Looking for the best outdoor tankless water heater? Explore top picks that deliver instant, energy-efficient hot water with versatile features.
Choosing the best outdoor tankless water heater means prioritizing efficiency and convenience. The APUS 190,000 BTU offers a powerful 8.1 GPM flow rate, natural gas compatibility, and smart WiFi controls for easy management. Its ability to support up to five outlets makes it ideal for large households or multiple applications.
These heaters provide on-demand hot water perfect for outdoor showers, RVs, or garden kitchens. The FOGATTI model combines compact design with CSA certification, ensuring safety and reliability. Meanwhile, the Rinnai V53DeP excels in propane efficiency with a versatile 5.3 GPM output. The other half of this decision is review of rinnai ru199in.
In this full review, you’ll learn about key features, performance benefits, and which unit suits your outdoor heating needs best. Compare specs, durability, and ease of use to find your perfect match. Readers in this position usually ask about features of tankless heaters as well.
Finding the best fit for your outdoor heater
Compare the key features and specifications of our top picks to find the perfect match for your needs.
APUS 190000 BTU Tankless Water Heater
The APUS 190,000 BTU Outdoor Tankless Water Heater stands out in the best outdoor tankless water heater review category for its impressive combination of power, efficiency, and smart technology. Designed to deliver whole-home hot water with an 8.1 GPM flow rate, this natural gas heater supports up to five outlets simultaneously, making it ideal for busy households. Its advanced features, including WiFi and remote control capability, offer convenience and precise temperature management for an enhanced user experience.
Pros
Here are the key advantages that make the APUS Outdoor Tankless Water Heater a top choice for outdoor heating solutions:
- High Capacity: Delivers 190,000 BTU and 8.1 gallons per minute, supporting 3 showers plus 2 faucets at once without loss of pressure.
- Smart Temperature Control: Remote adjustment via Tuya App or wired controller with ±1°F accuracy ensures consistent comfort.
- Compact and Outdoor-Ready: Space-saving dimensions (22.48 × 15.51 × 6.54 inches) with rugged, wind-resistant design rated for all weather conditions.
- Energy Efficient: Utilizes a 100% oxygen-free copper heat exchanger and staged combustion technology for 20% energy savings compared to standard models.
- Safety Features: Includes freeze, overheat, and flame failure protections backed by a 2-year full warranty for peace of mind.
Cons
While highly capable, a few considerations should be noted before purchase:
- Requires Natural Gas Supply: Installation depends on access to a natural gas line, which may limit placement options.
- Outdoor Installation Only: Designed specifically for outdoor use, so indoor installation is not supported.
- Electric Power Needed: Must connect to a 120V AC power source, which might require electrical work if none is nearby.
- App Reliance: Smart features depend on app connectivity, which could be a drawback in areas with poor internet access.
FOGATTI Tankless Outdoor Water Heater
The FOGATTI Natural Gas Tankless Water Heater Outdoor is a standout choice for anyone seeking the best outdoor tankless water heater. This advanced unit delivers instant hot water with a powerful 180,000 BTU output and a maximum flow rate of 8.1 gallons per minute, making it ideal for multiple outlets such as showers and sinks. Its compact design and CSA certification underscore its reliability and safety for outdoor use.
Pros
This model excels in several key areas, ensuring high performance and user satisfaction:
- Instant Hot Water Delivery: Provides continuous hot water on demand, eliminating wait times for preheating.
- Robust Outdoor Durability: Designed specifically for outdoor installation with a bottom-mounted fan to prevent smoke backflow and promote stable combustion.
- Precision Temperature Control: Features advanced water servo technology and four-stage combustion to maintain temperature within ±1℉ for consistent comfort year-round.
- Compact and Easy Installation: Sized at 26.2 x 17.1 x 7.1 inches, it fits easily in tight spaces and supports low water pressure environments (15-150 PSI).
- Durable Build Quality: Incorporates an oxygen-free copper heat exchanger and 304 stainless steel burner for long-lasting performance.
- Comprehensive Warranty and Support: Offers 2 years full unit coverage and 5 years on the heat exchanger, backed by responsive customer service.
Cons
While the FOGATTI heater performs exceptionally, some considerations include:
- Freezing Precautions Required: Needs draining if unused below 5℉ to prevent damage, which may require additional maintenance in cold climates.
- Altitude Limitation: Recommended for use below 2000 feet altitude, which may restrict performance in higher elevation areas.
- Natural Gas Only: This model is designed exclusively for natural gas, limiting fuel options for some users.
Rinnai V53DeP Propane Tankless Heater
The Rinnai V53DeP Propane Tankless Water Heater offers an excellent solution for those seeking reliable and efficient outdoor hot water. Featuring a 5.3 GPM flow rate, this unit delivers endless hot water suitable for multiple appliances simultaneously, making it ideal for busy households. Its propane-fueled design ensures energy savings by heating water on demand, reducing waste and operational costs.
Pros
This tankless water heater stands out for several key benefits:
- High Flow Rate: 5.3 gallons per minute supports multiple water applications without loss of performance.
- Energy Efficiency: Heats water only when needed, lowering energy consumption and extending unit lifespan with advanced scale detection.
- Compact Outdoor Design: Space-saving form factor allows installation in tight areas without sacrificing hot water output.
- Robust Warranty: Includes a 10-year heat exchanger warranty and 5-year labor coverage, reflecting strong manufacturer confidence.
- Professional Installation Recommended: Ensures optimal performance and safety compliance.
Cons
While the Rinnai V53DeP excels in many areas, there are some considerations to note:
- Outdoor Use Only: Designed exclusively for outdoor installation, limiting indoor placement options.
- Installation Complexity: Requires professional installation, which may add to initial costs.
- Propane Dependency: Operates on propane, so availability and fuel costs vary by location.
Tankless Propane Water Heater 5.26GPM
The Tankless Water Heater Propane 5.26GPM 20L Outdoor Portable Gas Hot Water Heater stands out as an excellent choice for those seeking reliable hot water on the go. Designed specifically for outdoor use, this propane-powered unit delivers instant hot water with a maximum flow rate of 5.26 gallons per minute. Its compact design and advanced safety features make it a top contender in the category, as highlighted in this best outdoor tankless water heater review. For the detail, see our notes on under-sink heaters for hot water.
Pros
This propane water heater offers several advantages that make it ideal for camping, boating, and other outdoor activities:
- Advanced Safety Features: Includes flame failure device, anti-freezing protection, overheating protection, and a CSA-approved regulator, ensuring safe operation in various conditions.
- Energy Efficiency: Utilizes advanced combustion technology to reduce gas consumption and noise, with an impressive 11.5% energy saving compared to traditional models.
- High Performance: Generates up to 68,000 BTU/hour and can raise water temperature by as much as 167°F, providing endless hot water instantly.
- Portability: Lightweight and compact (17.12 x 7.87 x 26.77 inches), powered by two D-cell batteries, making it easy to transport and set up outdoors.
- Complete Accessory Set: Comes with a 5-foot CSA-approved gas regulator, multi-mode high-pressure shower head, long stainless steel hose, and convenient shower holder.
Cons
Despite its strengths, a few limitations are worth considering before purchase:
- Propane Only: Compatible exclusively with propane (LPG), limiting fuel options for some users.
- Water Pressure Requirement: Requires a minimum of 3.6 PSI water pressure to operate effectively, which may be restrictive in low-pressure environments.
- Maintenance Needs: Regular cleaning of the water inlet filter, shower head, and outlet is necessary to prevent scale buildup and maintain optimal water flow.
- Automatic Shut-off Timer: The 20-minute automatic shut-off feature can interrupt longer showers, requiring a manual reset by toggling the water faucet.
Rheem RTG-70XLN-3 Outdoor Tankless Water Heater
The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater stands out as a top contender in any best outdoor tankless water heater review. Delivering up to 7.0 gallons per minute (GPM) with a powerful 160,000 BTU output, this unit is ideal for homes with 2 to 3 bathrooms, efficiently handling multiple simultaneous hot water demands such as showers and laundry. Its outdoor design and robust metal cabinet ensure durability and ease of installation, while the hot-start programming enhances user comfort by eliminating cold water bursts.
Pros
Here are some of the key advantages that make the Rheem RTG-70XLN-3 a reliable and efficient choice:
- High flow rate: Provides up to 7.0 GPM, suitable for multiple simultaneous uses without temperature drops.
- Energy efficient: Utilizes natural gas with 160,000 BTUs, optimizing fuel consumption and reducing utility bills.
- Durable construction: Features a sturdy metal cabinet designed for long-term outdoor use.
- Hot-start technology: Prevents cold water bursts, ensuring consistent hot water delivery, especially during back-to-back showers.
- Space-saving design: Wall-mountable, freeing up valuable indoor space and simplifying installation by a qualified professional.
Cons
Despite its many strengths, there are a few considerations to keep in mind:
- Outdoor installation only: Requires proper weather protection and may not be suitable for all climates without additional shelter.
- Professional installation needed: Must be installed by a qualified technician to ensure safety and optimal performance.
- No condensing technology: While highly efficient, it lacks the added efficiency of condensing models, which may impact energy savings slightly.
Faq about best outdoor tankless water heater review:
1: What is a tankless water heater?
A tankless water heater heats water on demand, providing a continuous supply without the need for a storage tank.
2: Why choose an outdoor tankless water heater?
Outdoor tankless water heaters save space indoors and are designed to withstand outdoor elements, making them ideal for homes without basements. We cover tankless water heater reviews in its own guide.
3: What should I look for in the best outdoor tankless water heater?
Consider factors like flow rate, energy efficiency, temperature range, and durability when selecting the best model for your needs.
4: Are outdoor tankless water heaters energy-efficient?
Yes, they are generally more energy-efficient than traditional water heaters, as they only heat water when in use, reducing energy waste.
5: How do I install an outdoor tankless water heater?
Installation typically requires professional help for proper gas or electrical connections, venting, and compliance with local codes. The other half of this decision is top whole house heaters.
6: What maintenance is required for outdoor tankless water heaters?
Regular descaling to prevent mineral buildup and periodic inspections to ensure proper functioning are essential for maintenance.
7: How long do outdoor tankless water heaters last?
With proper maintenance, they can last 15 to 20 years, significantly longer than traditional tank water heaters.
Conclusion
The APUS 190,000 BTU model distinguishes itself with superior heating capacity and smart features like WiFi and remote control, ideal for households requiring simultaneous hot water at multiple outlets. Its high efficiency supports extensive use, making it a robust choice for larger homes or heavy-duty applications.
The FOGATTI 180,000 BTU unit offers a compact, CSA-certified design with reliable performance and a slightly lower flow rate. It suits users prioritizing space-saving solutions without sacrificing consistent instant hot water delivery. Both products excel in durability and efficiency, but your decision hinges on whether advanced connectivity or streamlined design better aligns with your specific needs.
