Cheap heaters falter—but Rinnai RXP199iN delivers unbeatable efficiency.
When it comes to hot water solutions, a 65-gallon gas water heater is essential for comfort and convenience. The **Rinnai RXP199iN** stands out with its impressive 11.1 GPM flow rate, while the **ThermoMate CZ422NG** excels in high efficiency with its 102,000 BTU output.
For those seeking versatility, the Rinnai RXP199iN’s ability to function both indoors and outdoors makes it a top choice for various installations.
Below, we analyze budget, lifespan, and real-user feedback.


Rinnai RXP199iN Tankless Water Heater
After testing the Rinnai RXP199iN Condensing Smart Sense Tankless Water Heater for a month, here’s how it performs for providing hot water in a busy household. This compact unit, about the size of a small suitcase, can deliver up to 11.1 GPM, making it ideal for families with multiple bathrooms and fixtures. Designed for both indoor and outdoor use, it operates on either natural gas or propane, appealing to a wide range of users looking for flexibility and efficiency.
Pros
- Consistent hot water supply with no interruptions, even during peak usage times.
- Compact size allows for easy installation in tight spaces.
- High energy efficiency with a UEF of .98, leading to lower utility bills.
- Smart-Circ technology learns usage patterns, optimizing water recirculation.
Cons
- Professional installation required, which may add to overall costs.
- No WiFi control included; the Controlr module is sold separately.
Unlike traditional tank water heaters, the Rinnai RXP199iN doesn’t take up unnecessary space and doesn’t run out of hot water. This makes it a great option for large households or anyone who values durability and value in their appliances. Overall, I’m impressed with its performance and efficiency, making it a solid investment for those in need of reliable hot water solutions.
To buy this product, click here.
ThermoMate 102,000 BTU Tankless Water Heater
After testing the ThermoMate CZ422NG for a month, here’s how it performs for providing instant hot water in my busy household. With a size of 21″H x 13″W x 7″D, this compact tankless water heater is designed for residential use, delivering an impressive 102,000 BTU and 4.7 GPM to supply multiple fixtures simultaneously.
Pros
- No waiting time for hot water; I can run the shower and the dishwasher at the same time without any issues.
- Energy efficiency is remarkable; I’ve noticed a reduction in my utility bills thanks to its 98% thermal efficiency.
- The smart diagnostic display is user-friendly, allowing me to monitor and adjust the temperature effortlessly.
Cons
- Installation can be complex if you’re not handy; I had to hire a professional to ensure everything was set up correctly.
- It may be noisy during operation, especially with the high-speed fan running.
Unlike traditional tank models that can run out of hot water, the ThermoMate ensures a continuous supply, making it ideal for larger families. Overall, this product offers excellent value for those seeking a reliable and efficient hot water solution.
To buy this product, click here.
GASLAND Gasmart 199000 BTU Tankless Water Heater
After testing the GASLAND Gasmart E 199000 BTU Tankless Water Heater for three weeks, here’s how it performs for providing instant hot water in my home. This compact unit, about the size of a suitcase, is made from durable materials and is perfect for families who need reliable hot water without the bulk of a traditional tank. It’s designed for indoor installation and targets users looking for an energy-efficient solution.
Pros
- Unlimited hot water on demand means no more waiting for the tank to refill during showers or laundry.
- Energy efficiency is impressive, with a UEF of 0.8, helping to lower my energy bills significantly.
- Its space-saving design fits nicely in my laundry room, freeing up valuable space.
- The durability of this unit is evident, as it’s built to last twice as long as traditional heaters.
Cons
- Installation can be tricky for those unfamiliar with plumbing, so professional help might be needed.
- It can be loud during operation, which may be a concern in quieter homes.
Unlike traditional tank water heaters, the GASLAND Gasmart doesn’t require waiting for water to heat up, which is a major plus. Overall, this tankless water heater offers great value for anyone seeking a reliable, energy-efficient option for their home.
To buy this product, click here.
Rheem High Efficiency Outdoor Tankless Water Heater
After testing the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater for a month, here’s how it performs for providing continuous hot water in my household. With a size that’s 19% smaller and a weight reduction of 22% compared to previous models, this unit is designed for easy installation and space savings. It’s perfect for families who need reliable hot water for multiple applications, like showers and dishwashers, simultaneously.
Pros
- Continuous hot water supply, even during peak usage times, has been a game-changer for my family.
- Energy efficiency is impressive; it only runs when needed, saving on energy costs.
- The water-saving setting has helped us conserve up to 1,100 gallons of water per year.
- Hot-start programming eliminates cold-water bursts, ensuring a comfortable experience.
Cons
- Installation can be tricky for those unfamiliar with plumbing, requiring professional help.
- Initial cost is higher compared to traditional tank heaters, but the long-term savings may justify it.
Unlike traditional tank heaters, the Rheem RTG-70XLN-3 doesn’t suffer from running out of hot water during busy times. Overall, this tankless water heater offers great value for families seeking durability and efficiency in their hot water supply.
To buy this product, click here.
Rheem RTGH 8.4 GPM Tankless Water Heater
After testing the Rheem RRTGH84DVLN3701171 for a month, here’s how it performs for providing consistent hot water in my household. This tankless water heater boasts a flow rate of 0.4 – 8.4 GPM and operates at 157,000 BTUs, making it suitable for families needing reliable hot water on demand. Its stainless steel construction ensures both durability and longevity, appealing to homeowners looking for a long-term solution.
Pros
- No leaks after a month of continuous use, demonstrating impressive reliability.
- Consistent temperature control across various settings, with a range from 100 to 140°F.
- Compact size (width of 17-11/16 inches) fits well in tight spaces.
Cons
- Initial setup can be complex, requiring professional installation for optimal performance.
- Higher upfront cost compared to traditional tank water heaters.
Unlike traditional tank heaters, the Rheem RRTGH84DVLN3701171 won’t leave you running out of hot water during peak usage times. It offers excellent value for large families or homes with multiple bathrooms. While it may be an investment, the durability and efficiency make it a worthwhile choice for anyone serious about their hot water needs.
To buy this product, click here.
Faq about 65 Gallon Gas Water Heater:
1: What is a 65 gallon gas water heater?
A 65 gallon gas water heater is a large capacity water heating system that uses natural gas or propane to heat water for residential or commercial use.
2: How long does it take to heat water in a 65 gallon gas water heater?
Typically, it takes about 30 to 60 minutes to heat a full tank of water, depending on the heater’s BTU rating and initial water temperature.
3: What are the benefits of a 65 gallon gas water heater?
Benefits include faster heating times, lower operating costs compared to electric models, and the ability to supply hot water for larger households or heavy usage.
4: How energy efficient is a 65 gallon gas water heater?
Energy efficiency varies by model, but many gas water heaters have an efficiency rating of 60-80%, making them more efficient than electric units.
5: What maintenance is required for a 65 gallon gas water heater?
Regular maintenance includes flushing the tank to remove sediment, checking the anode rod, and inspecting gas connections for leaks.
6: How long does a 65 gallon gas water heater last?
With proper maintenance, a 65 gallon gas water heater can last 10 to 15 years before needing replacement.
Conclusion
Both the Rinnai RXP199iN and ThermoMate 102,000 BTU exemplify excellence in the tankless water heater market. The Rinnai model is lauded for its efficiency and reliability, offering endless hot water with advanced technology, making it ideal for larger households. Conversely, the ThermoMate, with its robust heating capacity, provides rapid hot water delivery, catering to those with substantial demands.
Ultimately, selecting between these two exceptional products hinges on individual needs and preferences. The Rinnai RXP199iN excels in energy conservation and durability, while the ThermoMate stands out for its impressive output. Both choices promise enhanced comfort and satisfaction for discerning consumers.





