Top 10 Best Noritz Natural Gas Water Heaters
for December 2023

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When the colder months roll in, having a trusty natural gas water heater becomes a necessity rather than a luxury. It's a device that promises to deliver warm, comforting baths while saving energy. And when it comes to superior durability, excellent quality, and efficient performance, one brand stands out from the rest, Noritz. With a wide array of top-notch natural gas water heaters, Noritz is indeed a game-changer in the industry.

Among the trove of high-performing units, three Noritz models have successfully stood out and captured the favor of consumers. The Noritz NR50ODNG Outdoor Tankless Water Heater is a compact yet robust option that Cranks up to 120,000 Btuh and an adequate 5.0 GPM flow rate. The Noritz NR66ODNG Outdoor Tankless Water Heater takes efficiency a notch higher with a maximum of 140,000 Btuh and a commendable 6.6 GPM flow capacity. For indoor use, the Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater provides consistent 6.6 GPM performance. Each of these water heaters promise exceptional durability, energy-efficiency, and reliable functionality, sure to justify your investment.

However, the party doesn't stop there. Be sure to check out the entire list to see more fantastic selections, particularly the Noritz NRC111-DV NG Condensing Tankless Water Heater, waiting gratifyingly at the end of the list. This gas water heater gives an impressive heat output at 8.4 GPM. So, whether you're planning a simple upgrade to your water heating system, or you're out for the best that the heating world has to offer, there's no place better to kickstart your search than right here! Happy shopping!


We have chosen the Noritz Outdoor Tankless Water Heater as our second pick mainly due to its top-notch efficiency. This heater, fueled by natural gas, flaunts a maximum output of 120,000 Btuh, transforming your experience of using hot water at home. You'll be treated with endless hot water thanks to Noritz's advanced technology. With no fear of running out of supply in the middle of your shower, your peaceful mornings are guaranteed.

Furthermore, this heater operates with low Nox emissions which means it keeps your environmental footprint remarkably low. Importantly, the outdoor placement of this heater saves you the precious indoor space, making it even more desirable for those of you living in compact spaces. Encapsulating efficiency, environment-friendliness, and space optimization, this product is definitely worth your consideration.


In our list, the Noritz Outdoor Tankless Water Heater secured the third spot due to its powerful performances and outstanding features. With a maximum thermal efficiency of 140,000 Btuh, it impresses with its power, but it's the 6.6 Gpm flow rate which allows this tankless water heater to stand out. You will never have to worry about running out of hot water again, as this model offers endless hot water supply.

Moreover, it operates on natural gas, meaning it's efficient and eco-friendly. Engineered to follow the Low NOx regulations, it significantly reduces emissions, promoting a healthier environment. Harnessing a high UEF 0.81 efficiency rate, this model ensures you get the maximum utility out of every single watt of power it uses. You can rest assured knowing your usage of hot water will now be more efficient and greener with the Noritz Outdoor Tankless Water Heater.


We are thoroughly impressed by the Noritz NRC66DVNG Indoor Condensing Direct Tankless Water Heater. What sets this heater apart, and indeed what we loved most about it, is its compact design that ensures it fits in your home perfectly. The heater runs on natural gas, and its 6.6 GPM ensures an endless supply of heated water. The heater's high efficiency adds to your utility savings while its low NOx emissions guarantee it is environmentally friendly.

Compared to the Noritz NR66ODNG, the NRC66DVNG model has a slight edge thanks to its condensing technology. This feature makes it significantly more energy-efficient. Another advantage is its capability to be vented with Schedule 40 PVC pipe and fitting, providing even more installation options.

This model would be particularly useful for individuals living in small spaces, such as apartments or tiny homes, where space is at a premium, but a reliable hot water supply is essential. Its versatile venting features also make it an excellent choice for those seeking a more sustainable and eco-conscious lifestyle.


The Nortiz Indoor Condensing Direct Vent Tankless Water Heater quickly caught the attention of our smart algorithms with its endless hot water function. This feature is not only impressive but a game changer in the tankless water heater sector. The water heater provides hot water consistently without break, which ensures comfort and satisfaction during usage.

Considering its high efficiency, this is a great option for those with large families or homeowners who frequently entertain guests. With a 7.1 GPM flow rate, you can run multiple appliances simultaneously, and thanks to its low Nox emissions, it's also more environmentally friendly. The NRC71DVNG model is specifically powered by natural gas, which helps cut down utility costs. So, if you are looking for a reliable, cost-effective, and environmentally friendly tankless water heater, this is the product for you.


Our smart algorithms highlighted the Noritz Outdoor Condensing Tankless Water Heater as a standout for those in search of efficient home solutions. What caught our attention was the endless hot water supply and its very high efficiency. Imagine never running out of hot water again, even with multiple showers running. The heater's low Nox is another bonus as it reduces harmful gas emissions, making it friendly for your home and the environment.

This water heater is ideal for large families or shared homes where hot water demand is high. Hence, we believe this product will be the most beneficial for large households with multiple bathrooms that have regular high demand for heated water. Its outdoor mounting adds to the space-saving advantage, freeing up your indoor spaces. The convenience of a high-efficiency, low-emission solution added it to our catalog. Enjoy the luxury of a hot shower anytime, guilt-free.


Our top pick is the Noritz Indoor Concentric Vent Hot Water Heater. What stands out the most is its powerful max 180,000 Btuh heat exchanger. It's interesting to our smart algorithms because it's made with commercial grade copper, promising 25% thicker piping than standard models. You'll enjoy up to 8.3 gallons per minute of endless hot water. Another feature we must highlight is the ability to link two units with a QC-2, Quick Connect Cord.

It's not just its strength that impressed us, but also its versatility. The beige color blends easily with any home decor. This product will be most useful for those who require a durable and efficient solution for an endless supply of hot water. So, if you're tired of running out of hot water in the middle of a shower, or if you're a homeowner who values quality, this could be yours.

Rheem Prestige Condensing Tankless Outdoor Natural Gas Water Heater 9.5 GPM - RTGH-95XLN-2

Noritz Natural Gas Water Heater - Rheem Prestige Outdoor, 9.5 GPM, RTGH-95XLN-2. Efficient and reliable

by Rheem

Space Savings - Compact, space-saving design. Perfect for a tank replacement.

One feature that caught our attention was the freeze protection offered by the Rheem Prestige tankless water heater. Incredibly valuable in colder climates, this feature ensures that your water heater will continue functioning optimally even in temperatures as low as -30 degrees.

Setting it apart from the previously tested Noritz NR83DVCNG water heater, the Rheem Prestige boasts a 9.5 GPM flow rate. This means it can deliver more hot water quickly, an advantage for larger households or those with higher water requirements. On the flip side, if your water demand is relatively low, the edge the Rheem Prestige has in this aspect might not significantly impact your usage experience.

Most importantly, this model incorporates Water & Gas Leak Detection technology. This critical feature can automatically shut the unit down and provide an error code during a leak, providing a level of safety and peace of mind.

If you're someone who values both high performance and safety features in a water heater, we would strongly recommend considering the Rheem Prestige. Especially, it will be ideal for large households located in colder regions.

FOGATTI Natural Gas Tankless Water Heater, Indoor 6.3 GPM, 145,000 BTU White Instant Hot Water Heater, InstaGas Comfort 145 Series

Noritz Natural Gas Tankless Water Heater, Indoor 6.3 GPM, Energy-efficient Instant Hot Water


Using built in forced exhaust fan at the bottom ensures stable combustion and eliminates the influence of external wind. Compact design for easy installation.

Our top pick, the Fogatti Tankless Water Heater captured our interest due to its sleek tankless design that allows for instant hot water. Imagine having the luxury of not waiting 30 minutes for preheating, this is what this unique heater offers. With its impressive 145,000 BTU high heating capacity and a maximum flow rate of 6.3 GPM, it's perfect for households with 2-3 outlet points.

The Fogatti has been adopted with the world's most advanced technology, offering you superior safety and durability. This device will be most suitable for medium-sized families seeking instant and endless hot water. The high energy conversion rate (UEF over 0.81) ensures minimal energy loss, you'd marvel at the savings on your energy bills!


Our smart algorithms fell in love with the Noritz NRC111-DV NG Condensing Tankless Water Heater for its exceptional efficiency level of 93%. Most units don't come close to that figure! Such high efficiency reveals that it's a significant game-changer in the realm of energy savings. So, we couldn't resist adding it to our top picks.

Moreover, smart onboard self-diagnostic computer systems maintain the unit optimal performance. Your peace of mind is also ensured with a reassuring 199,900 BTU and eye-catching .05 GPM activation flow rate. It's a beautiful fusion of stainless steel and copper heat exchangers, ensuring durability and longevity. We believe this is perfect for the environment-conscious homeowner focused on long-term efficiency and eco-friendliness.


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