10 Best Tankless Gas Water Heaters 2025 in the United States

The FOGATTI Natural Gas Tankless Water Heater is designed to deliver strong performance in a compact indoor unit, making it a good choice for households that need simultaneous hot water supply to multiple points like showers and sinks. It offers a high flow rate of up to 7.5 gallons per minute (GPM), which means it can handle several uses at once without running out of hot water. Its powerful 170,000 BTU rating supports quick heating, ensuring instant hot water, which is great for busy families or multitasking use. The unit features precise temperature control that keeps water temperature steady within about 1 degree, so you won’t experience sudden hot or cold bursts.

The FOGATTI Natural Gas Tankless Water Heater offers a strong performance with a maximum flow rate of 8.1 GPM and a high BTU rating of 180,000, making it suitable for large households needing hot water from multiple points simultaneously. Its outdoor installation is a convenient feature, especially with its compact size (26.2" x 17.1" x 7.1") and easy installation process, taking up little space. The precise temperature control, ensuring water temperature within 1°F accuracy, adds to its appeal by providing consistent comfort across different seasons.

The Rheem RTGH-95DVLN-3 is a strong contender in the tankless gas water heater category. With a flow rate of up to 9.5 gallons per minute (GPM) and a BTU rating of 199,900, it’s capable of supplying hot water for multiple outlets simultaneously, making it ideal for larger households. Its energy efficiency rating of 0.93 means you can expect decent savings on energy bills, which is a big plus for budget-conscious consumers. Additionally, the unit features an integrated digital display that allows for easy temperature adjustments, ranging from 100 to 140°F, catering to various user preferences.