10 Best Gas Water Heaters 2025 in the United States

The Rinnai RXP199iN Condensing Smart Sense Tankless Water Heater is designed for versatile installation, functioning both indoors and outdoors. Its dual compatibility with propane and natural gas (thanks to the Smart Sense gas control system) makes it a flexible choice. With a high flow rate of up to 11.1 GPM, it can handle multiple fixtures simultaneously, ensuring a continuous supply of hot water. The compact size, comparable to a small suitcase, is convenient for homes with limited space.

The AO Smith BTR-200 Tank Type Water Heater stands out in the gas water heater category primarily due to its high energy efficiency and robust construction. Its ability to meet or exceed thermal efficiency and standby loss requirements ensures that it operates effectively, reducing energy consumption and saving on utility bills. Additionally, the electronic ignition feature simplifies the startup process, making it convenient to use. The heater is CSA certified and ASME rated, indicating a level of safety and quality that users can trust.

The Rinnai RX130iN offers impressive versatility and convenience, making it suitable for various installation environments—both indoor and outdoor—thanks to its Versa Vent feature. It can operate on either propane or natural gas, providing flexibility depending on your fuel availability. With a flow rate of up to 7.1 GPM, it ensures you never run out of hot water, easily supporting multiple fixtures simultaneously, which is ideal for larger households or demanding applications.