Cheap options fail—but Rinnai REP199iN delivers premium performance.
Choosing the right tankless gas water heater is essential for efficiency and comfort. The Rinnai REP199iN offers impressive flow rates of up to 7.9 GPM, while the Rinnai RX199iN excels in versatility with options for both indoor and outdoor installation.
For those seeking a reliable solution, the Rheem Prestige stands out with its built-in recirculation feature, ensuring instant hot water whenever you need it.
Below, we analyze budget, lifespan, and real-user feedback.



Rinnai REP199iN Tankless Water Heater 199,000 BTU
The Rinnai REP199iN Smart-Circ Non-Condensing Natural Gas Tankless Water Heater is a game-changer for anyone tired of lukewarm showers. With its built-in recirculation pump and Smart-Circ technology, this compact powerhouse ensures you never run out of hot water, even with multiple fixtures running simultaneously. Say goodbye to cold water surprises!
Pros
- Smart-Circ Intelligent Recirculation: Learns your hot water usage patterns for optimal efficiency.
- Compact Size: Fits in tight spaces, about the size of a small suitcase.
- High Output: Provides up to 7.6 GPM, perfect for multiple fixtures running at once.
- Durable Design: Comes with a 15-year guarantee on the heat exchanger, ensuring long-term reliability.
- WiFi Control: Compatible with the Controlr module (sold separately) for remote management.
Cons
- Professional Installation Required: You’ll need to hire a technician, which adds to the overall cost.
- No WiFi Module Included: Be prepared to purchase the Controlr separately for smart features.
- Non-Condensing: While efficient, it may not be as eco-friendly as some condensing models.
Overall, the Rinnai REP199iN is arguably the best tankless gas water heater with a recirculating pump for those seeking convenience and efficiency. Just make sure to call in the pros for installation!
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Rinnai RX199iN Tankless Water Heater
If you’re tired of running out of hot water during your morning shower, the NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater is here to save the day! This compact powerhouse offers up to 11.1 GPM, ensuring you have hot water for multiple fixtures simultaneously. Whether you choose to install it indoors or outdoors, this unit is designed with versatility in mind.
Pros
- Compact Size: Roughly the size of a small suitcase, it fits almost anywhere!
- High Output: With a capacity of up to 11.1 GPM, you can run 7 fixtures at once without breaking a sweat.
- Smart Technology: The Smart Sense gas control system optimizes performance for both natural gas and propane.
- Energy Efficient: With a UEF of .98, this heater is designed to save you money on energy bills.
- Easy Maintenance: The Quick Flush feature simplifies maintenance and keeps your unit running smoothly.
Cons
- Professional Installation Required: You’ll need to hire a technician, which adds to the overall cost.
- WiFi Control Not Included: The Controlr module is sold separately, which may be a bummer for tech enthusiasts.
Overall, the Rinnai RX199iN is a fantastic choice for anyone looking for the best tankless gas water heater that packs a punch in a small package!
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Rheem Prestige Tankless Gas Water Heater
If you’re tired of waiting for hot water and want to save on energy costs, the Rheem Prestige Condensing Tankless Gas Indoor Natural Gas Water Heater with Built-in Recirculation is your new best friend. This powerhouse delivers a whopping 11.0 GPM, ensuring you have hot water when you need it, without the usual waste. It’s compact, efficient, and smart—what more could you ask for?
Pros
- Instant Hot Water: Say goodbye to cold showers! With 11.0 GPM, you’ll have hot water on demand.
- Energy Efficiency: This unit boasts low operating costs and high energy savings, making it a wallet-friendly choice.
- Space-Saving Design: Perfect for replacing bulky tanks, it fits neatly into your home without taking up too much space.
- Smart Features: The auto-learn programming adapts to your hot water needs, ensuring efficiency during peak usage times.
- Safety First: Water and gas leak detection features automatically shut down the unit, giving you peace of mind.
Cons
- Initial Cost: The upfront investment might seem steep, but the long-term savings make it worthwhile.
- Installation Complexity: Requires professional installation, which can add to the overall expense.
Overall, the Rheem Prestige is arguably the best tankless gas water heater with a recirculating pump on the market. It combines efficiency, safety, and convenience in a sleek package. Hot water without the wait—what’s not to love?
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Rheem Tankless Liquid Propane Water Heater
If you’re tired of waiting for hot water or dealing with bulky tanks, the Rheem Prestige Condensing Tankless Indoor Liquid Propane Water Heater is your new best friend. With a remarkable 10.0 GPM flow rate and built-in recirculation, this unit ensures you get hot water on demand without the wait or the waste. Say goodbye to lukewarm showers and hello to efficiency!
Pros
- Instant hot water: No more waiting around; this unit delivers hot water as soon as you need it.
- Energy efficiency: With low operating costs and a high energy efficiency rating, you’ll save on bills while enjoying hot showers.
- Space-saving design: Its compact size makes it perfect for replacing bulky tanks, freeing up valuable space.
- Smart technology: The auto-learn programming adapts to your hot water usage, optimizing performance during peak times.
- Safety features: Water and gas leak detection ensures peace of mind by shutting down the unit if issues arise.
Cons
- Installation complexity: Professional installation may be required, which adds to the initial cost.
- Propane dependency: This model requires liquid propane, so it’s not suitable for all homes.
Overall, the Rheem Prestige is a top contender for the best tankless gas water heater with a recirculating pump. If you value efficiency and convenience, this is definitely worth considering!
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PROZRTED Smart Hot Water Recirculating Pump
If you’re tired of waiting for hot water and want to save on energy bills, the PROZRTED HBS24-12Z Faucet Control Smart Instant Hot Water Recirculating Pump System is your new best friend. This NSF-certified pump promises to deliver instant hot water while being energy efficient. With easy installation and multiple modes, it’s designed to work seamlessly with both tanked and tankless water heaters.
Pros
- NSF Certified: Trustworthy safety and health standards ensure peace of mind.
- Easy Installation: Just place it under the farthest faucet and you’re good to go!
- Energy Saving: Features modes that adapt to your usage, saving you money.
- High Performance: With a flow rate of 6.1 GPM, it delivers hot water in minutes.
- Quiet Operation: Say goodbye to noisy pumps disrupting your tranquility.
Cons
- Remote Control Not Included: You’ll need to purchase this separately for convenience.
- Learning Curve: It may take a bit to understand all the modes and settings.
Overall, the PROZRTED HBS24-12Z is a fantastic investment for anyone looking to enjoy instant hot water without the wait. It’s energy-efficient, user-friendly, and delivers on its promises. Just remember to grab that remote control!
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Faq about best tankless gas water heater with recirculating pump:
1: What is a tankless gas water heater with a recirculating pump?
A tankless gas water heater with a recirculating pump heats water on demand and provides instant hot water throughout the home, reducing wait times.
2: What are the benefits of using a tankless gas water heater?
Benefits include energy efficiency, space-saving design, and a continuous supply of hot water, which can lower utility bills.
3: How does a recirculating pump work?
A recirculating pump moves hot water from the heater to the taps and back, ensuring hot water is readily available whenever needed.
4: Can I install a tankless gas water heater myself?
Installation is complex and requires gas line and plumbing expertise; hiring a professional is recommended for safety and compliance.
5: What size tankless gas water heater do I need?
Size depends on household demand; consider the number of fixtures and peak usage times to select the appropriate model.
6: Are tankless gas water heaters worth the investment?
Yes, they offer long-term savings on energy costs and increased convenience, making them a worthwhile investment for many homeowners.
Conclusion
Among the myriad options for instantaneous hot water solutions, the Rinnai REP199iN stands out with its impressive 199,000 BTU capacity, ensuring rapid heating and efficiency. This model’s advanced recirculating pump technology guarantees an uninterrupted supply of hot water, making it an exemplary choice for larger households.
Conversely, the Rinnai RX199iN offers a commendable balance of performance and energy efficiency, catering to moderate demands while maintaining a compact design. Its innovative features contribute to both convenience and sustainability, establishing it as a reliable option for discerning consumers. Together, these models exemplify excellence in the realm of tankless water heating systems.