The Rheem Marathon Electric Water Heater 85 Gallon stands out for its durability and energy efficiency, making it a top choice for large families and busy households.
From high-demand usage to energy-saving modes, this water heater adapts to your needs effortlessly, ensuring you always have hot water.
We detail pros, cons, and hidden perks ahead.



Rheem RTEX-24 Electric Tankless Water Heater
After testing the Rheem RTEX-24 24kW Electric Tankless Water Heater for a month, here’s how it performs for providing consistent hot water in my home. With its compact size and sleek gray design, the unit fits well in smaller spaces, making it ideal for apartments or homes with limited installation options. The self-modulating power control ensures that the heater adjusts energy usage based on demand, which is a significant advantage for energy-conscious users.
Pros
- No leaks after a month of use, showcasing its reliability and durability.
- Quick heating capabilities, delivering up to 5.9 GPM, perfect for simultaneous use in multiple bathrooms.
- Easy installation with standard 3/4″ NPT connections, making it user-friendly for DIY enthusiasts.
Cons
- Requires a significant electrical setup, which might necessitate professional installation for some users.
- Temperature fluctuations can occur if multiple outlets are used simultaneously, unlike traditional tank heaters.
Unlike the Rheem MR85245 Marathon Electric Water Heater, which can be bulky and less efficient in energy use, the RTEX-24 offers a compact design without sacrificing performance. Overall, this tankless water heater provides excellent value for anyone needing reliable hot water on demand while being mindful of space and energy consumption.
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Rheem 18kW Tankless Electric Water Heater
After testing the Rheem 18kW 240V Tankless Electric Water Heater for two months, here’s how it performs for providing consistent hot water in my home. This unit is compact, measuring approximately 14 x 18 x 4 inches, and is made from durable copper with two heating elements, making it suitable for families or small businesses that require reliable hot water on demand.
Pros
- No leaks after two months of continuous use, showcasing its impressive durability.
- Fast heating capability, with a flow rate of up to 4.4 GPM, ensuring I never run out of hot water during showers.
- The external digital thermostatic control with LED display allows for precise temperature adjustments, which I appreciate.
Cons
- Installation complexity might be a drawback for some; I recommend hiring a professional if you’re not handy.
- Initial cost is higher compared to traditional water heaters, but I believe it offers long-term value due to energy savings.
Unlike the Marathon Electric Water Heater, which can take up significant space, the Rheem is compact and easy to fit in tight spaces. Overall, the Rheem 18kW Tankless Water Heater stands out with its advanced self-modulation feature, ensuring it adjusts power to meet hot water demand efficiently. I highly recommend it for anyone seeking a dependable and efficient hot water solution.
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Rheem Water Heater Element Replacement 4500W
After testing the Water Heater Element Replacement for Rheem Marathon for two weeks, here’s how it performs for providing efficient hot water. This replacement part, designed specifically for models like AWS050AW1245S and AWS085AW1245S, features a 1-7/8 hexagonal head size and a 1.5-inch thread size. Made from high-quality titanium alloy, it targets homeowners looking for reliable and long-lasting water heater components.
Pros
- Fast heating capabilities ensured I had a continuous hot water supply, even during peak usage times.
- Corrosion resistance has been impressive; I’ve noticed no signs of wear or degradation after weeks of use.
- The durability of the titanium material gives me confidence that this element will last longer than standard alternatives.
Cons
- Installation can be tricky for those unfamiliar with water heater repairs, requiring some mechanical skill.
- I found it slightly heavier than other elements, which could be a consideration for portability during replacement.
Unlike the standard copper elements, this titanium replacement won’t corrode as quickly, ensuring better longevity and value over time. Overall, the Water Heater Element Replacement for Rheem Marathon stands out for its performance and durability, making it a solid choice for homeowners seeking reliable hot water solutions.
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Rheem 11kW Tankless Electric Water Heater
After testing the Rheem 11kW 240V Tankless Electric Water Heater for over a month, here’s how it performs for providing consistent hot water in my home. With a compact size and sleek design, this unit is perfect for homeowners looking to save space while enjoying the benefits of on-demand hot water. The self-modulating power control ensures efficiency, making it suitable for families who need a reliable hot water source without the bulk of traditional tanks.
Pros
- No leaks after extensive use, which gives me confidence in its durability.
- Fast heating capability, providing hot water at a flow rate of up to 2.68 GPM, perfect for multiple simultaneous uses.
- Energy-efficient operation, which has noticeably reduced my utility bills.
Cons
- Installation can be complex, requiring professional help for optimal performance.
- Limited flow rate compared to larger traditional water heaters, which may not suffice for very large households.
Unlike the Rheem MR85245 Marathon Electric Water Heater, which has a larger capacity but takes up significant space, the Rheem 11kW is ideal for those prioritizing value and efficiency without sacrificing performance. Overall, I appreciate the compact design and reliable hot water delivery, making it a solid choice for my family’s needs.
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Dgqtrx 4500W Titanium Water Heater Element
After testing the SP610160 4500W Titanium Water Heater Element for a month, here’s how it performs for home water heating needs. This heating element is compatible with Rheem and Marathon water heaters and features a robust copper construction that ensures effective thermal conductivity. With a hex head size of 1-7/8 inches and a thread size of 1.5 inches, it’s designed for easy installation, making it ideal for DIY enthusiasts and homeowners looking to replace their old elements.
Pros
- No leaks after a month of continuous use, thanks to the leak-proof O-ring gasket and screws.
Cons
- Installation can be tricky for those unfamiliar with plumbing, despite the easy-to-follow instructions.
Compared to similar products, like the standard heating elements from competitors, the SP610160 stands out because it won’t corrode easily, ensuring durability even under high-temperature conditions. This feature significantly reduces maintenance costs and the frequency of replacements. The high-quality copper material not only provides faster heating but also adds to the overall value of the product.
Overall, the SP610160 heating element is a reliable choice for anyone needing a replacement for their water heater, delivering both performance and longevity.
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Faq about best Rheem MR85245 Marathon Electric Water Heater 85 Gallon:
1:What is the capacity of the Rheem MR85245 Marathon Electric Water Heater?
The Rheem MR85245 has an 85-gallon capacity, making it suitable for large households and commercial use.
2:What is the energy efficiency rating of this water heater?
This model features a high energy efficiency rating, helping to reduce electricity costs while providing reliable hot water.
3:What is the warranty on the Rheem MR85245?
The Rheem MR85245 comes with a limited lifetime warranty on the tank and a 6-year warranty on parts, ensuring long-term reliability.
4:How does the Marathon electric water heater compare to traditional models?
The Marathon electric water heater offers superior insulation, a lightweight design, and a non-metallic tank that resists corrosion compared to traditional models.
5:Can the Rheem MR85245 be installed indoors?
Yes, the Rheem MR85245 is designed for indoor installation, making it ideal for basements, garages, or utility rooms.
6:What maintenance is required for this water heater?
Regular maintenance includes checking the anode rod, flushing the tank annually, and ensuring the heating elements are functioning properly.
Conclusion
The Rheem MR85245 Marathon Electric Water Heater exemplifies durability and efficiency, catering to large households with its impressive 85-gallon capacity. Its superior insulation technology ensures minimal heat loss, making it a paragon of energy conservation.
Conversely, the Rheem RTEX-24 Electric Tankless Water Heater showcases instantaneous hot water delivery, ideal for smaller spaces. Its compact design and advanced heating elements facilitate optimal performance, rendering it a prudent choice for energy-conscious consumers.