The 7 Cheapest 40-Gallon Electric Water Heaters in 2024

Which types of water heater are you looking for? It basically depends on the size of your household. If you have a small to medium household, you can go for the cheapest 40-gallon electric water heater. 

Thinking about which one will be the best? Well, this article will review the 7 cheapest 40-gallon electric water heaters which will assist you to choose your preferred one. 

So, let’s jump into the backbone of the article to explore your desired one. 


Rheem Gas Water Heater, 40-Gallon

Bradford White 40 Gallon Water Heater


7 Cheapest 40-Gallon Electric Water Heaters to Save Your Cost 

Now, you can explore the details of the 7 cheapest 40-gallon electric water heaters including features, specifications, pros, and cons as well as easily observe which one will be the best for what reason. 

Products Best For Pricing Details 
Bradford White 40 Gallon Water HeaterSmall to Medium HouseholdsBUY NOW 
Rheem Gas Water Heater, 40-GallonSmall Households BUY NOW
A.O. Smith ProMax Electric Water Heater, 40 gal2 to 3 PeopleBUY NOW
Reliance 40 Gallon Electric Water HeaterMobile Homes BUY NOW
Bosch Thermotechnology 40-Gallon Water HeaterTall, Shallow Closets or, Narrow SpaceBUY NOW
Thermomate Tankless Water Heater Kitchen, Garage, Bathroom & Office BUY NOW
GE APPLIANCES Tankless Water Heater Small Spaces & RV BUY NOW

1. Bradford White 40 Gallon Water Heater

Bradford White 40 Gallon Water Heater
Bradford White 40 Gallon Water Heater

The Bradford White 40 Gallon water heater is a great option if you’re looking for a water heater for small to medium households. I believe it’s absolutely worth your time because it has a wide range of features at a fair price.

A tank-style water heater for hard water that runs on natural gas is the Bradford White 40 Gallon water heater. Despite having a 40-gallon physical holding tank, this device can deliver 76 gallons of hot water in the first hour, which is amazing. 

A small to medium household would benefit greatly from a heater of this size.


  • Brand: Bradford White
  • Capacity: 40 Gallons
  • Power Source: Wind-Powered
  • Item Dimensions (LxWxH): 20 x 20 x 60.5 inches
  • Color: White
  • Material: Metal, Copper

Key Features

  • Bradford White ICON System: Intelligent gas control system with built-in piezo igniter and tested millivolt powered technology. The gas valve and microprocessor are operated by a typical, off-the-shelf thermopile, which transforms heat energy from the pilot flame into electrical energy. 
  • Advanced Temperature Control System: A microprocessor continuously monitors and regulates burner activity to keep water temperatures correct and consistent.
  • Intelligent Diagnostics: During startup, a unique green LED light alerts the installer and displays 10 different diagnostic codes to help with troubleshooting.
  • Pilot On Indication: A green LED that flashes indicates that the pilot is on.
  • The flame arrestor is made using advanced ScreenLok Technology to stop the ignition of combustible vapor outside of the water heater.
  • Resettable Thermal Switch: This tested and dependable bimetallic switch stops the burner and pilot from operating if there is a continuing burn of flammable vapor inside the combustion chamber or if the airflow is impeded. 
  • Sight Window: This provides a look into the combustion chamber so you can see how the burner and pilot are working.
  • The sediment build-up in the tank is prevented by the factory-installed Hydrojet Total Performance System—cold water inflow sediment-reducing mechanism.  It helps to increase hot water delivery throughout the first hour while reducing tank temperature buildup.


  • Easy to maintain
  • No need for regular basis cleaning 
  • No need for external electricity
  • When disconnecting the gas valve, no need to drain the tank
  • Enhance performance  


  • Needs more space for enough combustion air
  • Sometimes there may be leakage
  • The pilot light may be going out


2. Rheem Gas Water Heater, 40-Gallon

Rheem Gas Water Heater, 40-Gallon
Rheem Gas Water Heater, 40-Gallon

Choosing an ideal water heater might be challenging. There are many choices and alternatives available for both residential and commercial uses if you’ve never shopped for a water heater before.

Rheem 40-Gallon Gas Water Heater has almost a century of experience in the water heater industry, making it one of the market leaders in sales.

In addition to leading the world and developing new technology, Rheem 40-Gallon Gas Water Heater provides excellent customer service and solid guarantees.


  • Brand: Rheem
  • Capacity: 40 Gallons
  • Power Source: Wind-Powered
  • Item Dimensions (LxWxH): 20 x 20 x 50 inches
  • Color: Gray
  • Voltage: 240 Volts

Key Features

  • Low Emissions: It has an eco-friendly burner, a low Knox design, and meets 40 ng/J Knox requirements
  • Rheum’s proprietary R-Tech (registered) anode rod offers durable tank defense.
  • The unique EverKleen technology combats silt buildup.
  • High-flow brass drain valve that complies with lead regulations
  • Guardian System & Sensor: Exclusive air/fuel shut-off system
  • Performance: FHR: 50 to 90 gallons for natural gas, Recovery: 30.3 to 50.5 gallons at a 90-degree rise, depending on the model.


  • Maintenance free 
  • Enhanced-flow brass drain valve
  • Easy to light 
  • No matched required 


  • Expensive 
  • Increased size 


3. A.O. Smith ProMax Electric Water Heater, 40 gal

A.O. Smith ProMax Electric Water Heater, 40 gal
A.O. Smith ProMax Electric Water Heater, 40 gal

When you want to maximize your hot water output, the A.O. Smith 40-Gallon Electric Water Heater is a trusted option. It is built with environmentally friendly insulation to minimize standby heat loss.

Moreover, the ENS-40 delivers a first-hour rating of 55 gallons at a uniform energy factor of 0.92 with a 40-gallon (nominal) tank delivering 4,500 watts. 

It also comes with a 6-year limited tank guarantee that provides the Corgard sacrificial anode aids in preventing the tank from being corroded by water.


  • Brand: A. O. Smith
  • Capacity: 40 Gallons
  • Power Source: Battery Powered
  • Item Dimensions (LxWxH): 22 x 22 x 50 inches
  • Color: Gray
  • Wattage: 4500 watts
  • Material: ‎Aluminum, Stainless Steel, Brass
  • Style: Indoor Installation

Key Features

  • Permaglas glass coating prolongs tank life and prevents corrosion in steel tanks.
  • Made of durable PEX cross-linked polymer, the Dynaclean diffuser dip tube maximizes hot water production while reducing lime and sediment buildup.
  • Longer than standard steel anodes, CoreGard anode rode’s aluminum core shields the tank from corrosion.
  • Solid, tamper-proof brass drain valve
  • Complies with all current National Appliance Energy Conservation Act requirements (NAECA)


  • Long-lasting
  • Low-watt density copper heating elements
  • Certified T&P relief valve
  • Designed with Permaglas glass coating


  • Little bit difficult to maintain 
  • You may face constant breakdowns


4. Reliance 40 Gallon Electric Water Heater

Reliance 40 Gallon Electric Water Heater
Reliance 40 Gallon Electric Water Heater

Need any perfect water heating solution for your family? But don’t comprehend which one will be the best choice for you? 

Therefore, it’s critical to comprehend your hot water requirements. You must take into consideration your lifestyle, the size of your family, and the type and number of water-using appliances in your home.

Sounds challenging? Okay, just relax! You can go for Reliance 40 Gallon Electric Water Heater in this circumstance. It will provide an energy-efficient water heating solution as well as you can meet your family’s needs. 


  • Brand: Reliance
  • Capacity: 40 Gallons
  • Power Source: Battery Powered
  • Item Dimensions (LxWxH): 1 x 23.13 x 53.5 inches
  • Color: No Color
  • Voltage: 240 Volts
  • Material: Plastic
  • Item Weight: ‎109 Pounds
  • Style: Indoor Installation

Key Features

  • Integrated with copper-sheathed heating elements – dual 4500 watts
  • Designed with a PEX dip tube and the Glass-lined tank with an anode rod that protects against corrosion
  • Provides environment-friendly and non-CFC foam insulation solution 
  • Water connection size: 3/4
  • Equipped with factory-installed PEX polymer lined heat trap nipples
  • Family Size: 3; Factory-installed temperature & pressure (T&P) relief valve


  • 6-year limited tank & parts warranty
  • 1-year labor warranty
  • Max Wattage: 6,000 and Voltage: 240
  • Affordable price 


  • Installation cost 
  • Sometimes take longer to deliver hot water


5. Bosch Thermotechnology 40-Gallon Water Heater

Bosch Thermotechnology 40-Gallon Water Heater
Bosch Thermotechnology 40-Gallon Water Heater

Looking for an electric water heater that will fit into a tall, narrow space? If so, the Bosch Thermotechnology 40-Gallon Water Heater will be the ideal choice for tall, shallow closets or rooms. 

One of the top manufacturers of top-notch comfort and water heating systems is Bosch Thermotechnology. Electric whole-house and point-of-use water heaters, electric heat pump mini-split HVAC systems, and linked control thermostats are all products offered by the company.

By providing solutions that operate as integrated systems that improve quality of life in a highly effective and ecologically sustainable way. 

So, the Bosch Thermotechnology 40-Gallon Water Heater is dedicated to being simply smart through these exclusive features and functionalities.


  • Brand: Bosch Thermotechnology
  • Capacity: 40 Gallons
  • Power Source: Corded Electric
  • Item Dimensions (LxWxH): 18.25 x 18.25 x 61.6 inches
  • Color: Gray
  • Material: Plastic
  • Style: Tall

Key Features

  • Dimensions: 18.25″ W x 61.60″ H x 18.25″ L. APPLICATION Perfect size for a crawl area, access closet beneath the stairs, and maintenance closet. Ideal for jobs involving replacement.
  • Durability: For additional tank defense, two magnesium anode rods. Heat trap for dielectrics. 
  • Tank made of heavy gauge steel for longer, trouble-free service. Steel tank with a glass lining to help prevent corrosion.
  • Efficiency: HFO foam insulation increases energy efficiency and lowers fuel expenses. Energy is saved by using two heating components. The components are made of Incoloy for a durable unit
  • Convenience: Electric hot and cold water hookups fitted at the factory to enhance tank life. 
  • It has a plastic drain valve that is simple to use for maintenance. Heat traps that are pre-installed minimize heat loss. 
  • Relief valves for pressure and temperature are present. Surface-mounted thermostats that are fully automatic


  • Budget-friendly  
  • Electric heat pump mini-split HVAC systems
  • ultra-efficient and environmentally friendly
  • 10-year tank and parts limited warranty


  • Temperature controlling issue 
  • Limited output 


6. Thermomate Tankless Water Heater

Thermomate Tankless Water Heater
Thermomate Tankless Water Heater

Thermomate 40-Gallon Tankless Water Heater provides a new line of tankless electric water heaters that gives you a hot water system. 

Moreover, you can rely on, it every day, for years to come, whether you’re taking showers and baths, doing laundry and dishes, or shaving and hand cleaning, your home or business.

Energy-efficient, simple to install, small in size, unlimited hot water, reliable water flow, ideal for needs at the point of use, as a booster, or throughout the entire house. 

This 40-gallon electric water heater saves up to 60% more on your electric bill than you would with a conventional tank water heater. 

In contrast to a tank-type heater, an electric tankless heater only heats the water you actually use, preventing standby heat loss. 


  • Brand: thermomate
  • Power Source: Corded Electric
  • Item Dimensions (LxWxH): 17.12 x 13.12 x 3.12 inches
  • Material: ‎Alloy Steel
  • Style: Auto
  • Color: Gray
  • Wattage: 18000 watts
  • Voltage: 240 Volts

Key Features

  • This on-demand tankless electric water heater provides hot water in 3 seconds when you need it and for whatever length you need, eliminating the waiting period and ensuring that you never run out of hot water again. It requires 2 double-pole 40AMP breakers to achieve 240V.
  • Saving Space and Money: Self-modulating technology uses 99.8% efficiency to control the amount of energy needed to heat water only when you need it, saving you up to 60% compared to typical tank water heaters. 
  • Without a water tank, wall-mounted compact sizes are useful in any location, taking up less floor space and fitting into confined places.
  • Smart Operation – Automatically adjusts power consumption based on the water temperature and flow, ensuring maximum effectiveness, continuous temperature stability, and effective power use. 
  • From 80°F to 140°F, the digital temperature display allows adjustments in 1° increment. 
  • By separating the heating element from the water tube, scale, corrosion, and mineral buildup on the element are considerably reduced, resulting in superior performance and minimal maintenance.
  • Automatic heating shutoff when no water is detected, and excellent construction for leak protection
  • Confirm that this water heater is the appropriate size for your hot water requirements: Wire gauge 2 x 8AWG; required breaker 2 x Double-POLE 40AMP; unit size 17.12″ x 13.12″ x 3.12″; water connection 3/4″ NPT; maximum 76amp draw at 240V for 18kW.


  • Safety Protection & Simple Installation
  • ETL approved
  • Overheating prevention system


  • Technical issue 
  • Limited flow rate


7. GE APPLIANCES Point of Use Water Heater

GE APPLIANCES Tankless Water Heater
GE APPLIANCES Tankless Water Heater

Worried about hot water solutions for small spaces and RVs? Well, the GE APPLIANCES Point of Use Water Heater will ensure you a limitless hot water demand for any small spaces and RVs. 

By only using energy when hot water is being used, you can save money while conserving both energy and water. Installing this system allows you to have instantaneous, continuous hot water flow wherever it is required. 

Much less space is needed than with a tank-style water heater thanks to the space-saving and compact design. 

Therefore, you may easily and comfortably alter the temperature settings with the remote control and a simple design, which ranges from 86°F to 140°F.


  • Capacity: 2.9 Gallons
  • Power Source: Corded Electric
  • Item Dimensions (LxWxH): 2.4 x 8.5 x 14.2 inches
  • Color: Diamond Gray
  • Voltage: 240 Volts
  • Heat Output: 140 Degrees Fahrenheit
  • Style: Point of Use

Key Features

  • Tankless electric water heaters deliver fast, continuous water flow and offer unlimited hot water on demand.
  • Installs at the point of usage so that hot water is available when you need it.
  • Enough power to run two faucets and one shower at the same time in warm climates (performance up to 2.9 gallons per minute (GPM)* 
  • Intuitive design & remote Manage – Easily change temperature settings and control your unit from up to 30′ afar with the help of the touch screen interface.
  • Energy efficient – Only uses energy when hot water is being used, conserving both energy and water and saving you money.
  • In order to maximize energy efficiency and maintain a constant water temperature, the self-modulating technology makes use of inlet and output temperature sensors. 
  • By protecting the heating element from water and scale building, the scale reduction technology increases the lifespan of the appliance.


  • Integrated with self-modulating technology
  • Provides a consistent temperature
  • Point of use installation system 
  • Remote controlling system 


  • Slow heating time 
  • You may face water leakage


How Much Does a 40-Gallon Electric Water Heater Cost?

Two people can live comfortably in a home with a 40-gallon water heater, which ranges in price from $320 to $1,600. The national average cost range to install a 40-gallon electric water heater is $850 to $2,600. 

On the other hand, you can consider a 75-gallon water heater (average cost: $900–$3,000) or an 80-gallon (average cost: $1,000–$3,200) water heater for homes with five occupants or more.

For a 40-gallon electric tank water heater built in a public space, this project’s low cost is $620. A 40-gallon high-efficiency gas tank water heater that needs adjustments in a hard-to-reach region has a high cost of $3,200.

Average Price Range of the Best 40-Gallon Electric Water Heaters

Homes with three to four people and low to moderate hot water needs can get by with 40-gallon water heaters. Gas or propane may be used to power this size of the appliance. 

Moreover, the latter are more expensive up front but less expensive to operate over time because they come with various efficiencies. The location, whether it is prepared for installation, and tank insulation all have an effect on the project’s overall cost. 

The prices shown below are for 40-gallon electric water heaters that are completely installed and range in quality.

Basic Standard Best-Quality 
40-Gallon Water Heater Cost (Material Only)$350 – $600$700 – $1,100$1,200 – $1,700
40-Gallon Water Heater Installation Cost (Labor Only)$270 – $350$400 – $600$600 – $1,500
Total Costs (Material + Labor) $620 – $950$1,100 – $1,700$1,800 – $3,200

Did You Know? 

“Around $400-$600 is spent on water heating every year through household activities only, and it is the second largest expense in the average American home that takes almost 14% to 18% of utility bills.Source  

How Much Does It Cost to Replace a 40-Gallon Water Heater?

A 40-gallon tank heater will be adequate for your needs if your family has three to four members and low to moderate water demands. When you want to replace a 40-gallon electric water heater, you may need to spend around $1,400. 

Being as close to your family’s demands as possible may help you save money on water heating costs because tank-style heaters must keep water warm until it is utilized.

How Much is the Cheapest 40-Gallon Electric Water Heater?

A typical tank-style water heater would be the cheapest to install. This sort of 40-gallon water heater typically costs between $620 and $950, material and labor costs included. 


40-Gallon Electric Water Heater Vs 50-Gallon Water Heater

For people who live in tiny places or who install their water heater outside, a 40-gallon gas water heater is a great investment. You will want more gallons of hot water if you have a large household or use a lot of hot water at once.

An ordinary household of 2-4 people or a single individual can get by with a 40-gallon water heater. 

On the other hand, for those who require extra hot water to handle more important tasks, such as laundry and bathing, a 50-gallon gas water heater is ideal. A 40-gallon gas water heater is smaller and less powerful than a 50-gallon model. If your household is between 5 and 8, a 50-gallon water heater is the best option for you.

However, the 40-gallon water heater is the ideal choice for individuals on a tight budget. Most merchants carry this kind of water heater, which is often less expensive than its 50-gallon equivalent.

The 40-gallon type is ideal for smaller houses with a lower need for hot water because it often heats up to 20 gallons before reaching its full capacity.


Pick the Cheapest Energy-Efficient 40-Gallon Water Heater to Save Your Cost 

Since you need to spend a large amount of cost to maintain an electric water heater. You have to be conscious to choose a 40-gallon water heater for your home. Here, you have got a detailed review of the 7 cheapest 40-gallon electric water heaters. 

But still, if you have any confusion, you can check out this recommendation section. 

We always prioritize our reader’s satisfaction and comfort. That’s why we offer trendy and demandable products so that they can easily meet your needs. 

If you take a look at Google Trends, you can observe the demand and trends for the 40-gallon water heaters we reviewed.

Definitely, you’ve observed the demand and trends for 40-gallon water heaters and you’ve figured out which ones have been the most popular and in-demand over the past 12 months. 

According to that, we strongly recommend you the Rheem 40-Gallon Gas Water Heater which will ensure the best service and meet your needs. 

Rheem 40-Gallon Gas Water Heater




Picked your preferred one? Definitely, you have already picked it. If you’ve been purchasing a water heater, you’ve probably found that it can be difficult to find the ideal system for your house. 

However, this article makes your tasks easier by reviewing the 7 cheapest 40-gallon electric water heaters. So, now it need not be difficult to discover a dependable and consistent 40-gallon water heater that is affordable.

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