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 RU160iN is a tankless hot water heater designed for indoor installation using natural gas. It boasts an endless hot water supply with a flow rate of up to 9 gallons per minute (GPM), supporting multiple appliances simultaneously, which is ideal for larger homes with high hot water demand. The tankless design offers significant space savings and efficiency, heating water only when necessary and qualifying for ENERGY STAR certification with an impressive Uniform Energy Factor of 0.97, indicating high energy efficiency.

Safety features include built-in recirculation pump technology that reduces wait times for hot water, enhancing convenience and safety by minimizing the risk of scalding. However, professional installation is recommended, which may incur additional costs. The unit is heavy, at 72.5 pounds, and wall-mounted, requiring a sturdy installation space. It's a reliable choice with a 15-year warranty on the heat exchanger, and its durability is reinforced by positive customer reviews, averaging 4.5 out of 5 stars.

The Wi-Fi monitoring option offers modern convenience, although the Controlr module is sold separately. The RU160iN is best suited for homeowners prioritizing energy efficiency and continuous hot water supply, with the caveat of needing professional installation. Its silver design is sleek, fitting well in modern homes, although it may not be the best fit for those with limited installation space or budget constraints.