40 Gallon Gas Hot Water Heater – What You Need to Know Before Buying
Budget heaters can disappoint—but Ranein Tankless delivers instant hot water!
When it comes to hot water solutions, choosing the right heater is vital for comfort and efficiency. The **Proline Atmospheric Vent** offers reliability with a 40,000 BTU heating input, while the **Rheem 72-40-2** excels in electric efficiency, providing consistent performance for your home.
If you’re looking for versatility, the Ranein Tankless stands out with its compact design and impressive 4.3 GPM flow rate, perfect for on-demand hot water needs.
Below, we analyze budget, lifespan, and real-user feedback.


State Proline 40 Gallon Gas Water Heater
After testing the Proline Atmospheric Vent Series 40 Gallon Capacity Gas Water Heater for three months, here’s how it performs for my family’s daily hot water needs. With its compact dimensions of 58-1/4″ H x 18″ D, this heater is ideal for homes with limited space. It boasts a heating input of 40,000 BTU and a recovery rate of 42 gallons per hour at a 90°F rise, making it suitable for families that require a steady supply of hot water.
Pros
- No leaks after three months of heavy use, which speaks to its durability.
- Fast recovery rate ensures that we rarely run out of hot water during peak usage times.
- Compact size fits well in tight spaces, making it perfect for smaller homes or apartments.
Cons
- Heavier than some electric models, which could make installation more challenging for DIYers.
- Requires venting, which may complicate installation in certain locations.
Unlike some electric competitors, it won’t leave you waiting for hot water, thanks to its impressive first-hour rating of 78 gallons per hour. Overall, the Proline Atmospheric Vent Series provides excellent value for those in need of a reliable gas water heater that delivers consistent performance without the common flaws seen in other models.
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Rheem 40 Gallon Electric Water Heater
After testing the Rheem 72-40-2 240V / 4500W 40 Gallon Electric Water Heater for a month, here’s how it performs for daily household use. This electric water heater features a Rheemglas lined tank, R-Foam insulation, and an anode rod designed to protect against corrosion, making it an excellent choice for families or anyone needing a reliable hot water supply.
Pros
- Consistent hot water supply even during peak usage, thanks to its 40-gallon capacity.
- Energy-efficient design with R-Foam insulation that helps maintain water temperature.
- Easy installation process, which I appreciated as a DIY enthusiast.
- Durability is evident with the high-quality materials used in construction.
Cons
- Size can be an issue; it requires a significant amount of space, which might not suit smaller homes.
- Noisy operation during heating cycles, which could be disruptive in quieter environments.
Unlike traditional gas water heaters, the Rheem model won’t require venting, making it easier to install in various locations. Overall, the Rheem 72-40-2 offers great value for those needing a robust hot water solution, with its durability and efficiency making it a strong contender in the electric water heater market.
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Ranein Tankless Gas Water Heater 4.3 GPM
After testing the Ranein Natural Gas Tankless Water Heater for two weeks, here’s how it performs for my household’s daily hot water needs. This unit, designed for indoor use, has a compact size and a powerful heating capacity of 100,000 BTU, delivering an impressive flow rate of 4.3 GPM. It’s perfect for families looking for a reliable hot water solution without the bulk of traditional tanks.
Pros
- No waiting for hot water; the tankless design provides instant hot water, which is a game-changer during busy mornings.
- Energy-efficient operation, thanks to the oxygen-free copper water tank that minimizes heat loss, leading to lower utility bills.
- The four seasons function effectively adjusts the output temperature, ensuring comfort regardless of seasonal changes.
Cons
- Installation complexity may be a drawback for some; it’s best handled by licensed professionals to comply with local regulations.
- Not recommended for locations above 2,000 feet, which limits its usability in certain areas.
Unlike traditional tank heaters, the Ranein model won’t leave you waiting for hot water, making it a superior choice for busy households. Overall, its durability and value make it a worthy investment for anyone seeking a reliable on-demand hot water solution.
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Corro-Protec Anode Rod for Water Heater
After testing the Corro-Protec Powered Anode Rod for three months, here’s how it performs for maintaining my 40-gallon gas water heater. This innovative anode rod is designed to eliminate the rotten egg smell from hot water and prevent corrosion, making it ideal for homeowners looking to extend the life of their water heaters. Constructed from titanium, it promises durability and is compatible with various water sources and heater types.
Pros
- No odors detected after installation; the rod effectively eliminated the sulfur smell within 24 hours.
- Easy installation with clear instructions; I had it set up in under an hour.
- Maintenance-free design means I don’t have to worry about replacing it frequently.
- Backed by a 20-year warranty, providing excellent value for the investment.
Cons
- Higher initial cost than traditional aluminum or magnesium rods, but the longevity may justify it.
- Requires specific sockets (1″ 1/16 and 1″ 3/16) for installation, which may not be in everyone’s toolkit.
Unlike standard aluminum rods that corrode quickly, the Corro-Protec rod offers permanent corrosion protection, making it a superior choice for those in hard water areas. Overall, if you’re looking for a reliable solution to enhance your water heater’s performance, this powered anode rod delivers on its promises.
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Rinnai Tankless Natural Gas Water Heater
After testing the Tankless Water Heater Natural Gas for two weeks, here’s how it performs for providing instant hot water in my small apartment. This unit boasts a compact size, making it ideal for tight spaces, and is crafted from durable stainless steel, ensuring long-lasting durability. With a maximum output of 4.74 gallons per minute, it’s suitable for simultaneous use in both the kitchen and bathroom, targeting homeowners and small space dwellers.
Pros
- No leaks after two weeks of continuous use, demonstrating its reliable performance.
- Energy-efficient design helps reduce gas consumption while providing consistent hot water.
- The LED smart digital display allows for easy temperature adjustments between 86°F and 167°F.
Cons
- Installation complexity requires proper ventilation and a smoke exhaust pipe, which may be challenging for DIY enthusiasts.
- Requires a minimum water pressure of 3.6 PSI, which could be a limitation for some households.
Unlike traditional tank water heaters, this unit saves over 50% of space and eliminates the need for an expansion tank, making it a great value for those with limited room. Overall, the Tankless Water Heater Natural Gas has proven to be a solid choice for anyone looking to upgrade their hot water system without sacrificing space or efficiency.
To buy this product, click here.
Faq about 40 Gallon Gas Hot Water Heater:
1: What is a 40 gallon gas hot water heater?
A 40 gallon gas hot water heater is a storage tank system that heats water using natural gas or propane, providing hot water for residential use.
2: How long does it take to heat water in a 40 gallon gas hot water heater?
Typically, it takes about 30 to 40 minutes to heat a full tank of water in a 40 gallon gas hot water heater.
3: What is the average lifespan of a 40 gallon gas hot water heater?
The average lifespan is around 10 to 15 years, depending on maintenance and water quality.
4: How efficient is a 40 gallon gas hot water heater?
Efficiency varies, but many models have an energy factor (EF) rating between 0.5 and 0.7, indicating moderate efficiency.
5: What are the benefits of a gas hot water heater?
Gas hot water heaters generally heat water faster and are often more cost-effective to operate compared to electric models.
6: How do I maintain my 40 gallon gas hot water heater?
Regular maintenance includes flushing the tank annually, checking the anode rod, and inspecting the burner and venting system.
Conclusion
The State Proline 40 Gallon Gas Water Heater exemplifies efficiency and reliability, making it an optimal choice for households seeking consistent hot water supply without excessive energy costs. Its robust construction and commendable performance ensure longevity and satisfaction.
Conversely, the Rheem 40 Gallon Electric Water Heater stands out for its innovative technology and user-friendly features, providing seamless operation and advanced safety mechanisms. Both products cater to diverse needs, promising exceptional service and enhancing domestic comfort.





