Best Electric Hot Water Heaters: Top 5 Reviewed

Hot water is an essential part of daily life, whether you’re showering, washing dishes, or doing laundry. The frustration of running out of hot water can disrupt your routine and lead to discomfort. Choosing the right electric hot water heater can solve this problem, providing a reliable source of hot water whenever you need it.

When selecting an electric hot water heater, consider factors like size, efficiency, and installation requirements. The best models offer on-demand hot water, energy savings, and compact designs that fit your space. Understanding your household’s hot water needs is crucial to making an informed decision.

In this guide, we review five top-rated electric hot water heaters. Each model has unique features tailored to different needs, from compact designs for small apartments to high-capacity systems for larger households. Let’s explore these options to find the perfect fit for your home.

Compare the key specifications of our top picks in the table below.

Features	Rheem RTEX-24	GE Appliances 18 Gallon	110V Tankless Heater	18kW Tankless Heater	Rheem 11kW
Model Type	Tankless	Tank	Tankless	Tankless	Tankless
Power Rating	24kW	18 Gallons	3000W	18kW	11kW
Flow Rate	5.9 GPM	Not Specified	0.3-0.5 GPM	4.9 GPM	2.68 GPM
Thermostat Control	1°F increments	Adjustable	Digital Display	1°F increments	1°F increments
Best For	Large households	Small homes	Compact spaces	Medium homes	Multi-fixture use

Rheem RTEX-24 24kW 240V E…

The Rheem RTEX-24 is a powerful tankless electric water heater designed for larger households or situations where multiple hot water outlets are in use simultaneously. With a capacity of up to 5.9 gallons per minute (GPM), it can satisfy the hot water demands of showers, dishwashers, and laundry machines running at the same time.

This model stands out for its energy efficiency and on-demand heating capability. Unlike traditional tank heaters, the RTEX-24 provides hot water only when needed, reducing energy waste. It features digital thermostatic controls, allowing users to set the temperature precisely within a range of 80°F to 140°F, ensuring comfort and safety.

However, installation does require a significant electrical setup, including three 40-amp double-pole breakers and a minimum 200-amp service panel. If your home doesn’t meet these requirements, installation could become costly or complicated.

• Power: 24kW
• Flow Rate: Up to 5.9 GPM
• Temperature Range: 80°F – 140°F
• Requires: 240V, 3 x 40-amp breakers
• Compact design to save space

Best for: Large households needing high hot water demand.

GE Appliances 18 Gallon V…

The GE Appliances 18 Gallon Electric Water Heater is designed for flexibility and compact installation. This model is ideal for small homes, condos, or apartments where space is at a premium. With its 18-gallon tank, it can provide sufficient hot water for daily needs, making it a good choice for single occupants or small families.

What makes this unit particularly appealing is its ease of installation. It connects directly to existing plumbing and uses standard 120-volt outlets, making it a suitable option for areas without substantial electrical modifications. The adjustable thermostat allows for easy temperature settings, catering to individual preferences.

However, while it’s efficient for small households, its capacity may not be sufficient for larger families with higher hot water demands. Users should assess their needs carefully to avoid running out of hot water during peak usage times.

• Tank Capacity: 18 gallons
• Power: 120V
• Ideal for: Small spaces
• Installation: Easy, plug and play
• Adjustable thermostat for temperature control

Best for: Small households needing flexible installation.

110V Tankless Water Heate…

The 110V Tankless Water Heater offers a compact solution for those in need of instant hot water in small spaces. With a power rating of 3000 watts, this unit is particularly suited for under-sink installation in kitchens or bathrooms, where immediate access to hot water is crucial.

This model’s instant heating capability eliminates the wait for hot water, which is a significant advantage. It can increase water temperatures by up to 82°F in seconds. The compact design and wall-mounted installation free up valuable floor space, making it ideal for apartments or RVs.

However, it is essential to note that this heater is not suitable for showers, as the flow rate does not meet typical shower demands (which usually require at least 1.8 GPM). This limitation may restrict its applications in homes with higher hot water needs.

• Power Rating: 3000W
• Temperature Increase: 82°F (0.3GPM) – 131°F (0.5GPM)
• Design: Compact, wall-mounted
• Safety Features: Overheating protection, IPX4 waterproof
• Easy installation with standard connections

Best for: Small spaces needing instant hot water.

18kW Tankless Water Heate…

The NOVIEEX 18kW Tankless Water Heater is engineered for medium-sized homes, providing a maximum flow rate of 4.9 GPM. This model is suitable for situations where multiple fixtures require hot water simultaneously, like in busy households with multiple bathrooms.

This unit excels in energy efficiency, boasting a 99.8% thermal efficiency rating. It heats water on demand, which reduces energy bills significantly compared to traditional systems. The internal smart heating system ensures a constant temperature, adjusting automatically to incoming water temperatures, which enhances user comfort.

One consideration is the electrical requirements; it requires two 40-amp double-pole circuit breakers and a 240V power source. Homeowners must ensure that their electrical system can support this setup to avoid complications during installation.

• Power: 18kW
• Flow Rate: 4.9 GPM
• Temperature Range: 77°F – 140°F
• Efficiency: 99.8% thermal efficiency
• Compact design for space-saving

Best for: Medium households needing simultaneous hot water.

Rheem 11kW Multi Fixture…

The Rheem 11kW Multi Fixture Tankless Water Heater is a reliable choice for homes with moderate hot water needs. It offers a flow rate of up to 2.68 GPM, making it suitable for several simultaneous uses like showers and dishwashing in smaller households.

What sets this model apart is its compact size, which allows for installation in tight spaces. Its digital thermostatic control lets users adjust the temperature easily, ensuring comfort and safety for various applications. This unit is designed with multiple fixture applications in mind, making it versatile.

However, while it’s efficient, the flow rate may not be sufficient for larger families with high simultaneous demands. Users should assess their maximum hot water needs to ensure this model fits their requirements.

• Power: 11kW
• Flow Rate: 2.68 GPM
• Temperature Range: 80°F – 140°F
• Compact and space-saving design
• Requires 240V power supply

Best for: Smaller households needing reliable hot water.

How We Chose These Products

We evaluated these electric hot water heaters based on performance, energy efficiency, installation requirements, and user feedback. Real-world testing and customer reviews were essential in determining how each model performs under typical household conditions.

Additionally, we considered the range of applications these heaters support, ensuring that each product meets the diverse needs of different households. Our aim was to highlight options that deliver reliability, efficiency, and ease of use.

Buying Guide: What Really Matters

When shopping for an electric hot water heater, consider the size of your household and your hot water usage patterns. A larger family may require a higher flow rate and capacity, while smaller homes might benefit from compact, tankless options.

Installation requirements are also crucial. Ensure that your home’s electrical system can support the heater you choose, as improper installation can lead to inefficiencies or safety hazards. Look for models with adjustable thermostats for temperature control, enhancing comfort and safety.

Our Top Recommendation

The Rheem RTEX-24 stands out as the best option for those needing a high-capacity, on-demand hot water solution. For smaller households or space-restricted areas, the GE Appliances 18 Gallon Water Heater is a strong runner-up. Each product listed offers unique features to cater to different needs and budgets.

Frequently Asked Questions

What is the lifespan of an electric hot water heater?
On average, electric hot water heaters can last between 10 to 15 years with proper maintenance. Regular flushing and checking for corrosion can extend their lifespan.

How do I determine the right size for my household?
Consider the number of fixtures that will use hot water simultaneously. A flow rate between 3 to 5 GPM is typically adequate for moderate households, while larger families may need higher capacities.

Can I install an electric hot water heater myself?
While some models are designed for easy installation, it’s recommended to hire a licensed electrician to ensure compliance with local codes and safety standards.

Are electric hot water heaters energy-efficient?
Yes, especially tankless models. They heat water on demand, which reduces energy waste. Look for units with high thermal efficiency ratings for the best energy savings.

What maintenance do electric hot water heaters require?
Regular maintenance includes flushing the tank to remove sediment buildup and checking the anode rod. This helps maintain efficiency and prolongs the life of the heater.

For more information on specific models, consider reading about the best electric hot water heater for hard water or the best electric hot water heater for tea.