10 Best Gas Heater For Home 2025 in the United States

The Rinnai RXP199iN Condensing Smart Sense Gas Water Heater is a versatile and efficient option for home use. With a high heating capacity of 199,000 BTU and a maximum flow rate of 11.1 gallons per minute, it can comfortably supply hot water to multiple fixtures simultaneously. The water heater boasts a super-high energy efficiency factor of UEF .98, making it a cost-effective choice over time.

The compact design, comparable to a small suitcase, allows for flexible installation both indoors and outdoors, thanks to the Versa Vent system. It's powered by either natural gas or propane, offering additional flexibility depending on your home's fuel availability. The Smart Sense gas control system and Smart-Circ Intelligent Recirculation add to its modern usability, learning your water usage patterns to optimize efficiency.

Safety is also a priority, with features like the internal pump and an easy-to-use interface for control and maintenance. However, professional installation is recommended, which could add to the initial cost and complexity for some users. Additionally, while the unit is WiFi-ready, the Control-R module required for connectivity is not included. This product is suitable for households looking for a high-capacity, efficient, and modern gas water heater with flexible installation options.

The Rinnai RX130iN Condensing Smart Sense Tankless Water Heater is quite versatile and efficient. It offers a substantial heating capacity of 130,000 BTU and high energy efficiency with a UEF rating of 0.97, making it a good choice for energy-conscious users. The heater can run on both natural gas and propane, adding to its flexibility, and it can be installed both indoors and outdoors, thanks to the Versa Vent system.

The compact design, comparable to the size of a small suitcase, saves space and provides a good flow rate of up to 7.1 gallons per minute, ensuring you won't run out of hot water even with multiple fixtures running simultaneously. However, it does require professional installation, which can add to the initial cost. Also, while it features a Smart Sense gas control system for efficient operation, the optional WiFi control unit is not included and must be purchased separately.

Its sleek design and robust features make it a solid option for many homes, especially those in regions supported by its temperature map. Just be mindful that installation might require an additional investment in professional services.

The Rheem RRTGH68DVLN3701169 is a tankless water heater designed for residential indoor use. It has an impressive heating capacity of 120,000 BTU, which makes it suitable for households needing consistent hot water. The efficiency rating of 0.93 is quite good, meaning it will save on energy costs over time. This model uses natural gas, and the electric ignition feature ensures it starts up reliably every time, without the need for a pilot light.

The flow rate ranges from 0.4 to 6.8 gallons per minute (GPM), making it versatile for different household needs, from low-flow fixtures to high-demand showers. You can set the temperature anywhere from 100 to 140 degrees Fahrenheit, which is convenient for various uses, though the default setting is 120 degrees Fahrenheit. Safety is a priority with this model, as it includes multiple warranties: a 1-year labor warranty, a 15-year warranty on the heat exchanger, and a 5-year parts warranty. These warranties offer peace of mind for potential buyers.

On the downside, the unit is somewhat bulky with dimensions of 17.7 inches in width and 23.7 inches in height, and it weighs about 59.9 pounds, which might be a consideration for installation space. It's designed for wall mounting, which can save floor space but requires proper installation brackets and clearances. The upfront cost might be higher compared to traditional tank models, but the long-term savings on energy bills and the convenience of endless hot water can offset the initial investment.