Struggling with inconsistent hot water? The Rheem 40 Gallon Gas Water Heater offers a reliable solution for your home.
This efficient water heater provides a steady supply of hot water, ensuring comfort for your family. With features like a powerful gas burner and a fast recovery rate, the Rheem 40 Gallon model simplifies daily routines. Its durable design and built-in safety features make it a standout choice for homeowners seeking reliability.
In our full review, we break down performance, durability, and more to help you choose the perfect water heater for your needs.


Rheem 40 Gallon Electric Water Heater
The Rheem 72-40-2 240V / 4500W 40 Gallon Electric Water Heater is designed to provide a reliable and efficient hot water solution for residential use. Ideal for medium to large households, this electric water heater ensures a steady supply of hot water for various needs, from showers to laundry. Its compact design, with a 40-gallon capacity, makes it suitable for homes with limited space while still delivering high performance.
Key specifications include a Rheemglas lined tank that enhances durability, R-Foam insulation for improved energy efficiency, and an anode rod that protects against corrosion. The automatic temperature control thermostat ensures that water is heated to the desired temperature, providing convenience and peace of mind.
The Rheem 40 Gallon Electric Water Heater solves the common problem of inconsistent hot water supply, especially during peak usage times. With its direct immersion heating element, it heats water quickly and efficiently, enhancing the user experience by minimizing wait times for hot water.
Pros
- Efficient heating with a quick recovery rate.
 - Durable construction with a corrosion-resistant tank.
 - Energy-efficient insulation to reduce electricity bills.
 - Automatic temperature control for user convenience.
 
Cons
- Installation may require professional assistance.
 - Higher initial cost compared to traditional water heaters.
 
In terms of performance, the Rheem 72-40-2 excels with its reliable heating capabilities and long-lasting materials. The standout features, such as the R-Foam insulation and the anode rod, significantly extend the life of the unit while reducing maintenance needs. This water heater is best suited for families or individuals who require a consistent and efficient hot water supply for daily activities.
Overall, the Rheem 72-40-2 240V / 4500W 40 Gallon Electric Water Heater stands out as a top choice for those seeking a durable, efficient, and user-friendly hot water solution. Its robust features and reliable performance make it an excellent investment for any household in need of dependable hot water.
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Rheem Gas Control Thermostat, Natural Gas
The Rheem AP14270G Gas Control Thermostat is designed to effectively control the flow of gas from the main supply line to the burner, ensuring optimal performance of your gas water heater. Ideal for homeowners with a Rheem 40-gallon gas water heater, this thermostat is vital for maintaining the desired water temperature and enhancing energy efficiency. Its dimensions of 12.7 x 7.5 x 6.6 inches and sleek gray color make it a practical and unobtrusive addition to your water heating system.
This thermostat addresses common issues such as fluctuating water temperatures and inefficient gas usage. By providing precise control over your water heater’s operation, it significantly improves the user experience, ensuring hot water is readily available when needed.
Pros
- Enhances energy efficiency by controlling gas flow accurately.
 - Durable construction ensures long-lasting performance.
 - Easy installation process, suitable for DIY enthusiasts.
 - OEM genuine factory authorized part guarantees compatibility.
 
Cons
- Limited to use with Rheem 40-gallon gas water heaters only.
 - Price may be higher compared to generic alternatives.
 
The Rheem AP14270G Gas Control Thermostat performs exceptionally well in regulating water temperatures, making it a reliable choice for maintaining consistent hot water supply. Its standout feature is the OEM certification, ensuring compatibility and reliability that generic models may lack. The ease of installation is a significant advantage, making it accessible for those who prefer to handle repairs themselves.
This thermostat is best suited for homeowners who prioritize energy efficiency and reliable hot water supply. While it comes with a higher price tag than some alternatives, the investment is justified by its durability and performance. Minor drawbacks include its specific compatibility, which may limit options for those with different water heater brands.
In summary, the Rheem AP14270G Gas Control Thermostat offers excellent value for homeowners seeking a dependable and efficient solution for their gas water heating needs.
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Rheem 50-Gallon Electric Water Heater
The Rheem PROE50 M2 RH95 50-Gallon Professional Classic Medium Residential Electric Water Heater is designed to provide an ample supply of hot water for households with 3-5 people or homes featuring 3 or more bathrooms. This electric water heater is particularly suited for families seeking a reliable and efficient solution to meet their daily hot water needs. With dimensions that allow it to fit comfortably into smaller spaces, it serves as an excellent replacement for older models.
Key specifications of the Rheem PROE50 include a capacity of 50 gallons, a sleek gray finish, and an automatic thermostat that maintains water temperature efficiently. The enhanced-flow brass drain valve ensures easy maintenance and long-term durability, while the anode rod provides exceptional tank protection, extending the life of the unit.
This water heater improves user experience by eliminating the frustration of running out of hot water during peak usage times. The automatic thermostat keeps the water at a consistent temperature, ensuring comfort and convenience for all household members.
Pros
- Reliable hot water supply for medium-sized households.
 - Compact design saves space compared to competitive models.
 - Durable anode rod enhances tank longevity.
 - Automatic thermostat ensures consistent water temperature.
 - Easy maintenance with enhanced-flow brass drain valve.
 
Cons
- Installation may require professional assistance, adding to overall cost.
 - Electric models may have higher operational costs compared to gas alternatives.
 
In terms of performance, the Rheem PROE50 excels in providing a steady flow of hot water, making it ideal for busy households. Its standout features, such as the InfoCue visible LED indicator, allow users to monitor the operational status easily. While it may not be the most budget-friendly option, its reliability and efficiency justify the investment for families needing consistent hot water access.
Overall, the Rheem PROE50 M2 RH95 is an excellent choice for medium to large households seeking a dependable electric water heater that combines efficiency with practicality. Its robust features and space-saving design make it a valuable addition to any home.
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Rheem 18kW Electric Tankless Water Heater
The Rheem 18kW 240V Tankless Electric Water Heater is designed to provide a continuous supply of hot water, ideal for homeowners seeking efficient and reliable water heating solutions. This model is especially suited for medium to large households, meeting the demands of multiple simultaneous hot water uses, such as showers, dishwashing, and laundry. With a flow rate of up to 4.4 gallons per minute (GPM), it ensures that your hot water needs are met without interruption.
Key specifications of the Rheem 18kW include a compact design that allows for easy installation, featuring bottom 3/4 inch NPT water connections. The unit measures a manageable size, making it suitable for various installation locations. Finished in a sleek gray color, it blends seamlessly with modern home aesthetics. Constructed with durable copper immersion two heating elements, it promises longevity and reliability.
This tankless water heater solves the common problem of running out of hot water during peak usage times, enhancing the user experience by providing a steady flow of hot water on demand. Its advanced self-modulation technology adjusts the power output based on hot water demand, ensuring energy efficiency and cost savings.
Pros
- Efficient hot water supply with a flow rate of up to 4.4 GPM.
 - Durable construction with copper heating elements for longevity.
 - Easy installation with straightforward connections.
 - Digital thermostatic control with LED display for precise temperature management.
 
Cons
- Requires a 240V electrical connection, which may not be available in all homes.
 - Initial price may be higher than traditional tank water heaters.
 
In terms of performance, the Rheem 18kW stands out for its ability to provide consistent hot water while being energy efficient. It is best suited for families or households that frequently use multiple hot water sources simultaneously. While the installation is simple, potential users should consider the electrical requirements and ensure they have the appropriate setup.
Overall, the Rheem 18kW 240V Tankless Electric Water Heater offers significant value for those in need of reliable hot water solutions. Its durability, efficiency, and ease of use make it an excellent choice for medium to large households looking to enhance their hot water experience.
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Rheem Water Heater Burner Assembly Kit
The Rheem AM39922-1 Water Heater Burner Assembly Kit is designed to enhance the efficiency of your Rheem RG40S-40 Natural Gas water heater. Ideal for homeowners seeking reliable hot water solutions, this burner assembly kit is specifically tailored for 40-gallon gas water heaters. Its robust construction ensures long-lasting performance, making it a valuable addition to your home maintenance toolkit.
This burner assembly kit features durable materials that withstand high temperatures and pressure, contributing to a reliable heating experience. With a compact design, it easily fits into the existing water heater setup, ensuring a seamless installation process. The kit’s specifications include a lightweight design that simplifies handling and installation, while its compatibility with Rheem models guarantees optimal performance.
By replacing worn-out or malfunctioning burner components, the Rheem AM39922-1 significantly improves water heating efficiency, reducing energy costs and downtime. This product is particularly beneficial for families or individuals who rely on consistent hot water for daily activities such as bathing, cooking, and cleaning.
Pros
- Enhances heating efficiency, reducing energy costs.
 - Durable construction for long-lasting performance.
 - Easy installation process, saving time and effort.
 - Compatible with Rheem RG40S-40 models, ensuring a perfect fit.
 
Cons
- Limited to specific Rheem models, not universally compatible.
 - Price may be higher compared to generic alternatives.
 
Performance-wise, the Rheem AM39922-1 excels in restoring the functionality of gas water heaters. Its standout feature is the precision engineering that maximizes heat output while minimizing gas consumption. Users appreciate its reliability, especially in households where hot water demand is high. However, some users may find the price point slightly steep compared to generic options, but the quality and performance justify the investment.
This burner assembly kit is best suited for homeowners with Rheem gas water heaters who prioritize efficiency and reliability. While it may not be the cheapest option available, the benefits it offers in terms of performance and durability make it a worthwhile purchase for those seeking dependable hot water solutions.
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Faq about Rheem 40 Gallon Gas Water Heater:
1:What is the capacity of the Rheem 40 Gallon Gas Water Heater?
The Rheem 40 Gallon Gas Water Heater has a capacity of 40 gallons, suitable for medium-sized households.
2:How efficient is the Rheem 40 Gallon Gas Water Heater?
This water heater typically has an energy factor of around 0.62 to 0.67, ensuring efficient energy use.
3:What is the warranty on the Rheem 40 Gallon Gas Water Heater?
The Rheem 40 Gallon Gas Water Heater generally comes with a limited warranty of 6 years for the tank and parts.
4:What type of gas does the Rheem 40 Gallon Gas Water Heater use?
It uses natural gas or propane, depending on the model and installation.
5:What are the dimensions of the Rheem 40 Gallon Gas Water Heater?
Its dimensions are approximately 60 inches in height and 20 inches in diameter, making it compact for various spaces.
6:How long does it take to heat water?
This model can heat water in about 30 to 40 minutes, depending on the initial temperature and settings.
7:Can I install the Rheem 40 Gallon Gas Water Heater myself?
While DIY installation is possible, it is recommended to hire a professional for safety and compliance with local codes.
Conclusion
Both the Rheem 40 Gallon Gas Water Heater and the Rheem 40 Gallon Electric Water Heater exemplify superior engineering, delivering efficient performance tailored to diverse household needs. The gas model offers rapid heating and cost-effective operation, making it ideal for larger families, while the electric variant provides a reliable and environmentally friendly alternative, ensuring consistent hot water supply.
Complementing these stellar products, the Rheem Gas Control Thermostat enhances user experience by facilitating precise temperature regulation and optimal energy consumption. Collectively, these offerings underscore Rheem’s commitment to innovation and excellence in water heating solutions, catering to a broad spectrum of consumer preferences.





