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 RTG-84DVLP-3 Indoor Tankless Liquid Propane Water Heater boasts a high efficiency with a maximum flow rate of 8.4 gallons per minute, which is sufficient to supply hot water to multiple applications in your home simultaneously. This makes it ideal for households looking to maintain comfort during peak usage times, such as when using a shower and dishwasher at the same time. The unit is designed with energy-saving features, only operating when needed, which can help reduce energy costs.

Additionally, the water-saving setting conserves up to 1,100 gallons of water annually, making it an environmentally friendly choice. The hot-start programming prevents cold-water bursts, ensuring a consistent and comfortable hot water supply. Safety is enhanced with the LeakGuard Leak Detection and Prevention feature, which is a significant plus for avoiding potential damage and costly repairs. The heater is installed indoors and mounts on the wall, saving space with its dimensions of 13.5 inches wide by 24.2 inches high.

It is essential to note that it does not include a thermostat control, which some users might find inconvenient for precise temperature adjustments. At 46.5 pounds, it is moderately heavy, which could pose a challenge during installation. This heater is best suited for those who prioritize an efficient and space-saving solution for continuous hot water supply without the need for frequent thermostat adjustments.