Best Gas Water Heaters of 2025

The Rinnai Tankless Water Heater is designed for both indoor and outdoor use, making it versatile for any home. You can enjoy continuous hot water with its compact design, providing up to 11.1 gallons per minute, enough for seven fixtures simultaneously. Its user-friendly interface and Quick Flush feature simplify maintenance, ensuring you have efficient hot water on demand. Additionally, the high energy efficiency rating means you can save on energy costs while enjoying reliable performance. For optimal installation, it is recommended to seek professional help, ensuring everything runs smoothly.

The Rheem Tankless Water Heater ensures you have a continuous supply of hot water for all your household needs, even when multiple fixtures are in use. This high-efficiency model only operates when hot water is required, helping you save on energy costs. Additionally, it features a water-saving setting that can conserve up to 1,100 gallons annually, making it an eco-friendly choice. With hot-start programming, you won’t have to worry about sudden bursts of cold water, providing you with comfort and reliability in your daily routines.

The Forimo Tankless Water Heater offers on-demand hot water with a flow rate of 3.18 gallons per minute, making it perfect for your bathroom and kitchen needs. It features advanced safety controls, such as a flame failure device and overheating protection, ensuring safe operation without worry. Crafted from durable stainless steel and equipped with a built-in copper water tank, this heater promises longevity and resistance to corrosion. With easy assembly using standard fittings and a digital display for temperature adjustments, you'll enjoy convenience and efficiency at your fingertips.

The Orbek Tankless Water Heater offers an endless supply of hot water with a remarkable capacity of up to 4.3 gallons per minute, allowing you to comfortably use multiple fixtures at once. Safety is a priority, as it comes with advanced features like overheat and water leakage protection, ensuring peace of mind during use. Its energy-efficient design, made from high-quality copper, adjusts to seasonal demands, helping you save on energy bills. Additionally, its compact size fits easily into tight spaces, making it an ideal solution for homes with limited room for traditional water heaters.

The Rheem Tankless Water Heater offers a versatile flow rate ranging from 0.4 to 9.5 gallons per minute, ensuring you have hot water when you need it. You can easily adjust the temperature settings between 100 to 140°F, with a default of 120°F, providing comfort for various needs. The electric ignition feature makes starting up the heater simple and reliable. Additionally, this unit comes with extensive warranties, covering labor for one year, the heat exchanger for 15 years, and parts for five years, giving you peace of mind in your investment.

The MIZUDO Tankless Water Heater offers a reliable solution for your hot water needs. With its CSA certification, you can trust its safety features, including protection against overheating and accidental flameouts. Enjoy an endless supply of hot water at up to 4.3 gallons per minute, ensuring you never face a temperature drop during use. Its durable oxygen-free copper water tank minimizes heat loss, enhancing efficiency and longevity. Plus, its compact design saves more than 50% of the space compared to traditional tank heaters, making it ideal for smaller areas.

The Rinnai Tankless Water Heater is a versatile solution for your hot water needs, suitable for both indoor and outdoor installation. Its compact size allows it to fit in tight spaces while still delivering up to 11.1 gallons per minute, perfect for multiple fixtures running simultaneously. With a user-friendly interface and a Quick Flush feature, maintenance becomes a breeze. Additionally, the Smart-Circ technology learns your hot water usage patterns, optimizing the pump and recirculation for maximum efficiency and convenience. This means you can enjoy hot water exactly when you need it, without any hassle.

The FOGATTI Outdoor 8.1 GPM Natural Gas Tankless Water Heater features tankless design for unlimited hot water, 180,000 BTU high heating capacity, and maximum 8.1 GPM suitable for 3-5 outlet points. Its UEF over 0.81 can effectively reduce energy loss. CSA certified for superior safety and durability, it has built-in forced exhaust fan for stable combustion and compact design for easy installation. Professional installation is required.

The Forimo Tankless Water Heater offers a reliable solution for your hot water needs. With a steady temperature control system and multiple safety features, including flame failure and overheating protection, you can enjoy peace of mind while using it. The unit provides an impressive 4.21 gallons of hot water per minute, making it perfect for simultaneous use in multiple locations like bathrooms and kitchens. Additionally, its efficient design reduces gas consumption, helping you save on energy costs while keeping noise levels low. The stainless steel construction ensures durability and resistance to corrosion, enhancing its overall lifespan.

The Camplux Tankless Water Heater is a portable and lightweight design that is perfect for outdoor camping. It has a flow rate of 1.32 GPM, with a temperature raise of up to 114.8℉ (46℃). It is versatile and ideal for off-grid and rural areas. This tankless water heater is CSA Approved with 6-in-1 protection, and it comes with a 1-year guarantee, 5 feet premium on/off shower head, 5 feet gas regulator, 1 set US-standard garden hose, and 1 installation hardware pack. Setting it up takes just 10 minutes. It is important to avoid gas leakage by following the installation instructions and checking for gas leaks before operating. Proper maintenance is necessary to avoid freeze damage.