow rate could occur in chilly conditions since the unit must heat incoming water to a high temperature over a short period. Despite this, users generally note that temperature output remains consistent, which is crucial during those frigid winter months.

Overall, the Eemax model proves to be adaptable and steadfast, a reliable choice for diverse weather conditions without any dramatic compromise on its performance.

Pros and Cons


When considering the Eemax EEM24027 Electric Tankless Water Heater, your experience with hot water in your home will likely improve significantly. Users frequently mention the ease of installation, which means you won’t be spending extra time or stress setting it up.

Imagine having a continuous supply of hot water on demand, without the wait – that’s what several users experienced with this heater.

Not only does it save space with its compact design, but your electric bill could also see a decrease, as evidenced by user comments noting monthly savings.

  • Ease of Installation: Many users found the installation process straightforward, taking less than a day for most.
  • Continuous Hot Water: You can expect a steady hot water flow without the limitations of a tank.
  • Space-Saving: Owing to its compact size, it won’t hog unnecessary space in your home.
  • Energy Efficiency: A decrease in electric bills was noted by some, making it a potentially cost-effective choice in the long-run.
  • Safety: It is ETL listed for safety standards.


However, no product is without its downsides. Based on user reviews, some faced technical issues after the purchase, such as a detached flow sensor.

The customer service experience was not smooth for everyone, with one user having difficulty obtaining a complete technical manual from Eemax.

Another concern is the power draw; while the heater is energy efficient, it does require a significant amount of electricity when in use, which could be an issue if your home is not equipped to support it.

  • Technical Troubles: There have been instances of initial defects, like a disconnected flow sensor in the unit.
  • Customer Service: Obtaining detailed product information was challenging for some, with slow or incomplete responses reported.
  • High Electricity Draw: Be aware it pulls a noticeable amount of electricity, which may require electricity infrastructure upgrades to accommodate it.
  • Durability Concerns: A handful of users reported a shorter than expected lifespan, necessitating hopefully infrequent replacements.

Customer Reviews

Exploring how the Eemax EEM24027 has fared with users, its performance seems to create a buzz. Many confidently share their successful shift from traditional units to this tankless model, noting a seamless installation process that takes just a few hours.

One of the highlights for you might be the continuous supply of hot water it promises, complementing your day-to-day needs elegantly.

Yet, every rose has its thorn; some customers mention that their initial delight with the heater’s efficiency chills a bit when faced with a malfunctioning unit or requiring multiple contacts with customer support to fully grasp the product’s technical aspects.

To your relief, others witness a noticeable dip in their electric bills, a pleasant surprise that sweetens their overall experience.

Still, a few buyers express frustrations over durability with instances of the heater failing prematurely and a perceived lack of support from the retailer.

On the flip side, others who purchased the heater applaud the noticeable impact on reducing their energy bills, an aspect you may find particularly appealing.

While experiences with the Eemax EEM24027 vary, it’s the kind of product where the pros and cons pondered together will guide you best.


In summarizing this electric heater’s journey, it’s clear that it excels in providing continuous hot water efficiently, with customers highlighting the significant reduction in electric bills and the convenience of a steady hot water supply at an afforable price from the Amazon store.

Installation is another plus—despite the initial setup—which involves substantial electrical work, the process is straightforward enough to be completed in a few hours. While it may cause a slight increase in electricity usage when operating, the overall monthly savings are notable.

However, it’s not without flaws. There have been isolated incidents of units failing prematurely as well as some customer service hiccups reported. These instances, though rare, are worth considering when making your decision.

Reflecting upon its overall performance, if you’re in the market for an upgrade from a traditional tank heater or replacing an older tankless model, the Eemax EEM24027 stands out as a robust choice that could lead to long-term savings and convenience, provided that the installation is properly managed.

Your satisfaction may hinge on the reliability over time, but with its high ratings and positive impact on energy expenditure, it could be a worthwhile investement for your home.

Other Relevant Products to Consider

While the Eemax EEM24027 brings value with its efficiency and capability to service multiple outlets, it’s worth exploring other options to find the one that aligns perfectly with your unique needs.

If you’re on the lookout for alternatives, here are a few other tankless water heaters you might want to consider:

  • Rheem RTEX-13: This unit is an excellent choice if you’re seeking something more compact for a small household or apartment. The RTEX-13 is praised for its easy installation and its ability to provide a steady stream of hot water on demand.
  • Stiebel Eltron Tempra 24 Plus: Known for its advanced flow control technology, which ensures a consistent water temperature even when demand fluctuates, the Tempra 24 Plus is designed for those looking for a seamless experience. This is a solid option for energy-conscious consumers who appreciate subtle sophistication in design.
  • EcoSmart ECO 27: If eco-friendliness is high on your priority list, then the EcoSmart ECO 27 could be your match. It’s one of the most popular models for those wanting to reduce their carbon footprint while also catering to the hot water needs of a medium to a large family.

Each of these alternatives stands out for different reasons, and they could be more aligned with what you’re looking for in terms of size, performance, or energy efficiency. Be sure to check out the product details of these heaters before considering them.

Remember to consider your household’s specific hot water requirements and available space when choosing the ideal tankless water heater.


  • Edmund Yeo

    🌱 I'm passionate about sustainable living and renewable energy, and I'm thrilled to share my journey towards a greener, brighter future with you. Join me as I explore the latest innovations, eco-friendly lifestyle tips, and inspiring stories from the forefront of the green energy revolution. Note: This website uses affiliate links which may earn a commission for purchases made at no additional cost to you.

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