Top Gas Water Heater Brands for Efficiency and Reliability

As temperatures drop and chilly days become more frequent, a reliable gas water heater can be a true household hero, ensuring that you never face a cold shower again. With numerous options on the market, selecting the best can be tricky, but several brands consistently earn high marks for performance and durability. Names like Rheem, Bosch, and AO Smith have established themselves as leaders in the industry, offering a blend of energy efficiency, innovative technology, and long-lasting reliability. For a deeper dive into the features and benefits of each, continue reading to discover which might best suit your home and lifestyle needs below.

Illustration of gas water heater

Best brands of gas water heater in 2025

Rheem

Rheem Manufacturing Company is a leading producer of gas water heaters, renowned for its high-efficiency and innovative products. As the largest manufacturer of water heating products in North America, Rheem offers a full line of tank and tankless water heaters, including models with ENERGY STAR ratings and advanced smart features. Their hybrid electric water heater is billed as the "most efficient water heater on earth," being four times more efficient than a standard electric tank. Founded in 1925, Rheem has expanded its product range to include heating, cooling, and commercial refrigeration, with a strong focus on energy efficiency and sustainability. For instance, their Prestige R98V furnace boasts a 98% annual fuel utilization efficiency (AFUE), highlighting their commitment to energy savings.

AO Smith

A.O. Smith is a leading producer of gas water heaters, renowned for its innovative and energy-efficient products. The company reported record sales of $3.9 billion in 2023, driven by strong demand for water heater products, and achieved a 21% increase in adjusted earnings per share to $3.81. With over 140 years of experience, A.O. Smith specializes in condensing technologies and solar thermal energy systems, offering highly efficient solutions that meet European Energy Related Products (ErP) Directives. Their products, such as the BFC Cyclone and Innovo models, are designed for high efficiency and have been industry leaders since the late 1990s. A.O. Smith's commitment to innovation and sustainability makes it a trusted name in the water heating industry. For more details, you can view their product catalogue.

Bradford White

Bradford White is a renowned brand in the water heating industry, particularly esteemed for its high-quality and reliable gas water heaters. In 2023, the gas and oil segment, which includes Bradford White's products, dominated the U.S. water heater market with over 40% share. The company's products, such as the Brute XTR commercial boilers and volume water heaters, feature advanced elements like low-pressure drop water tube heat exchangers and touchscreen controls, enhancing their appeal to a wide range of consumers. Bradford White's commitment to quality and reliability is underscored by its 100% American-made products, which are often recommended by licensed plumbers. The brand's innovations and product offerings are expected to contribute to the U.S. water heater market's growth, projected to reach USD 5.08 billion by 2029 with a CAGR of 6.66%. For more information, you can visit their official website.

Rinnai

Rinnai is a leading brand in the tankless water heater market, renowned for its innovative and efficient products. With a 100-year commitment to quality, Rinnai offers industry-leading warranties and is the first major tankless brand assembled in the U.S.A. The company has invested $70 million in a new Georgia facility for noncondensing tankless gas heaters, underscoring its dedication to energy efficiency and consumer choice. Rinnai's products, such as the SENSEI RX Series, boast industry-leading efficiencies up to 0.98 UEF, and around 20% of consumers favor their tankless options. Despite regulatory challenges, Rinnai continues to innovate, with plans to expand its product line and maintain its market leadership.

Bosch

Bosch is a leading producer of gas water heaters, known for their high efficiency and innovative technology. Their gas tankless water heaters are EnergyStar certified and can be up to 15% more efficient than traditional models due to their condensing technology, which captures latent condensation heat from burner exhaust gases. Bosch has been a significant player in the global gas water heater market, which is expected to reach $10.4 billion by 2028 with a CAGR of 6.0% from 2022 to 2028. The company's products are renowned for their reliability, compact design, and built-in safety features such as exhaust gas sensors. Bosch's commitment to quality is further underscored by their comprehensive warranty programs, including lifetime heat exchanger warranties and up to 10 years of full unit warranties.

Noritz

Noritz is a leading manufacturer of gas water heaters, renowned for its innovative and energy-efficient solutions. Since introducing the first modern, electronically controlled tankless water heaters in 1981, Noritz has remained a pioneer in the industry, offering high-quality products that deliver superior hot water delivery and significant energy savings. Their gas-powered models can heat water up to 50% faster than electric models and come with advanced features such as wireless connectivity and smartphone app control. With over 60 years of experience, Noritz continues to push the boundaries of efficiency and performance in the water heating sector. Their products are widely recognized for their reliability and convenience, making them a top choice for both residential and commercial applications. Discover more about their innovative solutions on the Noritz official website.

Takagi

Takagi is a leading producer of gas water heaters, renowned for its high-efficiency models, with the highest efficiency rating at 95%, just 1% lower than Noritz's 96% efficiency. Takagi's gas water heaters utilize copper heat exchangers, which are about 25% more effective at heat exchange, ensuring faster water heating. The brand also offers innovative features like built-in recirculation pumps and various installation packages to suit different needs. In the global market, Takagi is one of the key players, contributing to the growth of the tankless water heater market projected to reach $12.3 billion by 2031. Takagi's products, such as the T-KJr2, are designed for residential applications and can handle hot water needs for up to two bathrooms in warmer climates.

Westinghouse

Westinghouse is a renowned brand in the home and kitchen appliances sector, including gas water heaters, known for its innovative and reliable products. With over 100 years of experience, Westinghouse continues to simplify home living with advanced technology and efficient designs. In the context of gas water heaters, the U.S. market, valued at USD 1.79 billion in 2023, is expected to grow at a CAGR of 6.1% from 2024 to 2032, driven by energy efficiency and technological advancements. Westinghouse's products, such as tankless water heaters, offer benefits like on-demand heating and space savings, appealing to homeowners seeking efficiency and convenience. These high-efficiency models, with features like Wi-Fi connectivity, contribute significantly to the market's growth.

American Standard

American Standard is a trusted brand recognized worldwide for its reliable and energy-efficient gas water heaters, offering a comprehensive line of superior products that combine traditional craftsmanship with forward-thinking technology. Their gas water heaters are preferred by homeowners and commercial developers for their durability and efficiency, with features such as thicker gauge glass-lined tanks and up to a 12-year warranty. In the U.S. market, gas water heaters, including those from American Standard, are expected to grow at a CAGR of 6.1% from 2024 to 2032, driven by advancements in technology and supportive government policies. The demand for energy-efficient appliances like gas storage water heaters is increasing due to environmental sustainability and energy-saving concerns. American Standard's commitment to innovation and customer satisfaction makes it a leading choice in the industry.

Navien

Navien is renowned as the leading manufacturer of gas tankless water heaters in North America, offering high-quality, reliable, and energy-efficient solutions. Known for their durability, Navien tankless water heaters have a lifespan of about 15 to 20 years and come with a 15-year warranty on the heat exchanger. These heaters provide on-demand hot water, reducing utility bills and enhancing home value. Navien's models, such as the NPN-E Series, feature advanced technologies like stainless steel heat exchangers and built-in recirculation control, ensuring consistent hot water output. With decades of experience, Navien stands out for its unmatched reliability and endurance in the market.