Best 40 Gallon Gas Water Heaters in 2024

Dive into superior home comfort with our guide to the ‘Best 40-gallon Gallon Gas Water Heaters.’ Unveil a world of efficient and reliable hot water solutions that cater to your household needs. From powerful performance to space-saving design, discover the perfect balance of capacity and convenience for an upgraded daily routine.

Bradford White 40 Gallon Natural Gas Water Heater

Experience unparalleled hot water efficiency with the Bradford White 40-gallon natural gas water heater. Standing at 20 inches wide and 60.5 inches tall, this indoor installation powerhouse combines a sleek design in green and white hues.

Powered by the Bradford White ICON System, this water heater boasts an innovative flame arrestor design with advanced ScreenLok technology. The resettable thermal switch ensures safety, and the factory-installed Hydrojet Total Performance System guarantees maintenance-free operation. Crafted from durable metal and copper materials, it weighs in at 134 pounds.

With a generous 40-gallon capacity, this water heater is your go-to solution for a reliable and consistent hot water supply. By harnessing wind power as its energy source, it not only delivers exceptional performance but also contributes to a sustainable and eco-friendly home. The RG40T6N model from Bradford White is your key to enjoying a seamless hot water experience with cutting-edge technology and robust construction. Upgrade your home’s water heating system with this high-performing, efficient, and durable natural gas water heater.


Pros:

  • Bradford White ICON System for advanced performance
  • Flame Arrestor Design with Advanced ScreenLok Technology
  • Resettable Thermal Switch for enhanced safety
  • Factory-Installed Hydrojet Total Performance System
  • Durable metal and copper construction
  • 40-gallon capacity for ample hot water supply
  • Wind-powered for eco-friendly operation

Cons:

  • Indoor installation only
  • Weighs 134 pounds and may require additional support during installation

A.O. Smith ENS-40 ProMax Short Electric Water Heater

Elevate your home’s hot water experience with the A.O. Smith ENS-40 ProMax Short Electric Water Heater. This 40-gallon powerhouse in sleek gray boasts potent 4500-watt performance, operating at a reliable 240 volts. Crafted with precision from durable materials like aluminum, stainless steel, and brass, it ensures longevity and robust functionality.

Featuring a Permaglas glass coating, this water heater stands guard against corrosion, maximizing the tank’s lifespan. The Dynaclean diffuser dip tube, made from enduring PEX cross-linked polymer, efficiently reduces lime and sediment buildup while optimizing hot water output.

The CoreGard anode rod, an aluminum powerhouse with a stainless steel core, provides superior protection against corrosion compared to ordinary steel anodes. Its tamper-resistant brass drain valve adds a layer of durability, promising reliable performance throughout.

Designed for indoor installation, this water heater from Trumbull Industries meets all current regulations outlined by the National Appliance Energy Conservation Act (NAECA). With a footprint of 22 x 22 x 50 inches and a weight of 124 pounds, this unit seamlessly integrates into your home, ensuring a consistent and efficient hot water supply. Upgrade to the A.O. Smith ENS-40 for a reliable, corrosion-resistant, and long-lasting solution to your hot water needs.


Pros:

  • 40-gallon capacity for ample hot water supply
  • Permaglas glass coating protects against corrosion, maximizing tank life
  • Dynaclean diffuser dip tube minimizes lime and sediment buildup
  • CoreGard anode rod with stainless steel core enhances corrosion resistance
  • Durable tamper-resistant brass drain valve
  • Meets NAECA regulations for energy efficiency

Cons:

  • 240 volts may require professional electrical setup
  • Weighs 124 pounds, may need assistance during installation

Noritz EZTR40 Natural Gas 40-Gallon Tankless Water Heater

Meet the Noritz EZTR40 Natural Gas 40-Gallon Tankless Water Heater—your gateway to efficient, on-demand hot water. Weighing in at 54.9 pounds and standing at 18.3 inches x 9.4 inches x 27.2 inches, this retro-styled powerhouse is a game-changer for your home.

The ‘EZTR40’ lives up to its name with an easy replacement process, seamlessly fitting into your space in the time it takes to install a traditional tank-type water heater. Boasting a maximum flow rate of 6.6 gallons per minute, this unit ensures a steady and ample supply of hot water whenever you need it.

Powered by natural gas and equipped with a 6-foot attached power cord for added convenience, the EZTR40 is not just a water heater; it’s an energy-efficient solution. With a remarkable 0.91 energy factor and gas consumption ranging from 15,000 BTUh to 120,000 BTUh, it delivers both performance and eco-friendliness.

Installation is a breeze with the included N-FlexKit, designed for easy integration into existing water heater venting. Say goodbye to waiting for hot water and hello to a sleek, reliable, and energy-conscious choice for your home—the Noritz EZTR40. Upgrade to efficiency; upgrade to comfort.


Pros:

  • Easy replacement process (EZTR40)
  • Quick installation is comparable to tank-type heaters
  • 6.6 Gallons Per Minute flow rate for consistent hot water
  • Retro-styled design adds a touch of flair
  • Energy-efficient with a 0.91 energy factor
  • Wide gas consumption range: 15,000 to 120,000 BTUh
  • Convenient 6-foot-attached power cord
  • N-FlexKit included for seamless venting integration

Cons:

  • Requires natural gas as a power source
  • Initial investment may be higher than traditional water heaters

Rheem PROG40-38N RH59 Natural Gas Water Heater


Elevate your home’s water heating experience with the Rheem PROG40-38N RH59 Natural Gas Water Heater. Crafted with a classic design and a 40-gallon capacity, this innovative unit brings unmatched efficiency to your daily life. Powered by wind, its eco-friendly burner boasts low emissions, meeting stringent 40 ng/J Knox requirements.

Rheem’s exclusive R-Tech (registered) anode rod ensures long-lasting tank protection, offering durability you can rely on. Lighting up effortlessly without the need for matches, the EverKleen patented system combats sediment build-up, keeping your water heater in prime condition. The enhanced-flow brass drain valve, Low Lead Compliant, ensures optimal performance.

Constructed with high-quality brass material, this water heater is both reliable and environmentally conscious. With a product dimension of 20 x 20 x 50 inches and a mere 0.01 ounces in weight, this model seamlessly replaces the old 22V40F1, upgrading your home with cutting-edge technology. Trust in Rheem’s legacy of excellence as you enjoy the convenience and eco-friendly features of the PROG40-38N RH59. Welcome to a new era of water heating in your home.

Pros:

  • Eco-friendly burner with low emissions
  • Rheem exclusive R-Tech anode rod for extended tank protection
  • Effortless ignition with EverKleen patented system
  • Enhanced-flow brass drain valve for optimal performance
  • Wind-powered for sustainable energy use

Cons:

  • None

Bosch Electric Mini-Tank Water Heater

Compact yet powerful, the Bosch Electric Mini-Tank Water Heater delivers instant hot water wherever you need it. With a sleek white design and lightweight construction, this 4-gallon point-of-use mini-tank conveniently fits under your sink, eliminating the wait for hot water. Boasting a thermal efficiency of 98%, this water heater ensures rapid hot water delivery to meet your every need.

Crafted with premium glass-lined material, this electric water heater is not only easy to maintain but also guarantees a long service life. The 1440-watt power, operating at 120 volts, provides a fast recovery rate, supplying hot water to up to two sinks simultaneously. The independent installation with a 36-37″ cord allows flexibility, easily plugging into a 120-volt outlet or seamlessly integrating with a larger hot water source.

Whether mounted on a shelf, wall, or floor (bracket included), this Bosch water heater offers versatile installation options. Tap directly into the cold water line and experience the convenience of on-demand hot water. Say goodbye to long waits and elevate your daily routines with the efficiency and reliability of the Bosch Electric Mini-Tank Water Heater.


Pros:

  • Compact 4-gallon size for point-of-use convenience
  • Rapid hot water delivery with a 98% thermal efficiency
  • Premium glass-lined material ensures long-lasting durability
  • Fast recovery rate supplies hot water to up to two sinks simultaneously
  • Lightweight design for easy installation and versatility

Cons:

  • Limited capacity is suitable for point-of-use applications
  • Operates on 120 volts and may require a dedicated outlet
  • Not suitable for high-demand or whole-house water heating
  • Maximum operating pressure capped at 150 PSI

Buying Guide for the Best 40-Gallon Gas Water Heaters

A reliable and efficient water heater is essential for providing hot water for your home’s daily needs. When it comes to selecting the best 40-gallon gas water heater, there are several important factors to consider to ensure you make the right choice. In this buying guide, we’ll walk you through the key features and considerations to help you find the perfect water heater for your specific needs.

Capacity and size:

The first and most crucial aspect to consider is the tank size, typically expressed in gallons. A 40-gallon gas water heater is suitable for smaller to medium-sized households, providing enough hot water for 2 to 4 people. Ensure the physical dimensions of the unit fit the space where it will be installed, considering height, width, and depth.

Energy Efficiency:

Look for a water heater with a high Energy Factor (EF) rating to ensure energy efficiency and lower operating costs. Energy Star-certified models are a great choice, as they are designed to save on energy consumption.

Recovery Rate:

The recovery rate is the speed at which the water heater can heat up the cold water to the desired temperature. Higher recovery rates are important if you have a large family or high water demands. Aim for a water heater with a decent recovery rate to ensure a consistent hot water supply.

Fuel Type:

Since you’re specifically looking for a gas water heater, consider whether you want a natural gas or propane model. Ensure your home has the appropriate gas line and ventilation for the chosen fuel type.

Ventilation:

Proper ventilation is crucial for the safe operation of a gas water heater. Choose a model that is compatible with your home’s ventilation system, whether it’s through a chimney, power vent, or direct vent.

Warranty:

A longer warranty period indicates the manufacturer’s confidence in the product’s durability. Look for water heaters with warranties covering both the tank and parts. A warranty of 6 to 12 years is typical for quality gas water heaters.

Brand Reputation:

Opt for established and reputable brands known for their reliable water heaters. Reading customer reviews and seeking recommendations can help you make an informed decision.

Temperature Control:

Having control over the water temperature is essential for safety and comfort. Look for a water heater with adjustable temperature settings and safety features like anti-scald protection.

Installation and Maintenance:

Consider the cost and ease of installation. Some models may require professional installation, while others are designed for DIY installation. Additionally, check the maintenance requirements and make sure you can easily access and replace components if needed.

Price:

While it’s tempting to choose the cheapest option, it’s important to balance cost with quality and efficiency. A slightly higher upfront cost for a more efficient model can result in long-term savings on your energy bills.

Local Codes and Regulations:

Be aware of local building codes and regulations related to gas water heater installation. Make sure the unit you choose complies with these standards.

Additional Features:

Some gas water heaters come with additional features such as digital displays, self-cleaning mechanisms, or corrosion-resistant materials. These extras may improve convenience and longevity.

Maintenance:

Regular maintenance is essential to keep your gas water heater running efficiently. Familiarize yourself with the manufacturer’s recommendations for maintenance and consider factors like the ease of accessing and cleaning the tank.

Safety:

Ensure the water heater you choose meets safety standards and has safety features like a pressure relief valve and a flue baffle to prevent overheating and dangerous pressure buildup.

By considering these factors, you’ll be well-prepared to choose the best 40-gallon gas water heater that suits your household’s needs and provides reliable hot water for years to come. Remember to consult with a professional plumber or HVAC technician for installation and maintenance, ensuring the safe and efficient operation of your new water heater.