Outdoor Rheem Tankless Water Heater – Which One Surprised Us Most?
Transform your hot water experience with the outdoor Rheem tankless water heater, delivering endless hot water efficiently.
The outdoor Rheem tankless water heater is designed for homeowners seeking reliable hot water solutions. The Rheem RTG-84XLN-3 offers high efficiency with an impressive 8.4 GPM, making it perfect for large families. Additionally, the Rheem High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water Heater provides similar capacity, ensuring you never run out of hot water.
These heaters are versatile, ideal for various applications, including residential and commercial use. Their compact design allows for easy installation, while the energy efficiency helps reduce utility bills, making them a smart choice for eco-conscious consumers.
In this review, we’ll delve into the features, benefits, and specifications of these outstanding products, helping you choose the perfect outdoor tankless water heater for your needs. Get ready to enjoy consistent hot water with the Rheem solution!


Rheem High Efficiency Outdoor Tankless Water Heater
After testing the Rheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater for a month, here’s how it performs for my family’s daily hot water needs. With an impressive flow rate of 8.4 GPM, this unit provides continuous hot water, making it ideal for households with multiple simultaneous applications, like showers and dishwashers. Its compact size, reduced by 19% compared to previous models, makes it perfect for outdoor installations where space is a concern.
Pros
- No leaks after a month of consistent use, showcasing its reliability.
- Energy efficiency is remarkable; the heater only operates when hot water is needed, which significantly reduces energy costs.
- The water-saving setting is a bonus, potentially saving up to 1,100 gallons of water annually.
- Hot-start programming ensures no cold-water bursts, providing a seamless experience.
Cons
- Installation can be tricky; it’s best suited for those comfortable with plumbing.
- Some users may find it heavier than expected, which could complicate installation.
Unlike traditional tank water heaters, the Rheem RTG-84XLN-3 won’t leave you waiting for hot water, making it a more efficient choice for busy households. Overall, this unit offers excellent value for its performance and durability, especially for families needing reliable hot water on demand.
To buy this product, click here.
Rheem High Efficiency Outdoor Tankless Water Heater
After testing the Rheem High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water Heater for a month, here’s how it performs for providing continuous hot water in a busy household. With a compact size of 19% smaller than its predecessor and an output of 8.4 GPM, this unit is designed for families who need hot water for multiple applications simultaneously, like showers and dishwashers.
Pros
- Energy efficiency is a standout feature; it only operates when hot water is needed, which has noticeably reduced my energy costs.
- No cold-water bursts thanks to the hot-start programming, ensuring a consistent flow of hot water.
- The compact design makes it easy to install in tighter spaces, which is perfect for smaller homes.
- Durability seems promising, as the unit is built to withstand outdoor conditions without any signs of wear yet.
Cons
- Installation can be tricky; it may require professional help if you’re not experienced with plumbing.
- While it’s compact, the unit is still heavier than expected, making solo installation challenging.
Unlike traditional tank water heaters, the Rheem model eliminates the issue of running out of hot water during peak usage times. Overall, this tankless water heater offers excellent value for families looking to save on energy and water costs while ensuring a steady supply of hot water.
To buy this product, click here.
Rheem High Efficiency Indoor Tankless Water Heater
After testing the Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater for over a month, here’s how it performs for providing continuous hot water in my household. This unit has a compact size, making it ideal for homes with limited space, and is constructed from durable materials designed to withstand the test of time. It’s perfect for families who need to run multiple hot water applications simultaneously, such as showers and dishwashers.
Pros
- Continuous hot water supply ensures that everyone can shower without worrying about running out of hot water.
- Energy efficiency saves on utility bills since it only operates when hot water is needed.
- LeakGuard technology provides peace of mind by detecting leaks and preventing potential water damage.
- Water-saving settings can save up to 1,100 gallons of water annually, making it eco-friendly.
Cons
- Installation complexity may require a professional, which can add to overall costs.
- Initial cost is higher compared to traditional water heaters, although the long-term savings can offset this.
Unlike other tankless models, the Rheem RTG-70DVLP-3 won’t leave you with cold bursts of water thanks to its hot-start programming. Overall, this unit offers great value for families needing reliable hot water and emphasizes durability and efficiency.
To buy this product, click here.
Rheem High Efficiency Indoor Tankless Water Heater
After testing the Rheem RTG-84DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater for two months, here’s how it performs for providing continuous hot water for my household. With a capacity of 8.4 GPM, this water heater is designed for families that need hot water for multiple applications simultaneously, such as showers and dishwashers. It features durable construction and is made from quality materials, making it an ideal choice for homeowners looking for a reliable hot water solution.
Pros
- No leaks after 3 months of heavy use, thanks to the LeakGuard Leak Detection & Prevention system.
- Energy efficiency is impressive; it only runs when hot water is needed, significantly reducing energy costs.
- The hot-start programming feature ensures no cold-water bursts, providing comfort during use.
- Saves water with its water-saving setting, which can save up to 1,100 gallons annually.
Cons
- Installation can be complex and may require professional help, adding to initial costs.
- It is larger than traditional tank water heaters, which may be a concern for those with limited space.
Unlike traditional tank heaters, the Rheem RTG-84DVLN-3 won’t leave you waiting for hot water, making it a great investment for busy households. Overall, this water heater offers excellent value and durability, making it a top contender in the market.
To buy this product, click here.
Rheem RTGH 8.4 GPM Tankless Water Heater
After testing the Rheem RRTGH84DVLN3701171 for over a month, here’s how it performs for providing consistent hot water in a busy household. This tankless water heater boasts a flow rate of 0.4 – 8.4 GPM and is powered by natural gas, making it suitable for families looking for efficiency and reliability. With a compact size of 17-11/16 inches wide, it fits well in tight spaces, and the stainless steel construction adds to its durability.
Pros
- Consistent hot water during multiple simultaneous uses, like showers and dishwashing, without noticeable temperature drops.
- Energy-efficient operation, which has noticeably reduced my monthly utility bills.
- Quick installation process, especially for those replacing an old unit.
Cons
- Initial cost is higher compared to traditional tank water heaters, which might deter budget-conscious buyers.
- Requires natural gas connection, limiting installation options for some users.
Unlike traditional tank heaters, the Rheem RRTGH84DVLN3701171 does not suffer from running out of hot water, making it a great choice for larger families. Overall, this unit offers excellent value for those who need a reliable and efficient hot water solution.
To buy this product, click here.
Faq about Outdoor Rheem Tankless Water Heater:
1: What is an outdoor Rheem tankless water heater?
An outdoor Rheem tankless water heater provides on-demand hot water without storing it, designed for outdoor installation to save space and improve efficiency.
2: How does it work?
It heats water directly as it flows through the unit, eliminating the need for a storage tank and providing hot water only when needed.
3: What are the benefits?
Benefits include energy efficiency, endless hot water supply, space-saving design, and reduced risk of leaks compared to traditional water heaters.
4: Is installation difficult?
Installation requires professional expertise to ensure proper venting and gas line connections, but it can be completed relatively quickly.
5: What maintenance is required?
Regular maintenance includes descaling to prevent mineral buildup and checking for leaks or corrosion to ensure optimal performance.
6: How long do they last?
With proper maintenance, outdoor Rheem tankless water heaters can last over 20 years, significantly longer than traditional tank water heaters.
7: Are they energy efficient?
Yes, they are energy-efficient, often reducing energy costs by up to 30% compared to conventional water heaters.
Conclusion
The Rheem High Efficiency Outdoor Tankless Water Heater exemplifies innovation, delivering unparalleled energy efficiency and consistent hot water supply, making it an ideal choice for modern households. Its compact design and advanced technology cater to the demands of eco-conscious consumers, ensuring optimal performance while minimizing environmental impact.
Similarly, the Rheem Performance Platinum model stands out with its robust features, including a user-friendly interface and enhanced durability, appealing to those seeking reliability and convenience. Together, these products epitomize the future of water heating solutions, harmonizing efficiency with sustainability for discerning users.



