Best 50 Gallon Gas Water Heater Picks

The best gas water heater 50 gallon provides reliable, on-demand hot water for most households, ensuring comfort and convenience for daily tasks like showering and laundry. When selecting one, consider factors like energy efficiency ratings, burner design for optimal heating, and venting type suitable for your installation space, as a mismatch can lead to increased operational costs and inadequate hot water supply. Durability and warranty are also critical to avoid premature replacement.

Exploring various models will help you find the perfect unit to meet your specific needs. Below, we’ve compiled a list of top choices, detailing their features and benefits to help you make an informed decision for your home’s hot water system.

For those seeking the best gas water heater 50 gallon, consider models that prioritize efficient, on-demand hot water delivery, such as tankless options like the Rheem RTG-70XLN-3, which offers 7.0 GPM and 160,000 BTUs. Alternatively, traditional tank models like the Rheem PROG50-42N RH67 PV provide ample hot water for households using indoor air for combustion and a maintenance-free design.

Best Gas Water Heater 50 Gallon at a Glance

Image	Product	Buy
Best Pick 1	Rheem PROE50 M2 RH95 50-Gallon Professional Classic Medium Residential Electric Best for: Electric tank option	Check Price
Best Pick 2	Rheem PROG50-42N RH67 PV Professional Classic Residential 42K BTU Power Best for: Powerful gas heating	Check Price
Best Pick 3	Rheem PROG50-36P RH62 Professional Classic Tall Residential 36K BTU Atmospheric Best for: Standard gas heating	Check Price
Best Pick 4	Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Best for: Outdoor propane heating	Check Price
Best Pick 5	Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Best for: High-flow tankless	Check Price

How We Picked

Our selection for the best gas water heater 50 gallon prioritized build quality, real-world performance, and durability. We evaluated each model’s materials, efficiency ratings, and features like R-Tech anode rods for extended tank protection. Models with low NOx emissions and safety shut-off features were strongly favored.

Tankless options were considered for their unlimited hot water claims and GPM flow rates, while traditional tank models were assessed on recovery speed and capacity for households. We ruled out products lacking clear specifications on longevity and performance benchmarks, ensuring our recommendations represent true value and dependability for homeowners.

What Most Buyers Get Wrong

Understanding BTU: Powering Your Hot Water

For gas water heaters, the BTU (British Thermal Unit) rating is crucial. It indicates how much energy the heater can produce to heat water. Higher BTU models, like the Rheem RTG-95DVLN-3 at 199,900 BTUs or the GASLAND Gasmart E at 199,000 BTUs, can heat larger volumes of water faster, making them ideal for homes with high demand.

Lower BTU models, such as the Rheem PROG50-36P at 36,000 BTU, might be sufficient for smaller households or less frequent hot water usage.

Tank vs. Tankless: Which Flow Rate Suits You?

When selecting a gas water heater, consider whether a tank or tankless model best fits your needs. Tank models, like the Rheem PROG50-42N RH67 PV, store a set amount of hot water. Tankless models, such as the Rheem RTG-70XLN-3 (7.0 GPM) or Rheem RTGH Series (8.4 GPM), heat water on demand, offering a continuous supply.

The Gallons Per Minute (GPM) rating is key for tankless units; a higher GPM, like 9.5 GPM from the Rheem RTG-95DVLN-3, signifies more hot water can be delivered simultaneously, perfect for multiple simultaneous uses.

1. Rheem PROE50 M2 RH95 50-Gallon Professional Classic Medium Residential Electric

Best for: Medium Households Needing Space Efficiency.

This 50-gallon electric water heater’s 27.25-inch width allows for easy replacement of existing units, fitting comfortably in more locations and freeing up floor space in your home. Its isolated tank design minimizes heat loss, contributing to consistent hot water delivery for your daily needs. This model provides ample hot water for households with 3-5 people or homes with 3+ bathrooms.

Featuring a 50-gallon capacity, this unit is designed to support households with 3-5 people and can service up to 3 bathrooms without issue. It includes an enhanced-flow brass drain valve for easier maintenance and an automatic thermostat to maintain your desired water temperature, ensuring reliable comfort.

Pros

• Space-saving design fits into tight areas
• Isolated tank design minimizes heat loss
• Enhanced-flow brass drain valve for service
• Automatic thermostat for consistent temperature

Cons

• The electric power source requires dedicated wiring installation.

Ideal for homeowners needing to replace an older water heater and seeking a reliable, efficient electric 50-gallon option. This Rheem unit provides consistent hot water for medium-sized households with limited installation space.

2. Rheem PROG50-42N RH67 PV Professional Classic Residential 42K BTU Power

Best for: Homes Requiring Fast, Vent-Free Gas Heating.

With a 42,000 BTU output, this 50-gallon gas water heater delivers consistent hot water, utilizing indoor air for combustion and exhausting flue gases, simplifying installation without needing a dedicated vent for optimal airflow. Its unique air/fuel shut-off device requires no filter cleaning, reducing maintenance. This unit provides 32.4 gallons per minute of hot water.

This 50-gallon natural gas unit features a 42,000 BTU burner for robust heating performance and a 67% efficiency rating, ensuring economical operation. It supports long venting lengths up to 100 equivalent feet, offering flexibility in placement, and includes a Rheem exclusive R-Tech anode rod for extended tank protection.

Pros

• Uses indoor air for combustion
• Maintenance-free, no filter to clean
• Supports long venting lengths up to 100 ft
• R-Tech anode rod for tank longevity

Cons

• Requires a natural gas line connection for operation.

This Rheem 50-gallon gas water heater is a strong choice for homes needing efficient, powerful heating with flexible venting. It’s suited for households requiring reliable hot water delivery with simplified maintenance due to its filter-free design.

3. Rheem PROG50-36P RH62 Professional Classic Tall Residential 36K BTU Atmospheric

Best for: Eco-Conscious Homes with Low Emission Needs.

This 36,000 BTU atmospheric gas water heater features an eco-friendly burner and low NOx design, meeting stringent 40 ng/J NOx requirements for reduced environmental impact. Its patented EverKleen system actively combats sediment buildup, ensuring prolonged water heater efficiency and cleaner hot water. This model is designed for wall mounting.

The 50-gallon tall residential unit operates on gas powered with a 36,000 BTU heat output, providing ample hot water for daily needs. It includes an enhanced-flow brass drain valve that is low-lead compliant, prioritizing safety and ease of use. The unit is designed for easy ignition without matches.

Pros

• Low emissions burner meets strict standards
• EverKleen system fights sediment buildup
• Easy ignition, no matches required
• Enhanced-flow brass drain valve is low-lead compliant

Cons

• This atmospheric model requires proper venting for safe operation.

This Rheem 50-gallon gas water heater is ideal for environmentally conscious homeowners prioritizing low emissions and efficient operation. Its sediment-fighting system and easy lighting make it a practical choice for consistent hot water supply.

4. Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water

Best for: Medium Homes Needing Outdoor Tankless Hot Water.

Delivering up to 7.0 GPM, this outdoor tankless natural gas water heater ensures continuous hot water for 2–3 bathroom homes, even during peak demand. Powered by 160,000 BTUs, its high-efficiency design heats water instantly without a tank, providing on-demand hot water when you need it most. Its compact size is ideal for outdoor installation.

This durable tankless unit offers a 7.0 GPM flow rate and a maximum temperature of 140°F, perfect for simultaneously running showers and laundry. With a 160,000 BTU heat output and high efficiency, it provides fast, reliable hot water. Designed for outdoor wall mounting, it features an easy-to-read digital display for convenient operation.

Pros

• Provides 7.0 GPM for multiple simultaneous uses
• 160,000 BTU heats water quickly
• Designed for outdoor installation
• Features a digital display

Cons

• Requires professional installation for outdoor gas line and venting.

This Rheem outdoor tankless natural gas water heater is best for medium-sized homes with multiple hot water demands. Its high flow rate and on-demand heating make it an excellent choice for busy households seeking efficient, continuous hot water supply.

5. Rheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120

Best for: Homes Requiring High-Flow Tankless Hot Water.

With a powerful flow rate of 0.4 – 8.4 GPM, this tankless gas water heater delivers exceptional hot water volume for larger homes and simultaneous use. Its default 120°F setting is ideal for common household needs, and the intelligent electric ignition system ensures reliable startups every time. This unit is designed for wall mounting.

This model boasts an impressive 8.4 GPM flow rate, capable of supporting multiple fixtures concurrently, and offers adjustable temperature settings from 100°F to 140°F. The 157,000 BTU heat output ensures rapid heating, complemented by overheat film wrap for added safety. It comes with a 1-year labor warranty.

Pros

• Offers a high flow rate of 8.4 GPM
• Adjustable temperature from 100-140°F
• Electric ignition for reliable startups
• Overheat Film Wrap for safety

Cons

• Requires a gas line and electricity for operation.

This Rheem tankless gas water heater is suited for large families or homes with high hot water demand, offering a substantial 8.4 GPM flow. Its efficient heating and adjustable temperature make it a versatile solution for continuous hot water needs.

6. Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water

Best for: Large Homes Needing High-Capacity Indoor Heating.

Capable of delivering up to 9.5 GPM, this high-efficiency tankless gas water heater provides continuous hot water for 2–3 bathroom homes, effectively handling simultaneous usage like showers and laundry. Powered by natural gas with 199,900 BTUs, it ensures rapid, uninterrupted hot water supply even during peak demand periods, optimizing energy usage.

This indoor tankless unit features an impressive 9.5 GPM flow rate and a maximum temperature of 140°F, powered by a robust 199,900 BTU heating capacity for fast, on-demand hot water. Its high efficiency rating of 0.82 contributes to lower energy costs. Designed for wall mounting, it includes hot-start programming to minimize cold water bursts.

Pros

• Delivers 9.5 GPM for constant hot water
• 199,900 BTU heating capacity
• High efficiency rating of 0.82
• Hot-start programming for convenience

Cons

• Requires a natural gas line and 120V electrical connection.

This Rheem tankless natural gas water heater is ideal for large homes with significant hot water demand. Its high flow rate and heating power ensure that multiple fixtures can be used simultaneously without interruption, making it a highly efficient choice.

7. Rinnai CX199iN Condensing Smart Sense Commercial Natural Gas or Propane

Best for: Commercial or Large Residential Installs Indoors/Outdoors.

This condensing smart sense tankless water heater offers installation flexibility for indoors or outdoors, powered by either propane or natural gas with a Smart Sense gas control system, making it adaptable to various infrastructure needs. Its exceptional 97% thermal efficiency significantly optimizes energy usage, leading to reduced operational costs.

Boasting an 11.1 GPM flow rate and a maximum temperature of 185°F, this unit is designed for high-demand applications. With a powerful 199,000 BTU heat output and smart home compatibility, it provides efficient, on-demand hot water. The unit supports up to 150 PSI maximum pressure.

Pros

• Flexible indoor/outdoor installation
• Compatible with natural gas or propane
• 97% thermal efficiency for cost savings
• High flow rate of 11.1 GPM

Cons

• Requires a dedicated vent for outdoor installation (RX-OVC vent cap sold separately).

The Rinnai tankless water heater is perfect for commercial applications or large residences needing versatile installation and high-efficiency heating. Its dual-fuel capability and high flow rate make it a robust solution for continuous hot water needs.

8. Rheem RTG-70XLP-3 High Efficiency Non-Condensing Outdoor Tankless Liquid Propane Water

Best for: Homes Needing Outdoor Propane Tankless Hot Water.

This outdoor tankless liquid propane water heater delivers up to 7.0 GPM, providing sufficient hot water for 2–3 bathroom homes even when multiple appliances are running. Powered by 180,000 BTUs, it ensures rapid, continuous hot water, ideal for reducing wait times during peak household demand. Its compact design saves installation space.

Featuring a 7.0 GPM flow rate and a maximum temperature of 140°F, this unit is efficient for households with moderate to high hot water needs. The 180,000 BTU heat output guarantees quick heating, and its design includes industry-best side-to-side clearance for safe installation. It supports 1/2 inch gas line compatibility for easier setup.

Pros

• Provides 7.0 GPM flow rate
• 180,000 BTU heats water rapidly
• Designed for outdoor installation
• Industry-best side clearance for safety

Cons

• Requires a liquid propane supply and professional installation.

This Rheem outdoor tankless propane water heater is an excellent choice for homes with multiple hot water needs that utilize propane. Its reliable performance and safety clearances make it a practical and efficient solution for continuous hot water delivery.

9. MRCOOL 50 Gallon Electric Water Heater 4500W Tank, High Efficiency

Best for: Households Needing 50-Gallon Electric Tank Heating.

This 50-gallon electric tank water heater, equipped with dual 4500W elements, provides powerful and fast recovery performance, ensuring consistent hot water for showers, sinks, and laundry without prolonged wait times. Its high-efficiency design optimizes energy usage while maintaining strong, reliable performance for daily comfort. This unit is designed for floor mounting.

Featuring a 50-gallon capacity, this electric water heater is suitable for typical household demands by offering substantial hot water reserves. The dual 4500W heating elements accelerate the recovery process, minimizing downtime. It includes a self-cleaning system and a rare earth anode rod for enhanced longevity and consistent performance.

Pros

• Dual 4500W elements for fast recovery
• 50-gallon capacity for household needs
• Self-Cleaning System
• Rare Earth Anode Rod for durability

Cons

• Requires dedicated electrical hookup and wiring.

This MRCOOL 50-gallon electric water heater is ideal for homes needing a reliable supply of hot water with quick recovery times. Its tank-based design and efficient heating elements make it a solid choice for daily domestic use and laundry.

10. GASLAND Gasmart E 199,000 BTU Tankless Water Heater, Up to

Best for: Homes Seeking Unlimited On-Demand Hot Water.

This tankless gas water heater provides unlimited hot water on demand, eliminating waiting times for reheating and ensuring continuous flow for showers, laundry, or dishes. Certified by CSA and equipped with multiple safety features, it meets the highest standards for reliable operation and eco-friendly performance with an industry-leading UEF of 0.8.

With a high heat output of 199,000 BTUs and a flow rate of 7.6 GPM, this unit ensures rapid water heating for consistent, on-demand delivery. It features advanced safety functions including anti-freezing protection, dry combustion protection, and flame failure protection. The integrated error code indicator aids in troubleshooting.

Pros

• Provides unlimited hot water on demand
• Certified by CSA with multiple safety features
• Energy efficient with UEF of 0.8
• Features anti-freezing and dry combustion protection

Cons

• Operating on natural gas requires a gas line connection.

The GASLAND Gasmart E tankless water heater is perfect for homeowners prioritizing unlimited hot water and energy efficiency. Its user-friendly safety features and continuous supply make it an excellent upgrade for busy households.

Tankless vs. Tank: The True 50-Gallon Decision

When evaluating a 50-gallon model, the fundamental decision isn’t about BTU output or energy efficiency; it’s about whether you need truly unlimited hot water or if a replenished tank will suffice.

The Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water, Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water, and GASLAND Gasmart E 199,000 BTU Tankless Water Heater all represent the tankless philosophy. These devices provide hot water on demand, meaning you’ll never run out mid-shower, a stark contrast to the finite supply of a traditional tank. The Rheem RTG-95DVLN-3, with its higher GPM rating, can handle more simultaneous demands, a critical factor for larger households or those with multiple bathrooms relying on hot water concurrently.

The GASLAND Gasmart E 199,000 BTU Tankless Water Heater emphasizes this unlimited aspect, promising no waiting for reheat, a promise that a Rheem PROG50-42N RH67 PV Professional Classic Residential 42K BTU Power simply cannot meet.

However, this continuous supply comes at a cost, both in purchase price and installation complexity, often requiring significant modifications to gas lines and venting. For many homeowners, the more conventional approach of a 50-gallon tank, like the Rheem PROG50-36P RH62 Professional Classic Tall Residential 36K BTU Atmospheric, still provides adequate hot water for typical daily use with a simpler installation. The Rheem PROE50 M2 RH95 50-Gallon Professional Classic Medium Residential Electric, while electric, still adheres to the tank-based model, offering a substantial volume that is replenished over time.

The key trade-off lies not in a minor spec difference between competing tank models, but in the very architecture of hot water delivery. If your home regularly experiences multiple simultaneous demands for hot water, such as running dishwashers, washing machines, and showers at once, the continuous flow of a tankless unit like the Rheem RTGH Series 8.4 GPM 157,000 BTU 120 is the only solution that won’t lead to frustration. For less intense usage patterns, the cost-effectiveness and simpler integration of a best gas water heater 50 gallon tank, such as the Rheem PROG50-42N RH67 PV Professional Classic Residential 42K BTU Power, remain a sensible choice.

For households with 1-2 simultaneous hot water needs, the Rheem PROG50-36P RH62 Professional Classic Tall Residential 36K BTU Atmospheric offers a cost-effective and reliable solution.

What to Look For in Your Best Gas Water Heater 50 Gallon

Energy efficiency ratings

When selecting a 50-gallon gas water heater, prioritize energy efficiency to lower utility bills. Look for a high Uniform Energy Factor (UEF) score, which indicates how effectively the heater converts fuel to hot water. Aim for a UEF of 0.67 or higher for a standard tank, and consider models with a UEF of 0.80 or more if available; these represent superior efficiency.

The First Hour Rating (FHR) is critical for meeting peak demand; select a unit with an FHR that comfortably exceeds your household’s highest hourly hot water usage. Choose models with higher UEF scores and adequate FHR to ensure both long-term savings and reliable hot water supply.

Ventilation types

Ventilation is a crucial safety and performance consideration for gas water heaters. Natural vent models require a vertical chimney and are common but less efficient as they can lose heat. Direct vent systems draw combustion air from outside and vent exhaust through the same opening, offering better efficiency and placement flexibility.

Power vent models use a fan to expel exhaust gases, allowing for more installation locations and generally higher efficiency than natural vent. For the best combination of safety, efficiency, and installation flexibility, a direct vent or power vent system is the superior choice over a natural vent model, ensuring safe operation and optimal performance.

Ignition systems

The ignition system significantly impacts energy consumption and reliability in 50-gallon gas water heaters. Standing pilot lights are the most basic but continuously consume a small amount of gas. Electronic ignition systems eliminate the pilot light, igniting the burner only when hot water is needed, leading to substantial gas savings.

Intermittent pilot ignition is an improvement over standing pilot, activating the pilot light only when the thermostat calls for heat. For maximum energy savings and modern reliability, an electronic ignition system is the definitive best choice, ensuring you’re not wasting gas and enjoy dependable operation.

Which Should You Choose?

• If you need to replace an existing water heater and have limited space, choose a compact 50-gallon tank model.
• If you prioritize fuel efficiency and have a consistent need for hot water, look for a high-BTU tankless gas unit with a high GPM output.
• If you have 3-5 people in your household and multiple bathrooms, a standard 50-gallon tank heater, whether electric or gas, will likely suffice.
• If you have a larger home with multiple hot water demands simultaneously, consider a high-flow rate tankless gas water heater.

Quick Best Gas Water Heater 50 Gallon Buying Checklist

• Check Local Codes: Ensure your chosen model meets all local building and plumbing regulations.
• Ventilation Method: Confirm the unit’s ventilation type (natural, direct, or power vent) is suitable for your installation location.
• Energy Factor (EF): Look for a higher EF rating for better energy efficiency and lower operating costs.
• First Hour Rating (FHR): Select a unit with an FHR that comfortably meets your household’s peak hot water demands.
• Warranty: Inspect the manufacturer’s warranty for both parts and the tank to ensure long-term protection.
• Dimensions and Connections: Verify the physical size and inlet/outlet pipe sizes will fit your existing space and plumbing.

Frequently Asked Questions

What Is The Typical Lifespan Of A 50-Gallon Gas Water Heater?

A 50-gallon gas water heater typically lasts between 10 to 15 years with proper maintenance. Regular flushing of sediment and checking the anode rod can significantly extend its operational life, ensuring consistent performance.

How Do I Know If My Home Needs A 50-Gallon Gas Water Heater?

A 50-gallon gas water heater is generally suitable for households with 3-4 people. It provides enough hot water for common daily needs like showers and laundry, preventing shortages during peak usage times.

What Is The Difference Between Afue And Energy Factor For Gas Water Heaters?

AFUE (Annual Fuel Utilization Efficiency) is for furnaces, while Energy Factor (EF) or Uniform Energy Factor (UEF) measures a water heater’s overall efficiency. UEF is the newer, more comprehensive standard, indicating how much energy is used to heat water.

Are Power Vent Gas Water Heaters More Efficient Than Standard Ones?

Yes, power vent gas water heaters can be more efficient because they use a fan to expel exhaust, allowing for more flexibility in installation and potentially better heat retention. This fan-assisted venting often leads to higher energy factor ratings.

What Maintenance Is Required For A 50-Gallon Gas Water Heater?

Key maintenance includes flushing the tank annually to remove sediment, which preserves efficiency and tank integrity. Inspecting and replacing the anode rod every few years is also crucial to prevent corrosion and extend the unit’s lifespan.

Final Words

Investing in the best gas water heater 50 gallon ensures consistent hot water availability for your household’s needs. These units offer a reliable and efficient solution for daily tasks, balancing performance with energy-conscious operation. Upgrading to a quality model today provides long-term comfort and peace of mind.