The Rheem Marathon Electric Water Heater is designed for efficiency and longevity, offering an impressive 85-gallon capacity. Its energy-saving features and durable construction make it a top choice for homeowners seeking reliable hot water. With a built-in anode rod and automatic thermostat, this heater ensures optimal performance and minimal maintenance.
This versatile water heater is perfect for large households or businesses, providing consistent hot water for various uses, including showers, laundry, and dishwashing. Its enhanced-flow brass drain valve allows for easy maintenance, setting it apart from traditional models.
In this full review, you will learn about the unique benefits of the Rheem Marathon Electric Water Heater, including its energy efficiency and durability. Get ready to transform your hot water experience!



Rheem 18kW Tankless Electric Water Heater
Rheem 18kW 240V Tankless Electric Water Heater is designed to provide instant hot water on demand, ideal for homeowners seeking energy efficiency and convenience. Its compact size of 18kW ensures that it fits seamlessly into various settings, while the sleek gray color complements any modern decor. Made from durable copper with advanced self-modulation technology, this unit adjusts power to meet your hot water needs efficiently.
This tankless water heater resolves the common issue of running out of hot water during peak usage times, enhancing the overall user experience by delivering a flow rate of up to 4.4 GPM. It is perfect for families or individuals who require consistent hot water for showers, washing dishes, or laundry.
Pros
- Energy-efficient operation reduces utility bills.
- Durable copper heating elements ensure longevity.
- Easy installation with bottom 3/4 inch NPT connections.
- Accurate temperature control with a digital display.
Cons
- May require professional installation for optimal performance.
- Higher upfront cost compared to traditional water heaters.
The Rheem 18kW Tankless Electric Water Heater stands out with its advanced technology and user-friendly features. It is best suited for medium to large households that prioritize efficiency and reliability. While it may have a steeper price point, the long-term savings and performance justify the investment. Overall, this product is ideal for those who want a dependable hot water solution without the limitations of a traditional tank system.
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Rheem RTEX-24 Electric Tankless Water Heater
The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is designed to provide on-demand hot water, making it ideal for homeowners seeking energy-efficient solutions. With a compact size of 18 x 14 x 3.625 inches and a sleek gray finish, this unit fits seamlessly into various spaces. Targeting families and individuals who require consistent hot water without the bulk of traditional tanks, it delivers a flow rate of up to 5.9 gallons per minute (GPM).
This electric water heater addresses the common issue of running out of hot water during peak usage times. Its self-modulating power control adjusts energy consumption based on demand, ensuring efficiency and cost savings.
Pros
- Consistent hot water supply with no waiting time.
- Energy-efficient design reduces utility bills.
- Compact size allows for flexible installation options.
- Durable construction ensures long-lasting performance.
- Easy-to-use ON/OFF dial control with a digital temperature display.
Cons
- Higher upfront cost compared to traditional water heaters.
- May require professional installation for optimal performance.
- Limited flow rate may not suffice for larger households with simultaneous demands.
The Rheem RTEX-24 excels in performance, providing reliable hot water for showers, dishwashing, and laundry simultaneously. Its standout feature is the adjustable digital temperature display, which allows users to set their desired temperature precisely. Best suited for small to medium households, it may not meet the needs of larger families during peak usage times. Overall, this electric tankless water heater is a valuable investment for those prioritizing efficiency and convenience.
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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 reliable hot water for households with 3-5 people or homes featuring 3 or more bathrooms. Its compact size of 50 gallons ensures it fits comfortably in tight spaces, making it an excellent choice for replacing older models. The heater is finished in a sleek gray color and constructed with durable materials to ensure longevity.
This water heater effectively solves the problem of insufficient hot water supply in busy households. With its automatic thermostat, it maintains the desired water temperature, enhancing user experience. The enhanced-flow brass drain valve simplifies maintenance, while the anode rod offers long-lasting tank protection against corrosion.
Pros
- Reliable hot water supply for medium-sized households.
- Compact design saves space compared to competitive models.
- Automatic thermostat ensures consistent water temperature.
- Durable construction with anode rod for extended tank life.
- Easy maintenance with enhanced-flow brass drain valve.
Cons
- Initial price may be higher than some alternatives.
- Installation may require professional assistance.
In real-world usability, the Rheem PROE50 M2 excels in delivering consistent hot water, making it ideal for families with high demands. Its visible LED indicator, InfoCue, adds to the convenience by providing essential operational information. Overall, this water heater is best suited for medium-sized households looking for a dependable and efficient hot water solution.
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Dgqtrx 4500W Titanium Water Heater Element
The SP610160 4500W Titanium Water Heater Element is designed to provide efficient heating for Rheem and Marathon water heaters, making it ideal for homeowners seeking reliable hot water solutions. With specifications including a 1-7/8 hex head size and 1.5-inch thread size, this heating element ensures easy installation and compatibility with models like CMR105245 and MR30245C.
This heating element addresses common problems such as slow heating and frequent replacements. Its high-quality copper construction offers superior thermal conductivity, allowing for faster heating and improved energy efficiency. Users can expect a long service life due to the corrosion-resistant properties of copper, making it a cost-effective choice for maintaining hot water supply.
Pros
- Easy installation with included leak-proof O-ring gasket and screws.
- High-quality copper construction ensures quick heat transfer.
- Durable and corrosion-resistant, reducing maintenance costs.
- Stable performance under high temperatures, minimizing replacement frequency.
Cons
- Limited to specific Rheem and Marathon models, which may restrict use.
- Initial price may be higher compared to generic alternatives.
Overall, the SP610160 4500W Titanium Water Heater Element stands out for its durability and efficiency, making it an excellent choice for homeowners with compatible water heaters. Its ease of installation and long-lasting performance cater to those who prioritize reliability and cost-effectiveness in their hot water systems.
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Rheem 11kW Tankless Electric Water Heater
Rheem 11kW 240V Tankless Electric Water Heater is designed to provide on-demand hot water, ideal for homeowners seeking energy-efficient solutions. With dimensions of 14.5 x 8.5 x 4.5 inches, this compact unit fits seamlessly into various spaces. Its sleek design in a neutral color ensures it blends well with any decor, while the durable materials promise longevity.
This water heater addresses the common problem of running out of hot water during showers or while doing laundry. With a flow rate of up to 2.68 GPM, it delivers consistent and continuous hot water, making it perfect for households with moderate hot water needs.
Pros
- Self-modulating power control enhances energy efficiency.
- Adjustable digital temperature display offers precise control.
- Compact size allows for easy installation in tight spaces.
- Durable construction ensures long-lasting performance.
Cons
- Initial installation cost may be higher compared to traditional heaters.
- May require electrical upgrades for optimal performance.
Performance-wise, the Rheem 11kW Tankless Water Heater excels in providing hot water quickly, making it suitable for families or individuals who prioritize convenience and efficiency. The standout feature of self-modulating technology adjusts the energy usage based on demand, ultimately saving on utility bills. However, potential buyers should consider the installation requirements, particularly the need for sufficient electrical capacity.
Overall, this water heater is an excellent choice for energy-conscious users who value reliability and efficiency in their hot water solutions.
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Faq about Best Rheem MR85245 Marathon Electric Water Heater 85 Gallon:
1:What is the capacity of the Rheem MR85245?
The Rheem MR85245 has an 85-gallon capacity, making it suitable for large households.
2:What is the energy source for this water heater?
This model is an electric water heater, designed for efficient heating using electricity.
3:How energy efficient is the Rheem MR85245?
It has a high energy efficiency rating, helping to reduce electricity bills while providing reliable hot water.
4:What is the warranty on the Rheem MR85245?
The Rheem MR85245 typically comes with a limited warranty of 6 years on the tank and 1 year on parts.
5:Can this water heater be installed indoors?
Yes, the Rheem MR85245 is designed for indoor installation, suitable for basements, garages, or utility rooms.
6:How long does it take to heat water?
Heating time varies, but it typically provides hot water within a few hours, depending on usage and initial water temperature.
7:Does it require special maintenance?
Regular maintenance includes flushing the tank annually to remove sediment buildup, ensuring optimal performance.
Conclusion
Both the Rheem MR85245 Marathon Electric Water Heater and the Rheem 18kW Tankless Electric Water Heater exemplify excellence in the realm of water heating solutions. The Marathon model, with its impressive 85-gallon capacity, ensures ample hot water availability while boasting superior insulation for energy efficiency. Meanwhile, the 18kW Tankless variant offers instantaneous heating, catering to modern demands for on-demand hot water without the constraints of traditional tanks.
Ultimately, these products reflect Rheem’s commitment to innovation and quality, providing consumers with reliable, efficient, and sustainable options tailored to diverse needs. Whether opting for the substantial tank capacity of the Marathon or the sleek, space-saving design of the tankless model, users are assured of exceptional performance and longevity.