Rinnai RE Series 8.5 GPM Indoor NCTWH - NG - Replaces V75IN
The Rinnai RE Series 8.5 GPM Indoor NCTWH - NG is a high-capacity, natural gas-powered tankless water heater designed for indoor installation. It can deliver up to 8.5 gallons of hot water per minute, making it well-suited for large households or use in commercial settings where high demand for hot water is expected. This model is designed to replace the Rinnai V75IN water heater.
This water heater is equipped with advanced features, such as a digital temperature control panel, which allows you to adjust the hot water temperature to your desired setting. It also has a built-in recirculation pump, which helps to reduce wait time for hot water at fixtures and reduces water waste.
The RE Series 8.5 GPM Indoor NCTWH - NG is energy efficient, with a high energy factor of .82, and meets the Energy Star qualifications for energy efficiency. It is also equipped with a built-in freeze protection system, which helps to prevent damage to the unit in cold weather.
Overall, the Rinnai RE Series 8.5 GPM Indoor NCTWH - NG is a reliable and efficient choice for homeowners or businesses who need a high-capacity tankless water heater that can deliver a consistent supply of hot water on demand and who prefer an indoor installation.
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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180,000 BTUs
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Hot Water Capacity Range: 0.13 GPM to 8.5 GPM
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0.82 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 |
180 |
| Vent Type |
Non-Condensing |
What Our Experts Think
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8.5 GPM Flow Rate: Supports medium to large homes with multiple fixtures running simultaneously.
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Natural Gas Powered: Provides efficient and reliable hot water with reduced energy costs.
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Indoor Installation: Compact design saves space and integrates easily into indoor utility areas.
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On-Demand Tankless Heating: Delivers continuous hot water while minimizing standby energy loss.
Q&A
Q: What model does this replace?
A: It replaces the Rinnai V75IN indoor tankless water heater.
Q: Is this suitable for high-demand households?
A: Yes — the 8.5 GPM flow rate accommodates multiple appliances and showers at the same time.
Q: Does it require venting?
A: Yes, proper indoor venting is required for safe operation.
Maintenance Tips
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Flush the unit annually to remove scale buildup.
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Inspect water and gas connections regularly for leaks.
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Clean venting components to ensure proper airflow.
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Follow manufacturer service guidelines for long-term reliability.
