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Enjoying the outdoors shouldn’t mean sacrificing the comforts of hot water. Whether for a backyard shower, a pool house, or even off-grid living, an outdoor tankless water heater offers a convenient and efficient solution.
However, with numerous options available, selecting the best outdoor tankless water heaters requires careful consideration. This review article aims to guide you through the key factors to consider when choosing the right unit for your needs.
We understand the importance of quality and value when making such a significant purchase. We’ll explore what to look for in the best outdoor tankless water heaters, helping you make an informed decision that balances performance, durability, and cost-effectiveness.
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IN THIS ARTICLE
Top 5 Outdoor Tankless Water Heaters Compared
Rinnai V53DeP Propane Tankless Water Heater
- Tankless design provides endless hot water flow.
- High-efficiency heating saves on energy costs.
- Wi-Fi capable for convenient remote control.
- Enhanced scale detection ensures long-term performance.
4.4/5
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Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater
- High 7 GPM flow rate for demanding needs
- Outdoor style with freeze protection for reliability
- Self-diagnostic program simplifies maintenance and use
- Efficient, with hot-start for instant hot water
4.3/5
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FOGATTI Natural Gas Tankless Water Heater – Outdoor Installation Up to 8.1 GPM
- Multi-point hot water supply for whole home.
- Long warranty and CSA certified for safety.
- Easy installation and energy efficient operation.
- High flow rate and temperature for outdoor use.
4.4/5
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Propane Tankless Water Heater Outdoor
- High heat output for fast water heating.
- Multiple safety features provide user protection.
- Good flow rate for various household needs.
- Includes remote control for easy operation.
4.1/5
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Natural Gas Tankless Water Heater
- Compact size fits in tight spaces.
- Lightweight at 32.7 pounds, easy install.
- Simple, white color complements any decor.
- Includes all essential water heater components.
4.4/5
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Detailed Reviews of the Best Outdoor Tankless Water Heaters
Rinnai V53DeP Propane Tankless Water Heater – Tankless design provides endless hot water flow.
Breaking down the installation process, it’s worth noting that the vent piping can require careful planning and precise measurements, especially when routing through crawl spaces and roofs. Ordering all necessary pipes and fittings, including 45 and 90-degree angles, is essential. Double-walled pipes of the correct diameter are required. Online ordering can provide quick delivery, which is beneficial when replacing a hot water system.
While the installation can be challenging, particularly when lifting and mounting the unit while connecting the vent pipe, having a second person assist can be very helpful. Adapting to existing roof penetrations may require some ingenuity, such as creating custom inserts for proper sealing. A flashing unit and roofing tar are necessary for a waterproof seal.
Once installed, the unit performs well. While the maximum temperature setting is 120°F, which is slightly lower than some older units, it is generally sufficient. As with most on-demand heaters, there’s a brief lag before hot water reaches the tap, which can be mitigated by choosing a model with a recirculating pump for faster delivery.
Flexible, woven steel pipes are recommended for connecting the unit to gas, inlet, and outlet pipes due to their ease of use compared to copper pipes. Installing a phosphor filter upstream and a valve set for descaling will help with maintenance and longevity. Thorough preparation, research, and consulting available resources, such as online guides, are key to a successful installation.
Pros
- Tankless design provides endless hot water flow.
- High-efficiency heating saves on energy costs.
- Wi-Fi capable for convenient remote control.
- Enhanced scale detection ensures long-term performance.
- Compact wall-mounted design saves valuable space.
Cons
- Difficult install alone
- Temperature setting is limited
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater – High 7 GPM flow rate for demanding needs
Essential: This product serves as a direct replacement for older models, offering a seamless transition and extended usability. With a lifespan of approximately 10 years for the previous model, this new unit promises long-term reliability and value. The product arrives pre-configured, ensuring a hassle-free setup and immediate functionality right out of the box.
This streamlines the installation process, minimizing downtime and allowing for quick integration into existing systems. While the product is designed for ease of use, it is strongly advised to enlist the services of a certified plumber for installation. This precaution is essential due to the involvement of gas lines, ensuring safety and adherence to proper installation standards.
By entrusting the installation to qualified professionals, individuals can have peace of mind knowing that the product is installed correctly and safely. Choosing professional installation not only guarantees safety but also helps maximize the product’s performance and longevity. This investment in expert installation can prevent potential issues down the line and ensure that the product operates efficiently for years to come.
Pros
- High 7 GPM flow rate for demanding needs
- Outdoor style with freeze protection for reliability
- Self-diagnostic program simplifies maintenance and use
- Efficient, with hot-start for instant hot water
- Reputable Rheem brand known for reliable products
Cons
- Gas line install is required
- Plumber might be necessary
FOGATTI Natural Gas Tankless Water Heater – Outdoor Installation Up to 8.1 GPM – Multi-point hot water supply for whole home.
To provide an honest look, this product has proven to be an excellent purchase, consistently delivering high performance. Its functionality remains top-notch, even after several months of use, indicating its durability and reliability. This consistent performance assures individuals that the product is built to last and will continue to meet their needs over an extended period.
The product’s value proposition is strong, as it is worth the investment when compared to alternatives on the market. Its superior quality and performance justify the cost, offering a greater return on investment in the long run. Individuals can feel confident that they are making a worthwhile decision by choosing this product over potentially inferior options.
Furthermore, the product’s consistent “like a charm” operation highlights its ease of use and dependable functionality. This suggests that the product is well-designed and performs as expected, without any hiccups or complications. Individuals can rely on its consistent performance, ensuring a smooth and hassle-free experience.
Pros
- Multi-point hot water supply for whole home.
- Long warranty and CSA certified for safety.
- Easy installation and energy efficient operation.
- High flow rate and temperature for outdoor use.
Cons
- Here are two cons based on the review:
- Lacks advanced features
Propane Tankless Water Heater Outdoor – High heat output for fast water heating.
Finally (it’s here), a water heater that addresses many common frustrations! Its significantly smaller size offers a space-saving design, a welcome change from bulky traditional tanks. The added flexibility of outdoor installation provides even more options for placement.
This unit delivers instantaneous hot water, eliminating the frustrating wait times experienced with conventional heaters. Enjoy consistent hot water availability, even during peak usage times. Simultaneous hot water demands from multiple sources, such as showers, dishwashers, and sinks, are easily met without temperature fluctuations or cold water interruptions.
This provides a more comfortable and convenient experience for everyone. Durability and reliability are also key features. The unit is built to withstand the elements, remaining unaffected by dust storms, power outages, and even cold temperatures.
It continues to deliver consistent hot water, regardless of external conditions. After two months of operation, this tankless water heater has proven to be a reliable and efficient upgrade. Enjoy constant hot water on demand, eliminating the need to prioritize hot water usage between different appliances or activities.
Furthermore, there has been no significant change in utility bills since installation. If you’re looking for an upgrade, this unit is definitely worth considering.
Pros
- High heat output for fast water heating.
- Multiple safety features provide user protection.
- Good flow rate for various household needs.
- Includes remote control for easy operation.
- Compact floor mounting saves space effectively.
Cons
- Installation complexity
- Unknown long term reliability
Natural Gas Tankless Water Heater – Compact size fits in tight spaces.
Looking for a reliable solution for supplying water to multiple appliances? This product is a great option for effectively handling the water supply to two washers and a sink. Initial impressions are highly positive, with the product performing its intended function well.
The individual is satisfied with the performance thus far. The product’s value proposition is underscored by the statement that, should the need arise, the individual would purchase the product again, demonstrating confidence in its ability to meet their needs. This willingness to repurchase hinges on the product’s longevity.
The individual expresses contentment if the product lasts for at least a year. This highlights the expectation for a reasonable lifespan and underscores the importance of durability. It is important to note that the product does have a characteristic to be mindful of.
The unit significantly reduces water pressure. While the product effectively manages water supply, this pressure reduction may be a factor to consider depending on specific water pressure requirements and appliance needs. Individuals should assess their existing water pressure and the pressure requirements of their appliances to determine if this characteristic aligns with their specific needs.
Pros
- Compact size fits in tight spaces.
- Lightweight at 32.7 pounds, easy install.
- Simple, white color complements any decor.
- Includes all essential water heater components.
Cons
- Pressure is significantly reduced
- Installation can be difficult
Buying Guide: What to Look For in a Outdoor Tankless Water Heaters
Determining Your Hot Water Needs
Before diving into the world of best outdoor tankless water heaters, assess your hot water demands. Consider the number of simultaneous hot water users (showers, dishwashers, washing machines) and their flow rate requirements. This helps determine the Gallons Per Minute (GPM) rating you need. A higher GPM is crucial for larger households or situations with multiple simultaneous uses. Also, consider the temperature rise required – the difference between your incoming water temperature and your desired hot water temperature.
Fuel Type: Natural Gas vs. Propane
Outdoor tankless water heaters primarily run on natural gas or propane. Natural gas is often cheaper and more readily available in urban areas, while propane is more common in rural settings and requires a separate tank. Consider the availability and cost of each fuel type in your location. The product information provided highlights both types. Choosing the right fuel is a key step in selecting the best outdoor tankless water heater.
Key Features to Consider
Several features differentiate the best outdoor tankless water heaters. Look for models with high energy efficiency ratings to save on operating costs. Consider features like freeze protection, especially in colder climates. Wi-Fi connectivity allows for remote control and monitoring. Self-diagnostic programs simplify maintenance. A long warranty provides peace of mind. Compact designs save space, while high flow rates ensure adequate hot water for demanding needs.
Installation and Safety
Professional installation is highly recommended for outdoor tankless water heaters to ensure proper venting, gas connections, and electrical wiring. Prioritize models with multiple safety features, such as overheat protection and flame failure detection. Look for certifications like CSA to ensure the product meets safety standards. Proper installation and safety features are paramount when choosing the best outdoor tankless water heaters.
Frequently Asked Questions about Outdoor Tankless Water Heaters
What are the main benefits of an outdoor tankless water heater?
The primary benefit of an outdoor tankless water heater is an endless supply of hot water on demand. This eliminates the waiting time associated with traditional tank heaters and ensures you never run out of hot water during showers or while running multiple appliances simultaneously. Additionally, tankless heaters are more energy-efficient, as they only heat water when needed, reducing standby heat loss. The best outdoor tankless water heaters also free up indoor space since they are mounted outside.
How do I determine the correct GPM (Gallons Per Minute) rating for my home?
To determine the correct GPM rating for your home, list all the appliances and fixtures that use hot water simultaneously (showers, faucets, dishwashers, washing machines). Find the GPM requirement for each appliance (usually listed on the appliance itself or in its manual). Add up the GPM requirements of all the appliances you expect to use at the same time. This sum will give you the minimum GPM rating you need for your outdoor tankless water heater. Choosing the best outdoor tankless water heater means getting the right GPM.
Is professional installation required for an outdoor tankless water heater?
While some homeowners with plumbing and electrical experience may attempt to install an outdoor tankless water heater themselves, professional installation is highly recommended. Tankless water heaters involve gas lines, water lines, and electrical connections, and improper installation can be dangerous and void the warranty. A professional installer can ensure that the unit is installed correctly, safely, and in compliance with local codes. This ensures optimal performance and longevity of your best outdoor tankless water heater.
What is the typical lifespan of an outdoor tankless water heater?
The typical lifespan of an outdoor tankless water heater is longer than that of a traditional tank water heater, often lasting 20 years or more with proper maintenance. This extended lifespan is due to the absence of a tank, which eliminates the risk of corrosion and sediment buildup that can shorten the lifespan of tank heaters. Regular maintenance, such as flushing the system to remove mineral deposits, can further extend the lifespan of your best outdoor tankless water heater.
How does an outdoor tankless water heater handle freezing temperatures?
Many outdoor tankless water heaters are equipped with freeze protection features to prevent damage from freezing temperatures. These features typically include a built-in electric heater that automatically activates when the temperature drops below a certain point, preventing water from freezing inside the unit. Some models may also have recirculation systems that circulate warm water through the unit to prevent freezing. Check for freeze protection when selecting the best outdoor tankless water heater.
What are the energy efficiency benefits of a tankless water heater?
Tankless water heaters are significantly more energy-efficient than traditional tank water heaters. They only heat water on demand, eliminating standby heat loss, which is the energy wasted by tank heaters constantly heating water even when it’s not being used. This can result in significant energy savings over time, reducing your utility bills and lowering your carbon footprint. Investing in the best outdoor tankless water heater is an investment in energy efficiency.
What maintenance is required for an outdoor tankless water heater?
The primary maintenance task for an outdoor tankless water heater is flushing the system annually to remove mineral deposits that can accumulate over time. This can be done using a descaling solution and a pump to circulate the solution through the unit. Regular inspection of the unit for leaks or damage is also recommended. Following the manufacturer’s maintenance recommendations will help ensure the longevity and optimal performance of your best outdoor tankless water heater.
Can I use an outdoor tankless water heater indoors?
No, outdoor tankless water heaters are specifically designed for outdoor installation and should not be used indoors. Outdoor models are designed to withstand the elements and have different venting requirements than indoor models. Using an outdoor tankless water heater indoors can be dangerous due to improper venting and potential carbon monoxide poisoning. Always choose the correct type of water heater for your intended installation location.
What should I do if my tankless water heater is not producing hot water?
If your tankless water heater is not producing hot water, first check the power supply to ensure the unit is receiving electricity. Then, check the gas supply to ensure the gas valve is open and there is sufficient gas pressure. If both power and gas are present, check the unit’s error codes or self-diagnostic program (if equipped) to identify the problem. If you cannot resolve the issue yourself, contact a qualified technician for assistance.
What are the warranty considerations for an outdoor tankless water heater?
Warranty coverage varies depending on the manufacturer and model of the outdoor tankless water heater. Typically, warranties cover parts and labor for a specified period, often ranging from 5 to 12 years for the heat exchanger and 1 to 5 years for other components. Be sure to carefully review the warranty terms and conditions before purchasing a unit to understand the coverage and any exclusions. A longer warranty can provide greater peace of mind.
Conclusion: The Final Verdict
After careful consideration of all the options, we believe the Rinnai V53DeP Propane Tankless Water Heater stands out as the best overall choice for most users. It offers an excellent balance of features, performance, and value. Whether you are a casual user or a discerning enthusiast, this product delivers on its promises and provides a satisfying experience.
