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 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.

The Rinnai RX160iN is a versatile and compact tankless water heater that can be installed either indoors or outdoors, making it a flexible option for various home setups. It has a high energy efficiency factor of 0.97, which means it can help save on energy costs over time. The water heater offers a maximum flow rate of 9 gallons per minute (GPM), allowing it to handle multiple fixtures at once, so you shouldn't run out of hot water during peak usage times. This is ideal for larger households or those with higher hot water demands.