10 Best Outdoor Propane Tankless Water Heater 2025 in the United States

The Orbek outdoor propane tankless water heater is designed for those looking for an efficient and reliable source of hot water in outdoor settings. With a flow rate of up to 5.1 GPM and a BTU rating of 120,000, it can comfortably service multiple fixtures at once, which is great for larger households or outdoor gatherings. One of its standout features is its ability to maintain a stable water temperature, adjusting rapidly to changes, ensuring a pleasant shower experience.

Safety is a major focus, with the heater being CSA certified and equipped with multiple protections against issues like overheat and water leakage. This can give peace of mind for users concerned about safety while operating in various weather conditions. The device is also designed to withstand harsh elements, including heavy winds and low temperatures, making it suitable for year-round use.

Energy efficiency is another strong point, utilizing high-quality materials for effective heat transfer. This can lead to savings on energy bills over time. The remote control and digital display make it user-friendly, allowing easy adjustments to the temperature settings without the need for constant manual input. However, there are some considerations to keep in mind. While the heater is compact, professional installation is recommended to ensure optimal performance, which may incur additional costs for some users. While it is marketed for outdoor use, those in extremely cold climates may need to take extra precautions to prevent freezing. Additionally, the weight of the unit could be a factor for some users when considering portability or installation.

The Orbek outdoor propane tankless water heater is a strong option for anyone seeking a dependable hot water solution for outdoor use, providing a favorable mix of efficiency, safety, and user-friendly features.

The Rinnai V53DeP is a versatile outdoor propane tankless water heater designed to provide endless hot water with a maximum flow rate of 5.3 gallons per minute (GPM). This is suitable for households needing to run multiple appliances simultaneously, up to four. Its compact size (13"W x 30"H) and wall-mounting design make it space-efficient and ideal for outdoor installation.

The unit is energy-efficient, only heating water when necessary, which can help reduce energy costs. Enhanced scale detection is a notable feature that helps in preventing long-term damage, potentially increasing the heater's lifespan. However, professional installation is recommended, which might add to the initial cost.

The heater also boasts high efficiency and Wi-Fi capability, allowing for remote monitoring and control. It comes with a robust warranty: 10 years for the heat exchanger, 5 years for labor, and 1 year for parts. This product is well-suited for someone looking for a reliable, long-lasting, and energy-efficient outdoor tankless water heater capable of serving a medium-sized household.

The Rinnai RE199eP Non-Condensing Propane Tankless Water Heater is an efficient and powerful option for those needing an outdoor installation. With a flow rate of up to 7.6 GPM, it can handle multiple fixtures simultaneously, ensuring you never run out of hot water. This model is compact, comparable to the size of a small suitcase, making it portable and easy to install in various outdoor settings.

The 199,000 BTU rating ensures quick heating, and the energy-efficient design only heats water when necessary, conserving energy. It also features a handy LED display that provides service reminders and error codes, which can be very helpful for maintenance and troubleshooting. A significant strength is its durability, backed by a robust residential guarantee (15 years for the heat exchanger, 5 years for parts, and 1 year for labor). However, professional installation is recommended, which might add to the initial cost. Furthermore, while it offers WiFi control, this requires an additional Controlr module, which is not included. The heater's design also meets strict environmental standards, such as the South Coast Air Quality Management District NOx emission levels.

One potential drawback is its non-condensing nature, which might be less efficient in capturing and reusing heat compared to condensing models. Additionally, users should verify if this heater is suitable for their region based on ground water temperature. This unit is best suited for households looking for a reliable and energy-efficient outdoor water heating solution with high flow rates and modern features.