Rinnai RE180EN 180,000 BTU Outdoor Non-Condensing Natural Gas Tankless Water Heater

Rinnai RE180EN Outdoor Natural Gas Tankless Water Heater (180,000 BTU)

The Rinnai RE180EN is a high-performance outdoor non-condensing tankless water heater designed for reliable, on-demand hot water using natural gas. With a powerful 180,000 BTU (180 MBH) input, this unit is ideal for residential applications requiring consistent hot water without the need for indoor installation or complex venting.

Key features

• Outdoor-rated installation eliminates the need for indoor venting.
• Natural gas operation with strong residential output.
• 180,000 BTU (180 MBH) maximum input.
• Non-condensing design for straightforward operation and maintenance.
• Compact tankless design delivers hot water only when needed.

Specifications

• Model: RE180EN
• Fuel type: Natural Gas (NG)
• Installation location: Outdoor
• Type: Non-Condensing Tankless Water Heater
• Max input: 180,000 BTU (180 MBH)

Ideal applications

• Residential homes with higher hot water demand
• Outdoor tankless replacements
• Homes needing multiple fixtures running simultaneously

Before purchasing

• Confirm gas supply sizing and outdoor installation clearance requirements.
• Performance depends on incoming water temperature and simultaneous fixture usage.
• Professional installation is strongly recommended.

Need help choosing the right size? Contact us with your location, fixture count, and usage needs and we’ll help you confirm fit.