Rinnai RE180iN 180,000 BTU Indoor Non-Condensing Natural Gas Tankless Water Heater

Rinnai RE180iN Indoor Natural Gas Tankless Water Heater (180,000 BTU)

The Rinnai RE180iN is a powerful indoor non-condensing tankless water heater designed to deliver consistent, on-demand hot water using natural gas. With a robust 180,000 BTU (180 MBH) input, this unit is ideal for residential applications with higher hot water demand.

Key features

• Indoor installation for protected placement and clean appearance.
• Natural gas operation with reliable tankless performance.
• 180,000 BTU (180 MBH) maximum input.
• Non-condensing design for straightforward operation and service.
• Compact footprint compared to traditional tank water heaters.

Specifications

• Model: RE180iN
• Fuel type: Natural Gas (NG)
• Installation location: Indoor
• Type: Non-Condensing Tankless Water Heater
• Max input: 180,000 BTU (180 MBH)

Ideal applications

• Residential homes with multiple fixtures
• Replacing indoor tank-style water heaters
• Homes requiring higher continuous hot water output

Before purchasing

• Verify gas line sizing and indoor venting requirements.
• Hot water performance depends on incoming water temperature and usage.
• Professional installation is strongly recommended.

Need help choosing the right model? Contact us with your home size, fixture count, and location and we’ll help confirm proper sizing.