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 Rinnai V65iN is a natural gas tankless hot water heater designed for indoor home use, delivering up to 6.5 gallons per minute (GPM) of hot water. This high flow rate means it can support multiple appliances at once, making it a good choice for medium to larger households needing constant hot water without running out. Its energy factor of 0.82 reflects decent efficiency, meaning it uses gas reasonably well but isn’t the most efficient model available. One of its strengths is the compact size (18 x 18 x 31.2 inches) and wall-mount design, which helps save space compared to traditional tank heaters. Temperature is preset at 120°F but can be adjusted up to 140°F by a professional installer, offering some control over water warmth. Safety is addressed through an integrated error code system and it’s certified for use in manufactured homes, indicating reliable safety features, though detailed safety specifics like automatic shut-off or flame failure protection aren’t highlighted in the brief.

The heater depends on professional installation, which may add upfront cost and complexity but ensures proper setup and safety. While it does not include a built-in thermostat control for easy user adjustments, it is compatible with Rinnai’s digital controllers, allowing for more precise temperature management if purchased separately. Its durable build is supported by solid warranty coverage: 10 years on the heat exchanger and 5 years on labor. This model is well suited for homeowners looking for space-saving, continuous hot water with good performance and decent efficiency, but it may require professional help to install and configure, and users should consider investing in additional digital controls for the best comfort.