Rinnai RE Series 5.3 GPM Indoor NCTWH - NG
The Rinnai RE Series 5.3 GPM Indoor NCTWH - NG is a high-efficiency, natural gas-powered tankless water heater. It is designed for use in residential and commercial settings and provides a continuous hot water supply on demand.
The RE Series 5.3 GPM model has a maximum flow rate of 5.3 gallons per minute, making it suitable for households with moderate to high hot water demand. It features a durable stainless steel heat exchanger and a condensing design, which helps to improve its overall efficiency and reduce energy costs.
The unit has a digital control panel that allows for easy temperature control and monitoring of the water heater's performance. It also has various safety features, including a freeze protection system, overheats protection and a leak detection system.
The Rinnai RE Series 5.3 GPM Indoor NCTWH - NG is designed for indoor installation and can be mounted on a wall or floor. It requires a natural gas fuel source and a dedicated venting system. It is available in liquid propane (LP) and natural gas models.
Features
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Clean Internal Layout
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LED Screen
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Safety Handle and Seating Bracket
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Easy Open / Close Access
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Programmable Service Reminders
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Compact Copper Heat Exchanger
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Optional Leak Detection Kit
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Optional Freeze Protection
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Optional Mounting Bracket (Sold Separately)
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140,000 BTUs
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Hot Water Capacity Range: 0.26 GPM to 5.3 GPM
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0.81 Uniform Energy Factor
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Dimensions: 14.05" x 22.87" x 10.77"
Specification
| Fuel Type |
Natural Gas |
| Color/Finish |
Silver |
| Indoor/Outdoor |
Indoor |
| Size |
140 |
| Vent Type |
Non-Condensing |
What Our Experts Think
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Efficient Tankless Design: Provides continuous hot water on demand while reducing energy consumption.
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5.3 GPM Flow Rate: Ideal for smaller homes or apartments with multiple hot water fixtures.
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Natural Gas Powered: Delivers reliable, cost-effective performance.
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Compact Indoor Installation: Space-saving unit fits easily into utility closets or tight indoor areas.
Q&A
Q: What is the maximum flow rate of this model?
A: It delivers up to 5.3 gallons per minute, suitable for small to medium residential applications.
Q: Is this unit designed for indoor use?
A: Yes — it is intended for indoor installation and requires proper venting.
Q: Is it energy efficient?
A: Yes, the on-demand tankless system helps reduce energy waste compared to traditional water heaters.
Maintenance Tips
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Flush the unit annually to prevent scale and mineral buildup.
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Inspect water and gas connections regularly for leaks.
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Clean or replace venting components as needed to maintain airflow.
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Follow manufacturer’s recommended servicing schedule for long-term performance.
