Best Whole House Electric Tankless Water Heater – (2024’s Top Models)

Are you looking to upgrade to a whole-house electric tankless water heater that will provide hot water on demand and save you energy in the long run? Installing a tankless water heater is a great way to ensure your home has continuous access to hot water – from laundry rooms and bathrooms to outdoor garden spigots. With so many options, however, it cannot be easy. But Don’t worry! In this article, we’ll provide a detailed introduction to the best whole house electric tankless water heater so that you can confidently pick out the perfect one. We’ll also discuss the features to look out for when deciding. So you can ensure you get the best tankless water heater for your home that will meet all your requirements. We will look at the top 5 tankless water heater models that are energy-efficient, reliable, and offer excellent warranties. So, if you want to upgrade and enjoy the advantages of a tankless water heater, read on to find out which model is best for you. Without further ado, let’s dive right in!

Quick shopping picks for the best whole house electric tankless water heater?

Tankless water heaters are gaining popularity due to their energy efficiency and space-saving benefits. They can provide hot water on demand, helping you save money on utility bills. But with so many different models available, knowing the right one for your home can be hard. That’s why we’ve compiled this quick guide to help you decide on the best whole house electric tankless water heater for your needs.

Best Pick

Eemax HA036240 240V 36 kW Electric Tankless Water Heater

Eemax HA036240 240V 36 kW Electric Tankless Water Heater

  • Item Weight : 17.4 pounds
  • Power Source: AC/DC
  • Capacity: 36 Gallons

Staff Pick

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

  • Item Weight : 17.8 Pounds
  • Power Source: AC/DC
  • Capacity : 5.9 Gallons

What are our recommendations for the best whole house electric tankless water heater?

Tankless water heaters are becoming increasingly popular in households around the world. And for good reason! They offer several advantages over traditional storage tank water heaters, such as lower running costs and greater energy efficiency. But which is the best whole-house electric tankless water heater? After extensive research and consultation with industry experts, our top 5 picks for the best whole house electric tankless water heaters are:

Design

Product

Features

Price

Eemax HA036240 240V 36 kW Electric Tankless Water Heater
  • Power Source: AC/DC
  • Item Weight : 17.4 Pounds
  • Capacity: 36 Gallons
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray

  • Power Source: Ac/Dc
  • Item Weight : 17.8 Pounds
  • Capacity: 5.9 Gallons
EcoSmart ECO 18 Electric Tankless Water Heater
  • Power Source: Ac/Dc
  • Item Weight : 14 Pounds
  • Capacity: 5 Gallons
Bosch Electric Mini-Tank Water Heater
  • Power Source: Battery Powered
  • Item Weight : 17.3 Pounds
  • Capacity: 4 Gallons
EcoSmart ECO 27 Tankless Water Heater
  • Power Source: Electric Powered
  • Item Weight : 6.6 Pounds
  • Capacity: 3 Gallons

1: Eemax HA036240 240V 36 kW Electric Tankless Water Heater

Best electric tankless water heater for whole house

The Eemax HA036240 Electric Tankless Water Heater is the perfect solution for homeowners looking to save both money and energy. It’s boasting a 99% thermal efficiency and up to 90% space savings. This tankless water heater will drastically reduce your utility bill while minimizing standby heat loss. Not only that, but it offers greater safety compared to large tank water heaters, as it eliminates the risk of dangerous temperature levels and spikes. With precise outlet settings (+ or – one-degree accuracy) and an unlimited hot water supply, you’ll enjoy decades of trouble-free Eemax Electric Tankless Water Heater performance. It’s the perfect combination of safety and efficiency for any homeowner looking to get the most from their water heating system.

Whether you want to save money, energy, or space, the Eemax HA036240 Electric Tankless Water Heater will meet your needs. Plus, with a sleek design and straightforward installation process, it’s perfect for any homeowner who wants to get hot water on demand. Get ready to experience the peace of mind of owning an efficient, hassle-free water heating system. Eemax’s Electric Tankless Water Heater is the perfect choice for any homeowner looking to get hot water on demand without breaking the bank. So why wait? Get your Eemax HA036240 today and start experiencing instant savings, energy efficiency, and safety that will last years.

Key Features:

When you choose Eemax’s Electric Tankless Water Heater, you get the following features:

  • 1: High efficiency –  Eemax Electric Tankless Water Heater has a 99% thermal energy efficiency that saves you money on your energy bills.
  • 2: Space-saving –  The Eemax Tankless Water Heater can save up to 90% of space compared to large tank water heaters, allowing you to install it anywhere without taking up too much space.
  • 3: No standby heat loss – With Eemax Electric Tankless Water Heater, you don’t have to pay to keep water hot in a large storage tank 24/7. This also helps to reduce your carbon footprint.
  • 4: Accurate temperature control – The Eemax Tankless Water Heater has sophisticated computer-controlled micro-processing temperature control models that provide unlimited hot water at precise outlet settings with + or – one-degree accuracy.
  • 5: Long-lasting performance – The Eemax Tankless Water Heater runs on safe electricity and has no venting requirements or carbon monoxide danger, making it reliable and durable for decades of trouble-free performance. It can also last nearly twice as long as a tank heater.
Pros
  • 99% thermal energy efficiency.
  • Minimizes standby heat loss by not keeping water hot in a large storage tank 24/7.
  • 90% space saving compared to large tank water heaters.
  • Unlimited hot water at precise outlet setting (+ or – one-degree accuracy)
  • Long-lasting and durable with trouble-free performance.
Cons
  • Expensive initial cost.
  • Difficult to install without professional help.
Why should you buy this?

The Eemax Energy-Saving Electric Tankless Water Heater is ideal for on-demand hot water. It offers unbeatable energy-saving performance and up to 90% space savings compared to tank heaters. It also helps reduce your carbon footprint and provides pinpoint temperature control, perfect for scald prevention. With its reliable construction and long lifespan, this tankless water heater is an excellent investment for the long term. Invest in Eemax today and enjoy the endless hot water it provides!


2: Rheem RTEX-24 24kW 240V Electric Tankless Water Heater

Best rated whole house electric tankless water heater

The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is ideal for a reliable and efficient water heater with maximum performance. This electric tankless water heater packs plenty of power, boasting a powerful heat output of 24 kilowatts and a high voltage rating of 240 volts. The robust stainless steel construction ensures that the tankless water heater is built to last, and its wall-mounting setup allows it to be securely mounted in any home. It also features a maximum operating pressure of 150 pounds per square inch and a maximum pressure of 150 pounds per square inch. This product makes hot water delivery easier and faster than ever before, helping you save time and money on your utility bills.

With this electric tankless water heater, you’ll get a high-quality performance that will keep your home’s hot water supply running stronger and longer than ever before. Whether you need hot water for bathing, laundry, or dishwashing, the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is a great choice. Thanks to its efficient design, it is an energy-saving device that can help you save up to 50% on your utility bills. Its quick response time, low standby losses, and superior temperature control provide you with the hot water you need when you need it most. With all these features, you’ll get a top-notch product that delivers reliable hot water for years. So, if you’re looking for an efficient and budget-friendly way to get your household’s hot water supply, look no further than the Rheem RTEX-24 24kW 240V Electric Tankless Water Heater!

Key Features:

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is an advanced product that offers several features:

  • 1: Compact and lightweight design –  The Rheem RTEX-24 is designed to fit in tight spaces, making it great for both indoor and outdoor applications. It is also lightweight, so you can easily install it yourself.
  • 2: Advanced Temperature Control –  The advanced temperature control system of the Rheem RTEX-24 allows users to adjust the temperature from 80 to 140°F with precision accuracy.
  • 3: High Energy Efficiency – With its energy efficiency of up to 99%, the Rheem RTEX-24 maximizes your hot water needs while minimizing energy costs.
  • 4: Durable and Corrosion Resistant – The stainless steel construction of the Rheem RTEX-24 is durable and corrosion-resistant, ensuring a long lifespan even in extreme conditions.
  • 5: Low NOx Emissions – With its low NOx emissions, the Rheem RTEX-24 is excellent for the environment and your wallet. You can minimize your energy costs while helping to reduce air pollution.
Pros
  • Highly efficient, reducing energy costs and hot water bills dramatically.
  • Compact design takes up minimal space while providing an endless hot water supply.
  • Very little maintenance is required, as no storage tank needs to be cleaned or serviced regularly.
  • Automatic temperature control ensures you never run out of hot water and temperatures remain consistent.
  • Easy to install and can be wall-mounted for convenience.
Cons
  • Higher upfront cost compared to traditional tank water heaters.
  • Not suitable for areas with inconsistent power supply as it relies on a steady and constant source of electricity.
Why should you buy this?

The Rheem RTEX-24 electric tankless water heater is an excellent choice for your home. It is incredibly efficient, providing hot water on demand while saving you monthly money on your energy bill. Its small size and wall mount installation make it easy to install in most locations. The stainless steel construction makes it durable and corrosion-resistant, ensuring its long life. Its 24 KW power rating allows for ample hot water, while the 150-pound pressure rating ensures it can handle your most demanding needs. This is an excellent choice for a reliable, energy-efficient, whole-house electric tankless water heater.


3: EcoSmart ECO 18 Electric Tankless Water Heater

Best whole house electric tankless hot water heater

The EcoSmart ECO 18 Electric Tankless Water Heater is a great way to save energy and money on your water heating bills. It features patented self-modulating technology that allows you to adjust the wattage for optimal performance, so it only uses the energy necessary for hot water. This 18 KW tankless electric heater has a 5-gallon capacity and can provide up to 5 gallons per minute of hot water. It has a compact design that fits almost anywhere and requires minimal installation. With its UL-499 certification, you can be sure it is built to last and will keep your family safe from any risks associated with electrical products. The EcoSmart ECO 18 Electric Tankless Water Heater is a great way to save energy while still providing hot water on demand.

It is the perfect solution for any home or business. With its patented technology, you can be sure you’re getting the most efficient energy usage possible. This model also has a lifetime warranty on the electronics, exchanger, and element, so you know it is built to last. Whether you are looking for a great way to save money or want hot water whenever you need it, this electric tankless water heater is a great choice. Whether replacing an old system or installing one for the first time, EcoSmart has a solution that will provide hot water on demand without costing you a fortune.

Key Features:

EcoSmart ECO 18 Electric Tankless Water Heater is an excellent choice for any house, as it has many features that make it stand out from other water heaters.

  • 1: Self-Modulating Technology – This water heater automatically adjusts its output based on how much hot water is needed, so you don’t have to monitor and adjust the temperature constantly.
  • 2: Compact Design –  This water heater is 17″ x 14″ x 3.5″, so it won’t take up too much space, which is ideal for smaller homes and apartments.
  • 3: Energy Efficient – With an energy factor of 0.82, this electric tankless water heater is more efficient than many conventional models, helping to reduce your monthly energy bills.
  • 4: Durable – Constructed from plastic, this water heater can withstand the elements and last for many years of use.
  • 5: UL-499 Certified – This electric tankless water heater has been safety tested and certified by Underwriters Laboratories, providing peace of mind that it will work as promised.
Pros
  • Patented self-modulating technology helps conserve energy and lower utility bills.
  • Compact size allows for easy installation on walls in tight spaces.
  • Adjustable digital thermostat allows users to set the desired temperature from 80°F – 140°F.
  • Environmentally friendly as it releases no harmful emissions or pollutants into the atmosphere.
  • Ideal for whole house or point-of-use applications.
Cons
  • Limited to a maximum temperature of 140°F, which may not be hot enough for some users.
  • Requires professional installation, which can add costs if hiring an electrician.
Why should you buy this?

This electric tankless water heater offers a great combination of affordability and power. It features patented self-modulating technology that saves energy while providing plenty of hot water when needed. The 18 kW power output is enough to supply the year-round needs of an entire household, making it one of the best whole-house electric tankless water heaters available on the market. This product also comes with a lifetime warranty, ensuring it is built to last and stand up to years of use. With its excellent combination of features at an affordable price, the EcoSmart ECO 18 Electric Tankless Water Heater is sure to be a great addition to any home.


4: Bosch Electric Mini-Tank Water Heater

Top rated whole house electric tankless water heater

This Bosch Electric Mini-Tank Water Heater Tronic 3000T 4-Gallon (ES4) is an excellent and innovative choice for those looking to eliminate the time-consuming task of waiting for hot water. It uses electric energy with 1440 watts of power and a voltage of 120 volts, ensuring that you get your hot water fast. This product also features a compact and sleek design, making it perfect for installation in tight spaces. Its 13.75″x 13.5 “x 13.75” dimensions make it easy to fit onto shelves, walls, or floors, and the lightweight 17.3lb construction allows hassle-free installation. The white color of this product also ensures that it can easily blend into any decorating scheme and not stand out. The ES4 Tronic 3000T comes with a 6-year warranty on the unit and a 2-year warranty on parts, guaranteeing customer satisfaction and peace of mind knowing that Bosch quality products back you.

This product is perfect for anyone looking to have hot water ready at any moment without waiting for it anymore. Get your own Bosch Electric Mini-Tank Water Heater Tronic 3000T 4-Gallon (ES4) and enjoy hot water whenever needed!

Key Features:

Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) is an ideal choice for areas with limited space and offers a fast, hot water supply.

  • 1: Compact and Space-Saving Design – The heater’s small size allows it to fit in tight spaces, making installation quick and easy. It can be conveniently mounted on a shelf, wall, or even floor.
  • 2: Rapid Heating –  This water heater features advanced technology that heats up quickly and operates quietly. You don’t have to wait for the hot water as it is ready in no time.
  • 3: High Efficiency – This electric mini-tank heater has a capacity of 4 gallons and a wattage of 1440 watts, allowing it to provide instant hot water at an economical rate.
  • 4: Energy Efficient – The ES4 Tronic 3000 T has advanced energy-saving features to maximize efficiency and performance. It automatically shuts off when not in use, reducing energy consumption.
  • 5: Easy Installation – The ES4 Tronic 3000 T comes with all the necessary components for a proper installation and includes rough plumbing parts for a quick setup. Plus, it has a 6-year warranty on the unit and 2 years on its parts.
Pros
  • Compact design allows it to fit in tight spaces, making it perfect for small bathrooms or laundry rooms.
  • It is easy to install and can be mounted on a shelf, wall, or floor.
  • A fast recovery rate – provides an immediate hot water supply when needed.
  • The energy-saving mode helps reduce electricity costs.
  • Comes with a 6-year warranty on the unit and a 2-year warranty on parts.
Cons
  • It is more expensive than other tankless water heaters, but its energy efficiency and reliability can help compensate for that cost over time.
  • Its maximum temperature is lower than other models, so that it won’t work well for households with high hot water demands.
Why should you buy this?

The Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) is one of the best tankless water heaters on the market. It delivers hot water instantly and reliably with its 1440-watt power source. It has a 6-year warranty on the unit and 2 years for parts, which means you can depend on it for long-term use. Its compact size makes it perfect for mounting on a shelf, wall, or floor. Its sleek white colour will blend perfectly with any bathroom or kitchen decor. Get the Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4), and never worry about running out of hot water again!


5: EcoSmart ECO 27 Tankless Water Heater

Best home electric hot water heater

The EcoSmart ECO 27 Tankless Water Heater is an excellent option for an efficient and reliable water heater. This electric tankless model features a 3-gallon capacity and can heat up to 6.6 gallons of water per minute, making it ideal for whole-house use. It uses a 3 x 40 AMP Double Pole Breaker (Electric) to power the 27 Kilowatts of heat output, and the maximum temperature is a toasty 120 Degrees Fahrenheit. It has an attractive white plastic finish that’ll fit in with any decor, and it also comes with a lifetime warranty on electronics, exchangers, and elements. With its small 17 x 17 x 3.5 size, this model can easily be wall-mounted to free up extra space. Whether you’re looking for an energy-efficient solution or upgrading your home’s water heater, the EcoSmart ECO 27 Tankless Water Heater is a great choice.

. It offers consistent performance and delivers endless hot water on demand for your household. Plus, it’s easy to install and maintain so that you can enjoy a worry-free water-heating experience for years. With its powerful 27 Kilowatts of heat output, you can trust that the EcoSmart ECO 27 Tankless Water Heater will provide consistent and reliable performance no matter your needs. So, if you’re looking for a dependable water heater that won’t break the bank, consider investing in the EcoSmart ECO 27 Tankless Water Heater. It’s an excellent option for those who want to save energy and money while enjoying hot water whenever needed. With its reliable performance and attractive design, you can trust that this model will always deliver quality results. So don’t wait any longer and get the EcoSmart ECO 27 Tankless Water Heater for your home today!

Key Features:

EcoSmart ECO 27 Tankless Water Heater offers several features, making it an ideal choice for whole-house use. Let’s take a look at some of the highlights that make this electric tankless water heater stand out from the competition:

  • 1: Compact Design –  With its small and compact design, the EcoSmart ECO 27 Tankless Water Heater can fit in smaller spaces than many other tankless water heaters on the market. This makes installation easy and convenient for any home.
  • 2: High Efficiency –  The heater’s high-efficiency rating of up to 99% will help you save money on your energy bills.
  • 3: Adjustable Heat Output – With adjustable heat output up to 120 degrees Fahrenheit, this electric tankless water heater can handle whatever temperature you need for your home’s hot water needs.
  • 4: Long Lifespan – EcoSmart ECO 27 Tankless Water Heater is made with quality materials and built to last, making it a reliable and cost-effective investment.
  • 5: Easy Installation – This electric tankless water heater comes with all the necessary parts for an easy installation process that anyone can do. Plus, it is UL-listed for safe operation in any home.
Pros
  • Compact design, measuring only 17 x 17 x 3.5 inches.
  • Can be mounted on the wall for convenient use and storage.
  • Save up to 50% of your water heating bills with this tankless heater instead of conventional tank-style heaters.
  • Produces hot water at a rate of 6.6 gallons per minute, which is enough to power several appliances without interruption.
  • Produces hot water at a rate of 6.6 gallons per minute, which is enough to power several appliances without interruption.
Cons
  • Requires three 40 amp double pole breakers for electric connection, which may not be present in all households or offices.
  • This heater is not suitable for very cold climates as it may not be able to heat the water efficiently and quickly in extreme temperatures.
Why should you buy this?

The EcoSmart ECO 27 Electric Tankless Water Heater is best for whole-home hot water heating. With its advanced digital temperature control, you can be sure of a consistent hot water supply with an impressive maximum flow rate of 6.6 gallons per minute. The unit provides up to 27 kilowatts of heat output and can reach temperatures up to 120 degrees Fahrenheit. Additionally, it’s backed by a lifetime warranty on electronics, exchangers, and elements for peace of mind. Get the perfect temperature every time with this powerful and reliable tankless water heater.


What are our recommendations for the best whole house electric tankless water heater?

When choosing the best whole house electric tankless water heater, there are a few things to consider. First and foremost, you need to determine how much hot water your family will require daily to size the tankless heater properly. Secondly, it’s essential to consider the energy efficiency of the unit and any additional features that may be beneficial. Finally, you should consider the warranty accompanying the unit and ensure that it is reliable for long-term use. Considering these factors, one of our top recommendations for large families would be Eemax’s HA036240 36 Gallon Electric Tankless Water Heater. This powerful water heater is made with durable stainless steel construction and can produce up to 8 gallons of hot water per minute. It is ANSI/NSF certified and offers an impressive 5-year warranty, giving families peace of mind that their purchase will be reliable for years. The tankless design also helps to keep energy costs low since it only heats the water you need when you need it – instead of continuously keeping a large tank full. For families looking for a reliable and energy-efficient water heater, the Eemax HA036240 is an excellent choice. The power, efficiency, and reliability combination make it one of the market’s best whole-house electric tankless hot water heaters.

Relevant Questions:

Can an electric tankless water heater run a whole house?

Electric tankless water heaters can provide hot water for an entire home. For larger households or high-demand applications, you may need to install two or more units in order to ensure adequate hot water supply. Additionally, some tankless water heaters can connect multiple units for added convenience and functionality. Connecting multiple tanks could also help reduce energy costs since it allows you to adjust the temperature settings for each unit. So, if your home needs a lot of hot water, electric tankless solutions might be worth exploring.

What is one disadvantage of a whole-house tankless water heater?

One of the biggest disadvantages of installing a tankless water heater is the higher initial purchase and installation cost. Tank-style water heaters typically cost around $900, while tankless options can exceed $3,000 for installation. Additionally, tankless water heaters often require certain structural modifications to be installed correctly, increasing the overall cost even more. As a result, most homeowners will need to balance the long-term benefits of lower energy costs against the short-term expense of higher upfront installation and purchase prices.

Why avoid a tankless water heater?

Tankless water heaters are not recommended in areas prone to power outages as they need electricity. If there is an outage, hot water will be unavailable until the power returns. Tank-style models retain hot water in their tanks and can provide it during a short blackout. Thus, tank-style models are the better option for those living in areas prone to outages.

Are electric tankless water heaters good?

Electric tankless water heaters are an excellent option for those looking to reduce energy costs while saving on space. They offer higher energy efficiency than traditional water heaters, with an Excellent rating for gas models and a Fair rating for electric ones. With no bulky storage tanks taking up valuable space in your home, tankless models can provide hot water quickly and efficiently when needed. Plus, their long-term energy savings are significant compared to conventional water heaters. A tankless electric water heater can offer reliable hot water for years with proper installation and maintenance.

Conclusion Paragraph

In conclusion, installing a whole-house electric tankless water heater is an excellent choice for anyone looking to make their home more energy efficient and save money in the long run. There are many kinds of whole house electric tankless water heaters available on the market, but among them are Eemax HA036240 240V 36 kW Electric Tankless Water Heater, Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, EcoSmart ECO 18 Electric Tankless Water Heater, Bosch Electric Mini-Tank Water Heater and EcoSmart ECO 27 Tankless Water Heater. Each of these has pros and cons that could help you decide which one will most suit your specific requirements. While all these can provide the necessary hot water, you must do your due diligence in researching any costly installation like this. Factors such as cost, safety measures, and energy efficiency should be considered when selecting your best whole house electric tankless water heater purchase and in regard to any services or repair needs down the line. By doing so, you can ensure that you get the most out of your investment – both financially and from an environmental perspective. With all this information, we hope you’re considering switching to a whole-house electric tankless water heater!

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